Thomas Britton Percy, MD
Internal Medicine Physician · Westfield, MA
Thomas Britton Percy, MD is an internal medicine physician with a practice address in Westfield, Massachusetts, and NPI 1699709352, issued on Jul 10, 2006. Check the license (Massachusetts 151347, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Thomas Britton Percy
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 151347 MA
Self-reported in NPPES; status is on the state search - Practice location
- 115 W Silver St, Westfield, MA 01085
- Phone
- (413) 572-5099
- Enumerated
- Jul 10, 2006
- Record last updated
- Apr 30, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (413) 572-4151
- Medicaid ID
- 3153916 MA
- Medicare enrollment
- Enrolled (PECOS I20060118000713); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 115 W Silver St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas Britton Percy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 151347Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
985 Medicare Part D claims for 236 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Donepezil Hcl431 claims
- Sertraline Hcl99 claims
- Rivastigmine72 claims
- Trazodone Hcl46 claims
- Galantamine Er42 claims
- Galantamine Hbr29 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 3 group practices
- Baystate Medical Practices IncSpringfield, MA
- Boston Center For Memory IncNewton Center, MA
- Mass General Brigham Medical Group Western Massachusetts IncNorthampton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Britton Percy among 6,825 internal medicine physician records in Massachusetts
Thomas Britton Percy, 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1993 · median 2004 among the 4,103 with a school on file
- Record last updated2008 · 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).
23 internal medicine physician records list a practice address in Westfield
They are 23 of the 910 NPPES records with a practice address in Westfield, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Westfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michelle Barnett, MDWestfield, MA 010851538127048
- Bashir Bashiruddin, MDWestfield, MA 010851578513222
- Roger Beneitone, MDWestfield, MA 010851760452635
- Laura Gioiella, MDWestfield, MA 010851609864933
- Joshua Kalter, M.D.Westfield, MA 010851669534921
- Gurpal Kingra, MDWestfield, MA 010851538199880
- Charlotte Miller, M.D.Westfield, MA 010851346272861
- David Peterson, MDWestfield, MA 010851619918752
Common questions
What is Thomas Britton Percy, MD's NPI number?
Thomas Britton Percy, MD's National Provider Identifier (NPI) is 1699709352, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Britton Percy, MD located?
The NPPES record lists a practice address at 115 W Silver St, Westfield, MA, 01085. Phone: (413) 572-5099. Providers update this record themselves, so call before visiting.
How can I verify Thomas Britton Percy, MD's license?
NPPES lists Massachusetts license number 151347, 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 Thomas Britton Percy, MD prescribe under Medicare Part D?
In 2024, Thomas Britton Percy, MD had 985 Medicare Part D claims for 236 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.