Perry G. An, MD
Internal Medicine Physician · Newton, MA
Perry G. An, MD is an internal medicine physician with a practice address in Newton, Massachusetts, and NPI 1508992934, issued on Feb 27, 2007. Check the license (Massachusetts L-224456, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Perry G. An
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- L-224456 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2014 Washington Street, Newton, MA 02462
- Phone
- (617) 243-6433
- Enumerated
- Feb 27, 2007
- Record last updated
- Oct 26, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (617) 243-5148
- Medicare enrollment
- Enrolled (PECOS I20080908000213); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 2014 Washington Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Perry G. An in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license L-224456Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
235 Medicare Part D claims for 102 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 12 claims were for opioids.
Most prescribed
- Spironolactone18 claims
- Metoprolol Succinate16 claims
- Eliquis13 claims
- Cefpodoxime Proxetil12 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
- Mass General Brigham Medical Group Suburban Massachusetts IncNewton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Perry G. An among 6,825 internal medicine physician records in Massachusetts
Perry G. An, 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2005 · median 2004 among the 4,103 with a school on file
- Record last updated2009 · 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).
80 internal medicine physician records list a practice address in Newton
They are 80 of the 2,975 NPPES records with a practice address in Newton, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Newton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Cunningham, M.D.Newton Lower Falls, MA 024621326153503
- Allan Engel, M.D.Newton Lower Falls, MA 024621104813443
- Arthur Kennedy, M.D.Newton, MA 024621043223266
- Nicholas Michael Mascoli, M.D.Newton Lower Falls, MA 024621013964717
- John O Brien, MDNewton Lower Falls, MA 024621588678965
- Steven Pestka, M.D.Newton, MA 024621407807498
- Harry Schrager, M.D.Newton, MA 024621871540666
- David Wachs, M.D.Newton, MA 024621073571436
Common questions
What is Perry G. An, MD's NPI number?
Perry G. An, MD's National Provider Identifier (NPI) is 1508992934, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Perry G. An, MD located?
The NPPES record lists a practice address at 2014 Washington Street, Newton, MA, 02462. Phone: (617) 243-6433. Providers update this record themselves, so call before visiting.
How can I verify Perry G. An, MD's license?
NPPES lists Massachusetts license number L-224456, 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 Perry G. An, MD prescribe under Medicare Part D?
In 2024, Perry G. An, MD had 235 Medicare Part D claims for 102 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.