Kathleen McPherson Fairfield, M.D.
Internal Medicine Physician · Portland, ME
Kathleen McPherson Fairfield, M.D. is an internal medicine physician with a practice address in Portland, Maine, and NPI 1992744353, issued on Jun 4, 2006. Check the license (Maine MD15819, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Kathleen McPherson Fairfield
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD15819 ME
Self-reported in NPPES; status is on the state search - Practice location
- 22 Bramhall St, Portland, ME 04102
- Phone
- (207) 662-2911
- Enumerated
- Jun 4, 2006
- Record last updated
- Feb 13, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (207) 662-6788
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 597 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.
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Verify Kathleen McPherson Fairfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD15819Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
41 Medicare Part D claims for 19 beneficiaries, against an average of 3,176 among the 108,855 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.
Kathleen McPherson Fairfield among 597 internal medicine physician records in Maine
Kathleen McPherson Fairfield, M.D. is one of 597 internal medicine physician records with a practice address in Maine. 77% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2013 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
145 internal medicine physician records list a practice address in Portland
They are 145 of the 6,022 NPPES records with a practice address in Portland, and 597 internal medicine physician records in Maine.
All 597 in Maine → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Elizabeth Ackerson, MDPortland, ME 041021912920117
- Ari Berman, MDPortland, ME 041021225015829
- Kirsten Berman, M.D.Portland, ME 041021043280431
- Nananda Col, MDPortland, ME 041021104870377
- Heidi Deblock, M.D.Portland, ME 041021922095892
- Steven Hess, MDPortland, ME 041021427099498
- Rabee Kiwan, MDPortland, ME 041021992784938
- Laurin Koskinen, MDPortland, ME 041021356456636
Common questions
What is Kathleen McPherson Fairfield, M.D.'s NPI number?
Kathleen McPherson Fairfield, M.D.'s National Provider Identifier (NPI) is 1992744353, issued on Jun 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen McPherson Fairfield, M.D. located?
The NPPES record lists a practice address at 22 Bramhall St, Portland, ME, 04102. Phone: (207) 662-2911. Providers update this record themselves, so call before visiting.
How can I verify Kathleen McPherson Fairfield, M.D.'s license?
NPPES lists Maine license number MD15819, 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 Kathleen McPherson Fairfield, M.D. prescribe under Medicare Part D?
In 2024, Kathleen McPherson Fairfield, M.D. had 41 Medicare Part D claims for 19 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.