Claudia L. Ma, MD
Family Medicine Physician · Somerville, MA
Claudia L. Ma, MD is a family medicine physician with a practice address in Somerville, Massachusetts, and NPI 1790245041, issued on Mar 22, 2019. Check the license (Massachusetts 291202, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Claudia L. Ma
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 291202 MA
Self-reported in NPPES; status is on the state search - Practice location
- 40 Holland St, Somerville, MA 02144
- Phone
- (617) 629-6000
- Enumerated
- Mar 22, 2019
- Record last updated
- Jun 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20220408000542); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 40 Holland St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Claudia L. Ma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 291202Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average family medicine physician in 2024
588 Medicare Part D claims for 98 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate38 claims
- Atorvastatin Calcium37 claims
- Omeprazole29 claims
- Gabapentin23 claims
- Levothyroxine Sodium22 claims
- Metoprolol Succinate20 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
- Atrius Health IncSomerville, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Claudia L. Ma among 2,265 family medicine physician records in Massachusetts
Claudia L. Ma, MD 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 2019, is newer than 84% of them.
- NPI issued2019 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2019 · 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).
30 family medicine physician records list a practice address in Somerville
They are 30 of the 1,860 NPPES records with a practice address in Somerville, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Somerville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Deborah Bershel, MDSomerville, MA 021441437257227
- Leora Fishman, MDSomerville, MA 021441013908599
- Vanessa GirondaSomerville, MA 021441831853514
- Anil Gullapalli, MDSomerville, MA 021441144272659
- Rebecca Stocking, M.D.Boston, MA 021441720177215
- Christine Amitay, M.D.Somerville, MA 021451083681522
- Jonathan Burns, M.D.Somerville, MA 021431396897096
- Andrew Chandler, MDSomerville, MA 021451548607112
Common questions
What is Claudia L. Ma, MD's NPI number?
Claudia L. Ma, MD's National Provider Identifier (NPI) is 1790245041, issued on Mar 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Claudia L. Ma, MD located?
The NPPES record lists a practice address at 40 Holland St, Somerville, MA, 02144. Phone: (617) 629-6000. Providers update this record themselves, so call before visiting.
How can I verify Claudia L. Ma, MD's license?
NPPES lists Massachusetts license number 291202, 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 Claudia L. Ma, MD prescribe under Medicare Part D?
In 2024, Claudia L. Ma, MD had 588 Medicare Part D claims for 98 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.