Overview
John Walker is a Gastroenterologist in Portland, Maine. Dr. Walker is highly rated in 1 condition, according to our data. His top areas of expertise are Colitis, Hemorrhagic Proctocolitis, Familial Adenomatous Polyposis, Diverticular Disease, and Endoscopy.
His clinical research consists of co-authoring 2 peer reviewed articles. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- HMO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- EPO
- HMO
- PPO
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- PPO
- HMO
- POS
- PPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- EPO
- POS
- HMO
- INDEMNITY
- POS
- PPO
- MEDICARE MAPD
- OTHER MEDICARE
- OTHER MEDICAID
- STATE MEDICAID
- PPO
- MANAGED MEDICAID PLAN
- MEDICARE ASSISTANCE PROGRAM
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- EPO
- MANAGED MEDICAID PLAN
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
22 Bramhall St, Portland, ME 04102
9 Healthcare Dr, Biddeford, ME 04005
1 Medical Ctr Dr, Biddeford, ME 04005
Additional Areas of Focus
Dr. Walker has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
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Daniil Rolshud is a Gastroenterologist in Portland, Maine. Dr. Rolshud is highly rated in 39 conditions, according to our data. His top areas of expertise are Pancreatic Pseudocyst, Childhood Pancreatitis, Bile Duct Obstruction, Endoscopy, and Pancreatectomy.
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Fernando Calmet is a Gastroenterologist in Portland, Maine. Dr. Calmet is highly rated in 43 conditions, according to our data. His top areas of expertise are MYH9 Related Thrombocytopenia, Hypervitaminosis A, Colitis, Endoscopy, and Colonoscopy.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Advanced
- ColitisDr. Walker isAdvanced. Learn about Colitis.
- Experienced
- Acute PancreatitisDr. Walker isExperienced. Learn about Acute Pancreatitis.
- Alcoholic CirrhosisDr. Walker isExperienced. Learn about Alcoholic Cirrhosis.
- Alpha-1 Antitrypsin Deficiency (AATD)Dr. Walker isExperienced. Learn about Alpha-1 Antitrypsin Deficiency (AATD).
- AnemiaDr. Walker isExperienced. Learn about Anemia.
- Angiodysplasia of the ColonDr. Walker isExperienced. Learn about Angiodysplasia of the Colon.
- Arteriovenous MalformationDr. Walker isExperienced. Learn about Arteriovenous Malformation.