Nancy Larkin, M.D.
Family Medicine Physician · Worcester, MA
Nancy Larkin, M.D. is a family medicine physician with a practice address in Worcester, Massachusetts, and NPI 1184851891, issued on Jun 20, 2009. Check the license (Massachusetts 241320, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Nancy Larkin
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 241320 MA
Self-reported in NPPES; status is on the state search - Practice location
- 281 Lincoln St, Worcester, MA 01605
- Phone
- (978) 878-8371
- Enumerated
- Jun 20, 2009
- Record last updated
- Jan 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20120821000866); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 281 Lincoln St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nancy Larkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 241320Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average family medicine physician in 2024
1,491 Medicare Part D claims for 321 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium144 claims
- Losartan Potassium73 claims
- Levothyroxine Sodium62 claims
- Lisinopril58 claims
- Amlodipine Besylate52 claims
- Hydrochlorothiazide37 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.
Bills Medicare through one group practice
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nancy Larkin among 2,265 family medicine physician records in Massachusetts
Nancy Larkin, M.D. is one of 2,265 family medicine physician records with a practice address in Massachusetts. 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 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 39% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2009 · median 2006 among the 1,529 with a school on file
- Record last updated2022 · 59% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
168 family medicine physician records list a practice address in Worcester
They are 168 of the 13,166 NPPES records with a practice address in Worcester, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Worcester → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ronald Adler, M.D.Worcester, MA 016051083697841
- Katharine Barnard, M.D.Worcester, MA 016051326023425
- James Broadhurst, M.D.Worcester, MA 016051457334351
- Gina D'Ottavio, M.D.Worcester, MA 016051114902038
- Michael Ennis, M.D.Worcester, MA 016051861482663
- Gerald Gleich, M.D.Worcester, MA 016051962485722
- Jeremy Golding, M.D.Worcester, MA 016051407838378
- Lisa Gordon, MDWorcester, MA 016051861478984
Common questions
What is Nancy Larkin, M.D.'s NPI number?
Nancy Larkin, M.D.'s National Provider Identifier (NPI) is 1184851891, issued on Jun 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Nancy Larkin, M.D. located?
The NPPES record lists a practice address at 281 Lincoln St, Worcester, MA, 01605. Phone: (978) 878-8371. Providers update this record themselves, so call before visiting.
How can I verify Nancy Larkin, M.D.'s license?
NPPES lists Massachusetts license number 241320, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nancy Larkin, M.D. prescribe under Medicare Part D?
In 2024, Nancy Larkin, M.D. had 1,491 Medicare Part D claims for 321 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.