
Highlights
Age Groups Seen
- Adult 18-65
- Older Adult 65+
Languages
- English
Gender
FemaleAffiliations
- Cooper University Hospital
About G. Robert Witmer
Title
Primary Care Physician
Internal Medicine Physician
Awards and Honors
SJ Magazine, Top Doc - 2013, 2014
Top 25 top teacher rating, Thomas Jefferson Internal Medicine Residents - 2009, 2012, 2013
Community Ambulatory Attending Award, Thomas Jefferson Residency program - 2007, 2009, 2013, 2017
Practice Group :
Cooper Care Alliance
Appointments
Education and Training
Education
- Residency: Thomas Jefferson University Hospital, Internal Medicine, 2003
- Medical School: University of Rochester School of Medicine & Dentistry, 2000
Board Certifications
- Internal Medicine: American Board of Internal Medicine, 2003
Insurance
- Aetna Better Health Medicaid HMO
- Aetna First Health (Coventry)
- Aetna HMO/PPO/POS
- Aetna Medicare
- Aetna Quality Health
- Aetna Whole Health
- AmeriHealth HMO/PPO/POS
- AmeriHealth Medicare
- AmeriHealth Value Network
- Braven Health Medicare
- Cigna Evernorth Behavioral Health
- Cigna HMO/PPO/POS
- Cigna Medicare
- Cigna One Health
- Clover Health Medicare PPO
- Fidelis Care Medicaid HMO
- First MCO Group Health
- Galaxy Health Network Group Health
- Guardian
- Horizon Blue Cross Blue Shield of New Jersey HMO/PPO
- Horizon Blue Cross Blue Shield of New Jersey Omnia
- Horizon Blue Cross Blue Shield of New Jersey State Benefit Plans
- Horizon NJ Health Medicaid HMO
- Horizon NJ Health NJ Family Kidcare
- Humana Medicare Advantage Medicare HMO
- Humana Medicare Advantage Medicare PPO
- Humana Military Prime
- Humana Military Standard
- Humana Military TriCare
- Independence Blue Cross IBC PPO
- Independence Blue Cross Keystone Healthplan East
- Independence Blue Cross Medicare
- Independence Blue Cross Personal Choice
- Jefferson Health Plans Medicare HMO
- Jefferson Health Plans Medicare PPO
- Longevity Health Plan Medicare PPO I-SNP
- Magellan Behavioral Health
- MagnaCare Group Health
- Medicaid (NJ)
- Medicare
- MultiPlan PHCS
- Prime Health Services Group Health
- QualCare Emblem Health
- QualCare HMO/PPO
- Railroad Medicare
- Three Rivers Contigo
- Three Rivers Devon
- United Behavioral Health Group Health
- United Behavioral Health Medicaid
- United Behavioral Health Medicare
- United Behavioral Health Optum
- United Healthcare AARP
- United Healthcare Community Plan Medicaid HMO
- United Healthcare Community Plan NJ Family Kidcare
- United Healthcare Dual Complete D-SNP
- United Healthcare Group Health
- United Healthcare Medicaid
- United Healthcare Medicare
- United Healthcare Medicare Advantage
- US Family Health Plan
- VA Community Care Network
- WellCare Medicare
- Wellpoint Medicaid HMO
- Wellpoint Medicare
Ratings & Reviews
4.8 out of 5
30 ratings, 38 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- Reviewed on 12/6/2025
Dr Witmer is a caring, exceptional man who cares about his patients well being. I would highly recommend him to anyone.
- Reviewed on 12/6/2025
Each visit is always a good experience
- Reviewed on 12/6/2025
I am always impressed by the staff. Everyone is attentive and smiling. I get great care from Dr Witmer and I leave the office with a good feeling.
- Reviewed on 12/5/2025
Me and my wife have been seen by doctor Witmer probably for the past 20 years and he's a great doctor.
- Reviewed on 12/5/2025
Dr. Witmer is wonderful and always takes the time during the appointment to explain things clearly and always professional. The staff is welcoming and a pleasure as well.
- Reviewed on 12/4/2025
Everyone was great. Dr wittmer especially
- Reviewed on 12/4/2025
Dr. Witmer is always courteous and attentive.
- Reviewed on 12/3/2025
Hands down the best office I've been to. I mention it to friends and family all the time!
- Reviewed on 12/2/2025
Dr Whitmer is great we drive an hour from PA
- Reviewed on 11/5/2025
Everyone at Copper is always friendly and courteous. Real nice people.
- Reviewed on 11/4/2025
Dr. Witmer is the best!
- Reviewed on 11/3/2025
Dr. Witmer is the best doc I have ever had. I've been with him almost 20 years and travel from far away to see him.
- Reviewed on 11/2/2025
Dr Witmer and the staff are WONDERFUL!! !
- Reviewed on 11/2/2025
Dr. Whitmer is wonderful and caring. Have always been a Jefferson patient, followed him to Cooper!
- Reviewed on 10/4/2025
Dr Witmer is the best doctor. Easy to talk to and he listens and follows up.
- Reviewed on 10/4/2025
Dr Witmer is a great manager of our healthcare and the staff is excellent along with being pleasant! Thank you
- Reviewed on 10/4/2025
perfect patient experience.
- Reviewed on 10/2/2025
Dr. Whitmer is always responsive to my needs and gets me quick responses through my chart.
- Reviewed on 10/2/2025
Dr witmer is an excellent provider and has been my pcp for many years. He has seen me through some very difficult times and has been unwavering in his support. He's an excellent clinician and very knowlegeable. I am grateful for the wholistic care he provides.
- Reviewed on 9/6/2025
Dr Witmer is knowledgeable , caring and very thorough, always asks if I have any further questions, totally supportive and generally great!
- Reviewed on 9/4/2025
It's always a good experience dealing with Dr. Witmer and his staff.
- Reviewed on 9/4/2025
Dr. Witmer is a very caring and knowledgeable doctor. The office staff is very pleasant.
- Reviewed on 9/2/2025
Great Dr.
- Reviewed on 8/4/2025
Provider is kind and respectful.
- Reviewed on 8/4/2025
Dr Witmer is simply the best! Wonderfully kind, warm and compassionate, very friendly and easy to talk to. I recommend him to everybody.
- Reviewed on 8/3/2025
Parking is tough but once inside everything was great
- Reviewed on 7/6/2025
Dr Witmer is about as good as it gets.A good listener who try's to solve your problems.A lot of thought goes into his response after you ask a question to give the best possible solution to your problems.
- Reviewed on 7/3/2025
Part of being a good doctor is listening and the ability to put patients at ease. His demeanor is a little bit of humor and a lot of candor. Those two qualities are the best! I am so glad Dr Witmer is my doctor.
- Reviewed on 6/24/2025
Quality medical care with reasonable wait time.
- Reviewed on 6/21/2025
Dr. Witmer is very thorough and reviews everything. He asks pertinent questions and allows the patient to voice their concerns and questions. And he actually listens to patients and discusses any difficulties.
- Reviewed on 6/18/2025
It is ALWAYS a pleasure coming to Dr. Witmer's office. The staff are always friendly, helpful and courteous. I don't mind waiting a little longer after my appointment time because I know Dr. Witmer cares about his patients and I will receive the same attention they did.
- Reviewed on 6/17/2025
I appreciate the service I received because I was able to get an appointment in an emergency situation. Thank you.
- Reviewed on 6/17/2025
Dr. Witmer is the best
- Reviewed on 6/12/2025
Great experiencevas always! Best doctors and run best. Thanknthem
- Reviewed on 6/10/2025
Dr. Witmer is kind, caring, and warm. Everyone on the staff is as well. He is also very responsive on the portal. I get an answer from HIM, not a nurse, usually before the day is over.
- Reviewed on 6/5/2025
Everything was excellent.
- Reviewed on 4/14/2025
It's always a pleasure to see Dr.Witmer.
- Reviewed on 2/13/2025
Since my original PCP provider has left this practice, I was given Dr Witmer as a replacement. He was extremely welcoming.
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