NPPES file of Aug 9, 2026

Elizabeth J. Keegan, PA-C

Physician Assistant · Worcester, MA

Elizabeth J. Keegan, PA-C is a physician assistant with a practice address in Worcester, Massachusetts, and NPI 1508066937, issued on Jul 24, 2007. Check the license (Massachusetts 2310, as entered in NPPES) 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
1508066937
Name
Elizabeth J. Keegan
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
2310 MA
Self-reported in NPPES; status is on the state search
Practice location
123 Summer St, Worcester, MA 01608
Phone
(508) 368-3179
Enumerated
Jul 24, 2007
Record last updated
Jul 24, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(508) 368-3164
Medicare enrollment
Enrolled (PECOS I20151001002475); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 123 Summer St

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

  1. Annie Abraham, M.D.Internal Medicine Physician1962437061
  2. Yem AbulhamayelInternal Medicine Physician1730496381
  3. Freda Agyemang, NURSE PRACTITIONERFamily Nurse Practitioner1134733280
  4. Hajrah AhsanHospitalist Physician1497367395
  5. Padmastuti Akella, MDCritical Care Medicine (Internal Medicine) Physician1467988873
  6. Ibragim Al-Seykal, M.D.Student in an Organized Health Care Education/Training Program1730615261

Verify Elizabeth J. Keegan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license 2310
    Check 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
Find the Massachusetts license search

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65% fewer Medicare Part D claims than the average physician assistant in 2024

288 Medicare Part D claims for 71 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.

  1. Elizabeth Keegan288
  2. Specialty average830

Most prescribed

  1. Levothyroxine Sodium34 claims
  2. Glipizide Er15 claims
  3. Metformin Hcl Er14 claims
  4. Metformin Hcl13 claims
  5. Insulin Lispro12 claims
  6. Potassium Chloride12 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.

Industry payments in 2024: $765.92

50 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Elizabeth Keegan$765.92
  2. Specialty average$841.65

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Robert P Castellucci MDRichmond, VA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

425 physician assistant records list a practice address in Worcester

They are 425 of the 13,166 NPPES records with a practice address in Worcester, and 4,713 physician assistant records in Massachusetts.

Other physician assistant records in Massachusetts

  1. Erin Abdallah, PA-CSwansea, MA1396417242
  2. Alexa Aboshar, PA-CTewksbury, MA1245623578
  3. Bhraana Abraham, PABoston, MA1649963661
  4. Keidelyn Abreu, PALawrence, MA1497488795
  5. Tatiana Achildiev, PAWorcester, MA1740532761
  6. Sophie Achilles, PA-CBoston, MA1992485965
  7. Andrea Acosta, PA-CWest Roxbury, MA1336060953
  8. Colin ActonBoston, MA1346066701
  9. Emily Adams, PA-CBurlington, MA1457685752
  10. Karley Adams, PABoston, MA1578261764

Common questions

What is Elizabeth J. Keegan, PA-C's NPI number?

Elizabeth J. Keegan, PA-C's National Provider Identifier (NPI) is 1508066937, issued on Jul 24, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Elizabeth J. Keegan, PA-C located?

The NPPES record lists a practice address at 123 Summer St, Worcester, MA, 01608. Phone: (508) 368-3179. Providers update this record themselves, so call before visiting.

How can I verify Elizabeth J. Keegan, PA-C's license?

NPPES lists Massachusetts license number 2310, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Elizabeth J. Keegan, PA-C prescribe under Medicare Part D?

In 2024, Elizabeth J. Keegan, PA-C had 288 Medicare Part D claims for 71 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.