NPPES file of Aug 9, 2026

Sarah Cahill, P.A.-C

Physician Assistant · Boston, MA

Sarah Cahill, P.A.-C is a physician assistant with a practice address in Boston, Massachusetts, and NPI 1750668695, issued on Nov 7, 2011. Check the license (Massachusetts PA4275, 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
1750668695
Name
Sarah Cahill
Credential
P.A.-C
Primary taxonomy
Physician Assistant 363A00000X
License number
PA4275 MA
Self-reported in NPPES; status is on the state search
Practice location
450 Brookline Ave, Boston, MA 02115
Phone
(617) 780-5438
Enumerated
Nov 7, 2011
Record last updated
Nov 7, 2011 (not updated in 15 years: call before relying on the address or phone)
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 450 Brookline Ave

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

  1. Gregory Abel, MDHematology & Oncology Physician1285611954
  2. Lara Abousamra, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1851183404
  3. Karley Adams, PAPhysician Assistant1578261764
  4. Lauren Adams, PA-CPhysician Assistant1902763469
  5. Ana Aguilar-Bonilla, M.D.Pediatric Hematology & Oncology Physician1023319761
  6. Andrew Aguirre, MD, PHDMedical Oncology Physician1609071208

Verify Sarah Cahill 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 PA4275
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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50% fewer Medicare Part D claims than the average physician assistant in 2024

419 Medicare Part D claims for 207 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.

  1. Sarah Cahill419
  2. Specialty average830

Most prescribed

  1. Letrozole83 claims
  2. Tamoxifen Citrate47 claims
  3. Anastrozole41 claims
  4. Eliquis33 claims
  5. Exemestane27 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.

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.

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 Sarah Cahill, P.A.-C's NPI number?

Sarah Cahill, P.A.-C's National Provider Identifier (NPI) is 1750668695, issued on Nov 7, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Sarah Cahill, P.A.-C located?

The NPPES record lists a practice address at 450 Brookline Ave, Boston, MA, 02115. Phone: (617) 780-5438. Providers update this record themselves, so call before visiting.

How can I verify Sarah Cahill, P.A.-C's license?

NPPES lists Massachusetts license number PA4275, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Sarah Cahill, P.A.-C prescribe under Medicare Part D?

In 2024, Sarah Cahill, P.A.-C had 419 Medicare Part D claims for 207 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.