NPPES file of Aug 9, 2026

Jean M. Larson, MD

Gastroenterology Physician · Bangor, ME

Jean M. Larson, MD is a gastroenterology physician with a practice address in Bangor, Maine, and NPI 1033206941, issued on Oct 10, 2006. Check the license (Maine 018950, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033206941
Name
Jean M. Larson
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
018950 ME
ME100673 FL
Self-reported in NPPES; status is on the state search
Practice location
417 State St Ste 121, Bangor, ME 04401
Phone
(207) 973-4266
Enumerated
Oct 10, 2006
Record last updated
Feb 28, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(207) 973-5151
Medicaid IDs
280216300 FL
1033206941 ME
Medicare enrollment
Enrolled (PECOS I20111214000808); accepts Medicare assignment
Medical or professional school
University Of Wisconsin School Of Medicine, 2003
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 417 State St Ste 121

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lindsey Bartlett, PA-CMedical Physician Assistant1134749039
  2. Kevin Brown, PA-CPhysician Assistant1144798992
  3. Harsha Chekuri, PA-CPhysician Assistant1194587899
  4. Joseph Harkins, PA-CPhysician Assistant1912976911
  5. Theodore James, M.D.Gastroenterology Physician1003159559
  6. Janese Laster, M.D.Gastroenterology Physician1679839047

Verify Jean M. Larson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
    Search for license 018950
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maine license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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18% fewer Medicare Part D claims than the average gastroenterology physician in 2024

664 Medicare Part D claims for 189 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.

  1. Jean Larson664
  2. Specialty average811

Most prescribed

  1. Famotidine64 claims
  2. Pantoprazole Sodium55 claims
  3. Omeprazole54 claims
  4. Linzess33 claims
  5. Peg 3350-Electrolyte33 claims
  6. Humira(Cf) Pen25 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $56.19

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jean Larson$56.19
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. St Joseph HospitalBangor, ME · Acute Care Hospitals3 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Jean M. Larson among 86 gastroenterology physician records in Maine

Jean M. Larson, MD is one of 86 gastroenterology physician records with a practice address in Maine. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.

  • NPI issued2006 · 15% of these records are older, 44% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2003 · median 2003 among the 61 with a school on file
  • Record last updated2012 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Maine

There are 86 gastroenterology physician records in Maine.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Phillip Amidon, MDBangor, ME 044011235222043
  2. Brian Berberian, M.D.Bangor, ME 044011861422586
  3. Daniel Cassidy, MDBangor, ME 044011427096494
  4. Angeli Chopra, M.DBangor, ME 044011992105043
  5. Stephen Eskin, M.D.Bangor, ME 044011871515379
  6. Joseph Gallagher, MDBangor, ME 044011881863785
  7. Theodore James, M.D.Bangor, ME 044011003159559
  8. Janese Laster, M.D.Bangor, ME 044011679839047

Common questions

What is Jean M. Larson, MD's NPI number?

Jean M. Larson, MD's National Provider Identifier (NPI) is 1033206941, issued on Oct 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jean M. Larson, MD located?

The NPPES record lists a practice address at 417 State St Ste 121, Bangor, ME, 04401. Phone: (207) 973-4266. Providers update this record themselves, so call before visiting.

How can I verify Jean M. Larson, MD's license?

NPPES lists Maine license number 018950, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jean M. Larson, MD prescribe under Medicare Part D?

In 2024, Jean M. Larson, MD had 664 Medicare Part D claims for 189 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.