John Barber, MD
Hospitalist Physician · Portland, ME
John Barber, MD is a hospitalist physician with a practice address in Portland, Maine, and NPI 1437716438, issued on May 24, 2019. Check the license (Maine MD27839, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Barber
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- MD27839 ME
Self-reported in NPPES; status is on the state search - Practice location
- 22 Bramhall St, Portland, ME 04102
- Phone
- (207) 662-0111
- Enumerated
- May 24, 2019
- Record last updated
- Oct 29, 2024
- Medicare enrollment
- Enrolled (PECOS I20240308003233); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2019
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 245 in Maine → Look up another NPI →
Also registered at 22 Bramhall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Abbatiello, NP-CFamily Nurse Practitioner1871811737
- Ruslan Abdukalikov, DOAnesthesiology Physician1831694793
- Tod Abrahams, M.D.Diagnostic Radiology Physician1538231642
- Joshua Abrams, PA-CSurgical Physician Assistant1932832128
- Christopher Abruzzese, D.OAnesthesiology Physician1558789305
- Haley Acker, PA-CPhysician Assistant1972167377
Verify John Barber in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD27839Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average hospitalist physician in 2024
104 Medicare Part D claims for 46 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through 2 group practices
- MainehealthPortland, ME
- Mercy HospitalPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Barber among 245 hospitalist physician records in Maine
John Barber, MD is one of 245 hospitalist physician records with a practice address in Maine. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 77% of them.
- NPI issued2019 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2019 · median 2012 among the 206 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
81 hospitalist physician records list a practice address in Portland
They are 81 of the 6,022 NPPES records with a practice address in Portland, and 245 hospitalist physician records in Maine.
All 245 in Maine → Every provider in Portland → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Lisa Almeder, MDPortland, ME 041021033238332
- Jeffrey Balke, MDPortland, ME 041021285694109
- Lane Beatty, MDPortland, ME 041021467533166
- Thomas Charrette, MDPortland, ME 041021679565626
- Anne Dean, MDPortland, ME 041021801932884
- Kathryn Diamond-Falk, MDPortland, ME 041021306045034
- Marc Jacquet, MDPortland, ME 041021740212364
- Tara Lagu, MDPortland, ME 041021306943980
Common questions
What is John Barber, MD's NPI number?
John Barber, MD's National Provider Identifier (NPI) is 1437716438, issued on May 24, 2019. An NPI identifies a provider in billing; it is not a license.
Where is John Barber, MD located?
The NPPES record lists a practice address at 22 Bramhall St, Portland, ME, 04102. Phone: (207) 662-0111. Providers update this record themselves, so call before visiting.
How can I verify John Barber, MD's license?
NPPES lists Maine license number MD27839, 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 John Barber, MD prescribe under Medicare Part D?
In 2024, John Barber, MD had 104 Medicare Part D claims for 46 beneficiaries; the average among hospitalist physician prescribers was 521. 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.