NPPES file of Aug 9, 2026

Mairead Rebecca Baker

Dermatology Physician · Portland, ME

Mairead Rebecca Baker is a dermatology physician with a practice address in Portland, Maine, and NPI 1265992259, issued on Mar 25, 2019. Check the license (Maine MD28089, 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
1265992259
Name
Mairead Rebecca Baker
Primary taxonomy
Dermatology Physician 207N00000X
License number
MD28089 ME
Self-reported in NPPES; status is on the state search
Practice location
50 Sewall St Ste 302, Portland, ME 04102
Phone
(207) 775-3526
Enumerated
Mar 25, 2019
Record last updated
Nov 21, 2024
Medicare enrollment
Enrolled (PECOS I20241024000290); accepts Medicare assignment
Medical or professional school
Loyola University Of Chicago, Stritch School Of Medicine, 2019
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 50 Sewall St Ste 302

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

  1. Nathan Brewer, M.D.Dermatology Physician1679610786
  2. Soren Craig-Muller, M.D.Dermatology Physician1205214798

Verify Mairead Rebecca Baker 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 MD28089
    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

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79% fewer Medicare Part D claims than the average dermatology physician in 2024

167 Medicare Part D claims for 82 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Mairead Baker167
  2. Specialty average797

Most prescribed

  1. Ketoconazole31 claims
  2. Triamcinolone Acetonide23 claims
  3. Clindamycin Phosphate19 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: $224.00

2 payments; by number, the most common kind was education; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mairead Baker$224.00
  2. Specialty average$8,544.61

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

Bills Medicare through one group practice

  1. Dermatology Associates, LLCPortland, ME

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mairead Rebecca Baker among 58 dermatology physician records in Maine

Mairead Rebecca Baker is one of 58 dermatology physician records with a practice address in Maine. 83% 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 95% of them.

  • NPI issued2019 · 95% of these records are older, 3% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated2019 · median 2004 among the 44 with a school on file
  • Record last updated2024 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in Maine

There are 58 dermatology physician records in Maine.

The 8 dermatology physician records with the nearest ZIP codes

  1. David Baginski, M.D.Portland, ME 041021619915451
  2. David Baird, M.D.Portland, ME 041021700170149
  3. Jennifer Bragg, M.D.Portland, ME 041021093921025
  4. Nathan Brewer, M.D.Portland, ME 041021679610786
  5. Allen Bruce, MD PHDPortland, ME 041021427175934
  6. Soren Craig-Muller, M.D.Portland, ME 041021205214798
  7. K. Erik Kostelnik, M.D.Portland, ME 041021346289683
  8. Leopold Laufer, MDPortland, ME 041021336194547

Common questions

What is Mairead Rebecca Baker's NPI number?

Mairead Rebecca Baker's National Provider Identifier (NPI) is 1265992259, issued on Mar 25, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Mairead Rebecca Baker located?

The NPPES record lists a practice address at 50 Sewall St Ste 302, Portland, ME, 04102. Phone: (207) 775-3526. Providers update this record themselves, so call before visiting.

How can I verify Mairead Rebecca Baker's license?

NPPES lists Maine license number MD28089, 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 Mairead Rebecca Baker prescribe under Medicare Part D?

In 2024, Mairead Rebecca Baker had 167 Medicare Part D claims for 82 beneficiaries; the average among dermatology physician prescribers was 797. 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.