Dr. Patrick Hammen is a highly accomplished surgeon specializing in colon and rectal surgery. He offers expert care for patients aged 18 and older. He earned his medical degree from Mercer University in Macon, Georgia, and completed his residency at Memorial Health University Medical Center in Savannah, Georgia. Following this, he pursued advanced training with a fellowship at the University of Texas Health Science Center.
Dr. Hammen holds dual board certifications in General Surgery from the American Board of Surgery and in Colon and Rectal Surgery from the American Board of Colon and Rectal Surgery. He is a distinguished Fellow of both the American College of Surgeons and the American Society of Colon and Rectal Surgeons.
Dr. Hammen brings decades of expertise to his practice, focusing on the diagnosis and treatment of colorectal conditions. His areas of specialization include:
Benign anorectal disorders
Inflammatory bowel disease
Colorectal cancer screening and treatment
The surgical management of diverticulitis
Dedicated to delivering compassionate and cutting-edge care, Dr. Hammen is committed to improving his patients' health and quality of life.
In his spare time, Dr. Hammen enjoys reading and spending time with family.
Dr. Hammen welcomes new patients and accepts most insurance plans.
Specialties
Colon and Rectal Surgery
Education & Training
Mercer University
Degree
Doctor of Medicine
Residency
Memorial Medical Center
Fellowship
University of Texas Health Science Center
Certifications
American Board of Colon & Rectal Surgery
Hospital Affiliations
Wellstar Cobb Hospital
Wellstar Kennestone Hospital
Languages spoken
English
Patient Reviews
Overall patient rating
4.8
Based on 171 patient ratings
I'd recommend this provider to family and friends
I'd recommend this practice to family and friends
Listened to me carefully
Shared the right amount of information
Earned my trust
All reviews have been submitted by patients after seeing the provider.For more information about the review system, check out this Learn more about our review system.
Patient Reviews
5
Really like and trust Dr Hammen. He explains everything clearly and easily understood. Office staff is great too!!
October 17, 2026
5
Dr. Hammen was very thorough and kind and patient and listened and answered all questions and made me feel at ease. And did not rush me. Made me feel very comfortable.
October 10, 2026
5
Excellent care from this office.
September 19, 2026
5
Dr Hammen is very nice & completely thorough in explaining everything to me. In addition, he answered all of my questions.
September 11, 2026
5
The doctor and nurses where very polite and helpful
August 30, 2026
5
I was delighted with how the team was professional, thorouh and friendly. The provider listened and patiently answered my questions.
August 21, 2026
5
Dr Hammen and his staff are the very best!
August 14, 2026
5
Dr. Hammen was very informative and very charismatic and he listened to everything I had to say. Very informative and I really appreciate the time he took to actually see me.
August 16, 2026
5
excellent
August 14, 2026
5
Dr. Hammen and his staff are amazing. In a difficult colon situation, they really do care. They listen to you and make you feel comfortable.
August 12, 2026
5
From the young lady that checked me in, to the medical assistant Desi to Dr. Hammen. Everyone was awesome!!
July 24, 2026
5
The entire experience was professional, positive and attentive.
July 18, 2026
5
very caring and patient and knowledgeable not only the doctor but the staff as well appointment was on time and i was not rushed facilities were comfortable and clean
July 4, 2026
5
Yes, from the beginning of the receptionist check-in to the various, I was extremely impressed, and everybody was so nice and professional. And I love Dr. Patrick all my visits. This is my first time having this experience with me with him, and he is everything that he is supposed to be for his skills. And I'm grateful to have him. So thank you so much.
July 5, 2026
5
Only critique i would say is the friendliness of the lady at the rear check out across from the nurse's station. I didn't get her name, but she was kind of rude, a little argumentative especially, when I ask for a work excuse. She also cut me off when I tried to explain what the doctor said to me about scheduling. Other than that, everyone with the exception of her was excellent!
July 3, 2026
5
They always treat me really well every time I come
June 27, 2026
5
Dr. Hammen was amazing!! The staff was friendly and courteous!!
June 26, 2026
5
I felt appreciated and comfortable at my appointment. Dr. Hammen was most efficient with details.
June 19, 2026
5
Very professional
June 16, 2026
5
Staff is amazing! Answered questions and eased my anxiety and concerns.
June 14, 2026
5
The staff were very friendly and courteous. I felt comfortable in the office.
June 5, 2026
5
My experience was pleasant and everyone was professional, and helpful.
May 30, 2026
5
I read good things about Dr. Hammen, and though it was a long drive for me to see him, I'm very glad that I did. Trusted him completely upon meeting him and found my consultation to be highly educational, not rushed, and came away with a strong game plan that resorted to surgery as a last option. That's saying something coming from a surgeon. Came away highly impressed and feeling good about my treatment plan.
May 30, 2026
5
Thank you!
May 30, 2026
5
Everyone was extremely nice and helpful
May 30, 2026
5
Dr Hammen and staff are the best
May 16, 2026
5
Dr. Hammen was warm and friendly. He explained everything that I needed to know about my problem. I trust him to do my surgery.
May 9, 2026
5
Dr Hammond has taken great care of me and I've recommended him to all my friends. Thank you Dr
May 2, 2026
5
Dr hammen is great and the nurse ,receptionist all Exellent thanks
April 10, 2026
5
Very nice staff makes you feel rite at home
April 3, 2026
5
Really like and trust Dr Hammen. He explains everything clearly and easily understood. Office staff is great too!!
October 17, 2026
5
Dr. Hammen was very thorough and kind and patient and listened and answered all questions and made me feel at ease. And did not rush me. Made me feel very comfortable.
October 10, 2026
5
Excellent care from this office.
September 19, 2026
5
Dr Hammen is very nice & completely thorough in explaining everything to me. In addition, he answered all of my questions.
September 11, 2026
5
The doctor and nurses where very polite and helpful
August 30, 2026
5
I was delighted with how the team was professional, thorouh and friendly. The provider listened and patiently answered my questions.
August 21, 2026
5
Dr Hammen and his staff are the very best!
August 14, 2026
5
Dr. Hammen was very informative and very charismatic and he listened to everything I had to say. Very informative and I really appreciate the time he took to actually see me.
August 16, 2026
5
excellent
August 14, 2026
5
Dr. Hammen and his staff are amazing. In a difficult colon situation, they really do care. They listen to you and make you feel comfortable.
August 12, 2026
5
From the young lady that checked me in, to the medical assistant Desi to Dr. Hammen. Everyone was awesome!!
July 24, 2026
5
The entire experience was professional, positive and attentive.
July 18, 2026
5
very caring and patient and knowledgeable not only the doctor but the staff as well appointment was on time and i was not rushed facilities were comfortable and clean
July 4, 2026
5
Yes, from the beginning of the receptionist check-in to the various, I was extremely impressed, and everybody was so nice and professional. And I love Dr. Patrick all my visits. This is my first time having this experience with me with him, and he is everything that he is supposed to be for his skills. And I'm grateful to have him. So thank you so much.
July 5, 2026
5
Only critique i would say is the friendliness of the lady at the rear check out across from the nurse's station. I didn't get her name, but she was kind of rude, a little argumentative especially, when I ask for a work excuse. She also cut me off when I tried to explain what the doctor said to me about scheduling. Other than that, everyone with the exception of her was excellent!
July 3, 2026
5
They always treat me really well every time I come
June 27, 2026
5
Dr. Hammen was amazing!! The staff was friendly and courteous!!
June 26, 2026
5
I felt appreciated and comfortable at my appointment. Dr. Hammen was most efficient with details.
June 19, 2026
5
Very professional
June 16, 2026
5
Staff is amazing! Answered questions and eased my anxiety and concerns.
June 14, 2026
5
The staff were very friendly and courteous. I felt comfortable in the office.
June 5, 2026
5
My experience was pleasant and everyone was professional, and helpful.
May 30, 2026
5
I read good things about Dr. Hammen, and though it was a long drive for me to see him, I'm very glad that I did. Trusted him completely upon meeting him and found my consultation to be highly educational, not rushed, and came away with a strong game plan that resorted to surgery as a last option. That's saying something coming from a surgeon. Came away highly impressed and feeling good about my treatment plan.
May 30, 2026
5
Thank you!
May 30, 2026
5
Everyone was extremely nice and helpful
May 30, 2026
5
Dr Hammen and staff are the best
May 16, 2026
5
Dr. Hammen was warm and friendly. He explained everything that I needed to know about my problem. I trust him to do my surgery.
May 9, 2026
5
Dr Hammond has taken great care of me and I've recommended him to all my friends. Thank you Dr
May 2, 2026
5
Dr hammen is great and the nurse ,receptionist all Exellent thanks
April 10, 2026
5
Very nice staff makes you feel rite at home
April 3, 2026
5
Really like and trust Dr Hammen. He explains everything clearly and easily understood. Office staff is great too!!
October 17, 2026
5
Dr. Hammen was very thorough and kind and patient and listened and answered all questions and made me feel at ease. And did not rush me. Made me feel very comfortable.
October 10, 2026
5
Excellent care from this office.
September 19, 2026
5
Dr Hammen is very nice & completely thorough in explaining everything to me. In addition, he answered all of my questions.
September 11, 2026
5
The doctor and nurses where very polite and helpful
August 30, 2026
5
I was delighted with how the team was professional, thorouh and friendly. The provider listened and patiently answered my questions.
August 21, 2026
5
Dr Hammen and his staff are the very best!
August 14, 2026
5
Dr. Hammen was very informative and very charismatic and he listened to everything I had to say. Very informative and I really appreciate the time he took to actually see me.
August 16, 2026
5
excellent
August 14, 2026
5
Dr. Hammen and his staff are amazing. In a difficult colon situation, they really do care. They listen to you and make you feel comfortable.
August 12, 2026
5
From the young lady that checked me in, to the medical assistant Desi to Dr. Hammen. Everyone was awesome!!
July 24, 2026
5
The entire experience was professional, positive and attentive.
July 18, 2026
5
very caring and patient and knowledgeable not only the doctor but the staff as well appointment was on time and i was not rushed facilities were comfortable and clean
July 4, 2026
5
Yes, from the beginning of the receptionist check-in to the various, I was extremely impressed, and everybody was so nice and professional. And I love Dr. Patrick all my visits. This is my first time having this experience with me with him, and he is everything that he is supposed to be for his skills. And I'm grateful to have him. So thank you so much.
July 5, 2026
5
Only critique i would say is the friendliness of the lady at the rear check out across from the nurse's station. I didn't get her name, but she was kind of rude, a little argumentative especially, when I ask for a work excuse. She also cut me off when I tried to explain what the doctor said to me about scheduling. Other than that, everyone with the exception of her was excellent!
July 3, 2026
5
They always treat me really well every time I come
June 27, 2026
5
Dr. Hammen was amazing!! The staff was friendly and courteous!!
June 26, 2026
5
I felt appreciated and comfortable at my appointment. Dr. Hammen was most efficient with details.
June 19, 2026
5
Very professional
June 16, 2026
5
Staff is amazing! Answered questions and eased my anxiety and concerns.
June 14, 2026
5
The staff were very friendly and courteous. I felt comfortable in the office.
June 5, 2026
5
My experience was pleasant and everyone was professional, and helpful.
May 30, 2026
5
I read good things about Dr. Hammen, and though it was a long drive for me to see him, I'm very glad that I did. Trusted him completely upon meeting him and found my consultation to be highly educational, not rushed, and came away with a strong game plan that resorted to surgery as a last option. That's saying something coming from a surgeon. Came away highly impressed and feeling good about my treatment plan.
May 30, 2026
5
Thank you!
May 30, 2026
5
Everyone was extremely nice and helpful
May 30, 2026
5
Dr Hammen and staff are the best
May 16, 2026
5
Dr. Hammen was warm and friendly. He explained everything that I needed to know about my problem. I trust him to do my surgery.
May 9, 2026
5
Dr Hammond has taken great care of me and I've recommended him to all my friends. Thank you Dr
May 2, 2026
5
Dr hammen is great and the nurse ,receptionist all Exellent thanks
April 10, 2026
5
Very nice staff makes you feel rite at home
April 3, 2026
5
Really like and trust Dr Hammen. He explains everything clearly and easily understood. Office staff is great too!!
October 17, 2026
5
Dr. Hammen was very thorough and kind and patient and listened and answered all questions and made me feel at ease. And did not rush me. Made me feel very comfortable.
October 10, 2026
5
Excellent care from this office.
September 19, 2026
5
Dr Hammen is very nice & completely thorough in explaining everything to me. In addition, he answered all of my questions.
September 11, 2026
5
The doctor and nurses where very polite and helpful
August 30, 2026
5
I was delighted with how the team was professional, thorouh and friendly. The provider listened and patiently answered my questions.
August 21, 2026
5
Dr. Hammen was very informative and very charismatic and he listened to everything I had to say. Very informative and I really appreciate the time he took to actually see me.
August 16, 2026
5
Dr Hammen and his staff are the very best!
August 14, 2026
5
excellent
August 14, 2026
5
Dr. Hammen and his staff are amazing. In a difficult colon situation, they really do care. They listen to you and make you feel comfortable.
August 12, 2026
5
From the young lady that checked me in, to the medical assistant Desi to Dr. Hammen. Everyone was awesome!!
July 24, 2026
5
The entire experience was professional, positive and attentive.
July 18, 2026
5
Yes, from the beginning of the receptionist check-in to the various, I was extremely impressed, and everybody was so nice and professional. And I love Dr. Patrick all my visits. This is my first time having this experience with me with him, and he is everything that he is supposed to be for his skills. And I'm grateful to have him. So thank you so much.
July 5, 2026
5
very caring and patient and knowledgeable not only the doctor but the staff as well appointment was on time and i was not rushed facilities were comfortable and clean
July 4, 2026
5
Only critique i would say is the friendliness of the lady at the rear check out across from the nurse's station. I didn't get her name, but she was kind of rude, a little argumentative especially, when I ask for a work excuse. She also cut me off when I tried to explain what the doctor said to me about scheduling. Other than that, everyone with the exception of her was excellent!
July 3, 2026
5
They always treat me really well every time I come
June 27, 2026
5
Dr. Hammen was amazing!! The staff was friendly and courteous!!
June 26, 2026
5
I felt appreciated and comfortable at my appointment. Dr. Hammen was most efficient with details.
June 19, 2026
5
Very professional
June 16, 2026
5
Staff is amazing! Answered questions and eased my anxiety and concerns.
June 14, 2026
5
The staff were very friendly and courteous. I felt comfortable in the office.
June 5, 2026
5
I read good things about Dr. Hammen, and though it was a long drive for me to see him, I'm very glad that I did. Trusted him completely upon meeting him and found my consultation to be highly educational, not rushed, and came away with a strong game plan that resorted to surgery as a last option. That's saying something coming from a surgeon. Came away highly impressed and feeling good about my treatment plan.
May 30, 2026
5
Thank you!
May 30, 2026
5
My experience was pleasant and everyone was professional, and helpful.
May 30, 2026
5
Everyone was extremely nice and helpful
May 30, 2026
5
Dr Hammen and staff are the best
May 16, 2026
5
Dr. Hammen was warm and friendly. He explained everything that I needed to know about my problem. I trust him to do my surgery.
May 9, 2026
5
Dr Hammond has taken great care of me and I've recommended him to all my friends. Thank you Dr
May 2, 2026
5
Dr hammen is great and the nurse ,receptionist all Exellent thanks
April 10, 2026
5
Very nice staff makes you feel rite at home
April 3, 2026
5
Very nice staff makes you feel rite at home
April 3, 2026
5
Dr hammen is great and the nurse ,receptionist all Exellent thanks
April 10, 2026
5
Dr Hammond has taken great care of me and I've recommended him to all my friends. Thank you Dr
May 2, 2026
5
Dr. Hammen was warm and friendly. He explained everything that I needed to know about my problem. I trust him to do my surgery.
May 9, 2026
5
Dr Hammen and staff are the best
May 16, 2026
5
Everyone was extremely nice and helpful
May 30, 2026
5
My experience was pleasant and everyone was professional, and helpful.
May 30, 2026
5
Thank you!
May 30, 2026
5
I read good things about Dr. Hammen, and though it was a long drive for me to see him, I'm very glad that I did. Trusted him completely upon meeting him and found my consultation to be highly educational, not rushed, and came away with a strong game plan that resorted to surgery as a last option. That's saying something coming from a surgeon. Came away highly impressed and feeling good about my treatment plan.
May 30, 2026
5
The staff were very friendly and courteous. I felt comfortable in the office.
June 5, 2026
5
Staff is amazing! Answered questions and eased my anxiety and concerns.
June 14, 2026
5
Very professional
June 16, 2026
5
I felt appreciated and comfortable at my appointment. Dr. Hammen was most efficient with details.
June 19, 2026
5
Dr. Hammen was amazing!! The staff was friendly and courteous!!
June 26, 2026
5
They always treat me really well every time I come
June 27, 2026
5
Only critique i would say is the friendliness of the lady at the rear check out across from the nurse's station. I didn't get her name, but she was kind of rude, a little argumentative especially, when I ask for a work excuse. She also cut me off when I tried to explain what the doctor said to me about scheduling. Other than that, everyone with the exception of her was excellent!
July 3, 2026
5
very caring and patient and knowledgeable not only the doctor but the staff as well appointment was on time and i was not rushed facilities were comfortable and clean
July 4, 2026
5
Yes, from the beginning of the receptionist check-in to the various, I was extremely impressed, and everybody was so nice and professional. And I love Dr. Patrick all my visits. This is my first time having this experience with me with him, and he is everything that he is supposed to be for his skills. And I'm grateful to have him. So thank you so much.
July 5, 2026
5
The entire experience was professional, positive and attentive.
July 18, 2026
5
From the young lady that checked me in, to the medical assistant Desi to Dr. Hammen. Everyone was awesome!!
July 24, 2026
5
Dr. Hammen and his staff are amazing. In a difficult colon situation, they really do care. They listen to you and make you feel comfortable.
August 12, 2026
5
excellent
August 14, 2026
5
Dr Hammen and his staff are the very best!
August 14, 2026
5
Dr. Hammen was very informative and very charismatic and he listened to everything I had to say. Very informative and I really appreciate the time he took to actually see me.
August 16, 2026
5
I was delighted with how the team was professional, thorouh and friendly. The provider listened and patiently answered my questions.
August 21, 2026
5
The doctor and nurses where very polite and helpful
August 30, 2026
5
Dr Hammen is very nice & completely thorough in explaining everything to me. In addition, he answered all of my questions.
September 11, 2026
5
Excellent care from this office.
September 19, 2026
5
Dr. Hammen was very thorough and kind and patient and listened and answered all questions and made me feel at ease. And did not rush me. Made me feel very comfortable.
October 10, 2026
5
Really like and trust Dr Hammen. He explains everything clearly and easily understood. Office staff is great too!!
October 17, 2026
Publications and Articles
Wellstar PeopleCare | CJ's Heart Health & Screening Care Journey
Former former major league baseball player CJ Stewart didn’t want to have a colonoscopy. He dreaded the liquid diet. The needles. The IV sedation. The possibility of cancer.
So how did CJ face his fears—and what happened next?
On track for a heart attack
It started in 2020 when CJ scouted a new primary care provider. He chose Dr. Randy Hines II, Wellstar Primary Care. He said Dr. Hines was the most straightforward doctor he had ever visited.
“I was overweight,” CJ remembered. “My health changed positively because Dr. Hines said things to me in a very positive way. He was direct with me and that helped save my life.”
Dr. Hines learned CJ’s father was a diabetic and had quadruple bypass heart surgery to treat a heart attack. CJ remembered him saying, “‘You’re on track to have the same thing but you can control it.’”
CJ admitted that he had a daily dose of French fries and two peanut butter and jelly sandwiches before bed. Dr. Hines challenged him to rethink his relationship with food if he wanted to see his daughters walk down the aisle one day. It was tough talk and it meant something.
“I really love my daughters!” CJ said. “It made me change.”
As a result, he modified his diet, took up running and lost 45 pounds.
Preventing colorectal cancer
Then CJ’s mom revealed a family history of colon cancer.
“My wife and daughters were like, ‘We really need you to go get checked to make sure you’re good,’” he said.
Because of his fears related to the colonoscopy, CJ wanted to have Cologuard, an at-home screening test for colon cancer. But Dr. Hines recommended the 47-year-old have a preventive colonoscopy screening instead, explaining that if pre-cancerous polyps are detected during the procedure, they can be removed before becoming cancerous.
“I didn’t want to hear it,” CJ laughed. “But hearing that from a fellow African American man, I trusted that it was the right thing to do.”
