Jessica A. Macwilliams, PAC
Physician Assistant · Agawam, MA
Jessica A. Macwilliams, PAC is a physician assistant with a practice address in Agawam, Massachusetts, and NPI 1578663001, issued on Sep 24, 2006. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jessica A. Macwilliams
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 002204 CT
Self-reported in NPPES; status is on the state search - Practice location
- 200 Silver St Unit 106, Agawam, MA 01001
- Phone
- (413) 341-5350
- Enumerated
- Sep 24, 2006
- Record last updated
- Apr 13, 2026
- Fax
- (413) 341-5335
- Medicare enrollment
- Enrolled (PECOS I20051019000483); may accept Medicare assignment
- Entity
- Type 1 · individual
Also registered at 200 Silver St Unit 106
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Harmony Hopkins, NPFamily Nurse Practitioner1922522895
- Zoe Jacobson, PA-CMedical Physician Assistant1568285716
- Melanie Koumentakos, PA CPhysician Assistant1295925956
- Christopher Rumplik, PA-CPhysician Assistant1144847286
Verify Jessica A. Macwilliams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% more Medicare Part D claims than the average physician assistant in 2024
884 Medicare Part D claims for 332 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Triamcinolone Acetonide97 claims
- Betamethasone Dipropionate67 claims
- Tacrolimus54 claims
- Minoxidil44 claims
- Ketoconazole42 claims
- Metronidazole39 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: $4,083.74
177 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
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
- Hillside Dermatology PCAgawam, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
8 physician assistant records list a practice address in Agawam
They are 8 of the 233 NPPES records with a practice address in Agawam, and 4,713 physician assistant records in Massachusetts.
All 8 in Agawam → All 4,713 in Massachusetts → Every provider in Agawam →
Other physician assistant records in Massachusetts
- Erin Abdallah, PA-CSwansea, MA1396417242
- Alexa Aboshar, PA-CTewksbury, MA1245623578
- Bhraana Abraham, PABoston, MA1649963661
- Keidelyn Abreu, PALawrence, MA1497488795
- Tatiana Achildiev, PAWorcester, MA1740532761
- Sophie Achilles, PA-CBoston, MA1992485965
- Andrea Acosta, PA-CWest Roxbury, MA1336060953
- Colin ActonBoston, MA1346066701
- Emily Adams, PA-CBurlington, MA1457685752
- Karley Adams, PABoston, MA1578261764
Common questions
What is Jessica A. Macwilliams, PAC's NPI number?
Jessica A. Macwilliams, PAC's National Provider Identifier (NPI) is 1578663001, issued on Sep 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jessica A. Macwilliams, PAC located?
The NPPES record lists a practice address at 200 Silver St Unit 106, Agawam, MA, 01001. Phone: (413) 341-5350. Providers update this record themselves, so call before visiting.
How can I verify Jessica A. Macwilliams, PAC's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Jessica A. Macwilliams, PAC prescribe under Medicare Part D?
In 2024, Jessica A. Macwilliams, PAC had 884 Medicare Part D claims for 332 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.