NPPES file of Aug 9, 2026

Thomas William Ong S Chan, PA-STUDENT

Surgical Physician Assistant · Pittsfield, MA

Thomas William Ong S Chan, PA-STUDENT is a surgical physician assistant with a practice address in Pittsfield, Massachusetts, and NPI 1710641964, issued on Oct 25, 2021. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1710641964
Name
Thomas William Ong S Chan
Credential
PA-STUDENT
Primary taxonomy
Surgical Physician Assistant 363AS0400X
Practice location
725 North St, Pittsfield, MA 01201
Phone
(413) 447-2000
Enumerated
Oct 25, 2021
Record last updated
Aug 18, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 725 North St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ahmed AbdelnabiInternal Medicine Physician1528620507
  2. Margarita Abramovich, MDPsychiatry Physician1154883239
  3. Jacqueline AdamsMedical-Surgical Registered Nurse1396507026
  4. Erik Adler, D.O.Student in an Organized Health Care Education/Training Program1700468915
  5. Parinaz Afrashteh, MDStudent in an Organized Health Care Education/Training Program1609677715
  6. Deepak Agarwal, MDDiagnostic Radiology Physician1043265754

Verify Thomas William Ong S Chan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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77% fewer Medicare Part D claims than the average surgical physician assistant in 2024

69 Medicare Part D claims for 51 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 42 claims were for opioids.

  1. Thomas William Ong S Chan69
  2. Specialty average304

Most prescribed

  1. Oxycodone Hcl32 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.

Thomas William Ong S Chan among 516 surgical physician assistant records in Massachusetts

Thomas William Ong S Chan, PA-STUDENT is one of 516 surgical physician assistant records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 85% of them.

  • NPI issued2021 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2023 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Physician Assistant providers in Massachusetts

There are 516 surgical physician assistant records in Massachusetts.

The 8 surgical physician assistant records with the nearest ZIP codes

  1. Laurie Bartling, PAPittsfield, MA 012011053506998
  2. Ilana Berti, PA-CPittsfield, MA 012011699309104
  3. Nicholas Coman, PA-CPittsfield, MA 012011952085953
  4. Renee Isaacs, PA-CPittsfield, MA 012011609501113
  5. Joseph Kotelnicki, PA-CPittsfield, MA 012011255669552
  6. James O'Brien, PA-CPittsfield, MA 012011245485572
  7. Laurieann Quiry, PHYSICIAN ASSISTANTPittsfield, MA 012011356823694
  8. Steven Rich, PA-CPittsfield, MA 012011396981072

Common questions

What is Thomas William Ong S Chan, PA-STUDENT's NPI number?

Thomas William Ong S Chan, PA-STUDENT's National Provider Identifier (NPI) is 1710641964, issued on Oct 25, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Thomas William Ong S Chan, PA-STUDENT located?

The NPPES record lists a practice address at 725 North St, Pittsfield, MA, 01201. Phone: (413) 447-2000. Providers update this record themselves, so call before visiting.

How can I verify Thomas William Ong S Chan, PA-STUDENT's license?

Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Thomas William Ong S Chan, PA-STUDENT prescribe under Medicare Part D?

In 2024, Thomas William Ong S Chan, PA-STUDENT had 69 Medicare Part D claims for 51 beneficiaries; the average among surgical physician assistant prescribers was 304. 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.