Arthur J. Siegel, MD
Internal Medicine Physician · Belmont, MA
Arthur J. Siegel, MD is an internal medicine physician with a practice address in Belmont, Massachusetts, and NPI 1881675601, issued on Nov 9, 2005. Check the license (Massachusetts 30958, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Arthur J. Siegel
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 30958 MA
Self-reported in NPPES; status is on the state search - Practice location
- 115 Mill St, Belmont, MA 02478
- Phone
- (617) 855-2358
- Enumerated
- Nov 9, 2005
- Record last updated
- Feb 11, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (617) 855-3731
- Medicaid ID
- 2029332 MA
- Medicare enrollment
- Enrolled (PECOS I20040421001479); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1967
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 115 Mill St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Arthur J. Siegel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 30958Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
166 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Buprenorphine-Naloxone24 claims
- Amlodipine Besylate15 claims
- Metoprolol Succinate12 claims
- Venlafaxine Hcl Er12 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
- Massachusetts General Physicians Organization IncBelmont, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Arthur J. Siegel among 6,825 internal medicine physician records in Massachusetts
Arthur J. Siegel, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1967 · median 2004 among the 4,103 with a school on file
- Record last updated2014 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 internal medicine physician records list a practice address in Belmont
They are 11 of the 1,008 NPPES records with a practice address in Belmont, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Belmont → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Azadeh Assarpour, M.D.Belmont, MA 024781841430030
- Subbiah Doraiswami, M.D.Belmont, MA 024781093959439
- Deborah Haley, MD PHDBelmont, MA 024781821088105
- Marian KlepserBelmont, MA 024781528058211
- Donald Misquitta, MDBelmont, MA 024781780825216
- Patricia Moyer, MDBelmont, MA 024781619974979
- Richard Benjamin Patti, M.D.Belmont, MA 024781588602866
- Richard Romero, MDBelmont, MA 024781235129412
Common questions
What is Arthur J. Siegel, MD's NPI number?
Arthur J. Siegel, MD's National Provider Identifier (NPI) is 1881675601, issued on Nov 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Arthur J. Siegel, MD located?
The NPPES record lists a practice address at 115 Mill St, Belmont, MA, 02478. Phone: (617) 855-2358. Providers update this record themselves, so call before visiting.
How can I verify Arthur J. Siegel, MD's license?
NPPES lists Massachusetts license number 30958, 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 Arthur J. Siegel, MD prescribe under Medicare Part D?
In 2024, Arthur J. Siegel, MD had 166 Medicare Part D claims for 11 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.