NPPES file of Aug 9, 2026

Catherine Dam, PA, MPH

Physician Assistant · Boston, MA

Catherine Dam, PA, MPH is a physician assistant with a practice address in Boston, Massachusetts, and NPI 1982239430, issued on Mar 5, 2020. 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
1982239430
Name
Catherine Dam
Credential
PA, MPH
Primary taxonomy
Physician Assistant 363A00000X
Practice location
357 Commercial St Apt 420, Boston, MA 02109
Phone
(310) 291-9503
Enumerated
Mar 5, 2020
Record last updated
Oct 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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Verify Catherine Dam 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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78% fewer Medicare Part D claims than the average physician assistant in 2024

184 Medicare Part D claims for 101 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 51 claims were for opioids.

  1. Catherine Dam184
  2. Specialty average830

Most prescribed

  1. Oxycodone Hcl44 claims
  2. Celecoxib33 claims
  3. Enoxaparin Sodium21 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.

Catherine Dam among 4,713 physician assistant records in Massachusetts

Catherine Dam, PA, MPH is one of 4,713 physician assistant records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 56% of them.

  • NPI issued2020 · 56% of these records are older, 37% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 68% of these records are
  • Record last updated2023 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,660 physician assistant records list a practice address in Boston

They are 1,660 of the 41,865 NPPES records with a practice address in Boston, and 4,713 physician assistant records in Massachusetts.

The 8 physician assistant records with the nearest ZIP codes

  1. Gregory Brennan, PA-CBoston, MA 021091629300124
  2. Diane Foley, PABoston, MA 021091285698050
  3. Erin McNiffBoston, MA 021091376991497
  4. Nicolette MeloBoston, MA 021091770251845
  5. Suela Omeri, PA-CBoston, MA 021091073213088
  6. Scott Orrahood, PABoston, MA 021091376606061
  7. Lee Orsky, PABoston, MA 021091063513950
  8. Amanda Perillo, PA-CBoston, MA 021091033554241

Common questions

What is Catherine Dam, PA, MPH's NPI number?

Catherine Dam, PA, MPH's National Provider Identifier (NPI) is 1982239430, issued on Mar 5, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Catherine Dam, PA, MPH located?

The NPPES record lists a practice address at 357 Commercial St Apt 420, Boston, MA, 02109. Phone: (310) 291-9503. Providers update this record themselves, so call before visiting.

How can I verify Catherine Dam, PA, MPH's license?

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

How much does Catherine Dam, PA, MPH prescribe under Medicare Part D?

In 2024, Catherine Dam, PA, MPH had 184 Medicare Part D claims for 101 beneficiaries; the average among physician assistant prescribers was 830. 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.