David D. Keller, D.O
Family Medicine Physician · Portland, ME
David D. Keller, D.O is a family medicine physician with a practice address in Portland, Maine, and NPI 1861448201, issued on May 26, 2006. Check the license (Maine 1819, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- David D. Keller
- Credential
- D.O
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 1819 ME
Self-reported in NPPES; status is on the state search - Practice location
- 1250 Forest Ave, Portland, ME 04103
- Phone
- (207) 347-3164
- Enumerated
- May 26, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (207) 878-5043
- Medicare enrollment
- Enrolled (PECOS I20060824000065); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2002
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,172 in Maine → Look up another NPI →
Also registered at 1250 Forest Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David D. Keller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 1819Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $22.52
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Hospital Osteopathic Manipulative Medicine PCPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David D. Keller among 1,172 family medicine physician records in Maine
David D. Keller, D.O is one of 1,172 family medicine physician records with a practice address in Maine. 76% 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, 52% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2002 · median 2008 among the 668 with a school on file
- Record last updated2026 · 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 207Q00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
89 family medicine physician records list a practice address in Portland
They are 89 of the 6,022 NPPES records with a practice address in Portland, and 1,172 family medicine physician records in Maine.
All 1,172 in Maine → Every provider in Portland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christopher Bartlett, M.D.Portland, ME 041031083656961
- Steven Brewster, MDPortland, ME 041031497851307
- Cathra Chappelle, MDPortland, ME 041031912957069
- Patrick Connolly, MDPortland, ME 041031982655098
- Richard Entel, MDPortland, ME 041031760418990
- James Harper, MDPortland, ME 041031245286129
- Lewis Holmes, MDPortland, ME 041031649269184
- David Howes, MDPortland, ME 041031407802382
Common questions
What is David D. Keller, D.O's NPI number?
David D. Keller, D.O's National Provider Identifier (NPI) is 1861448201, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David D. Keller, D.O located?
The NPPES record lists a practice address at 1250 Forest Ave, Portland, ME, 04103. Phone: (207) 347-3164. Providers update this record themselves, so call before visiting.
How can I verify David D. Keller, D.O's license?
NPPES lists Maine license number 1819, 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.
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.