Peter Ryan Zayac, PA
Surgical Physician Assistant · Pittsfield, MA
Peter Ryan Zayac, PA is a surgical physician assistant with a practice address in Pittsfield, Massachusetts, and NPI 1477075968, issued on Jul 17, 2017. Check the license (Massachusetts PA6162, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Peter Ryan Zayac
- Credential
- PA
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License number
- PA6162 MA
Self-reported in NPPES; status is on the state search - Practice location
- 24 Park St, Pittsfield, MA 01201
- Phone
- (413) 499-6600
- Enumerated
- Jul 17, 2017
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20171018000661); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 516 in Massachusetts → Look up another NPI →
Also registered at 24 Park St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ilana Berti, PA-CSurgical Physician Assistant1699309104
- Jessica Bilsky, PAPhysician Assistant1124869219
- Matthew DewolfOrthopaedic Surgery Physician1306265343
- Jessica Eddy, DPTPhysical Therapist1215640982
- David Grygier, M.D.Pain Medicine (Physical Medicine & Rehabilitation) Physician1821090119
- Emily McWhirtPhysical Therapist1902573124
Verify Peter Ryan Zayac in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA6162Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average surgical physician assistant in 2024
139 Medicare Part D claims for 75 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 66 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen33 claims
- Diclofenac Sodium28 claims
- Hydrocodone-Acetaminophen13 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: $38.03
2 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. The 7,578 providers of this specialty with any payment received $703.95 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 2 group practices
- Berkshire Orthopaedic Associates IncPittsfield, MA
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter Ryan Zayac among 516 surgical physician assistant records in Massachusetts
Peter Ryan Zayac, PA 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 2017, is newer than 66% of them.
- NPI issued2017 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2017 · median 2014 among the 357 with a school on file
- Record last updated2022 · 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.
All 516 in Massachusetts → Every provider in Pittsfield → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Laurie Bartling, PAPittsfield, MA 012011053506998
- Ilana Berti, PA-CPittsfield, MA 012011699309104
- Thomas William Ong S Chan, PA-STUDENTPittsfield, MA 012011710641964
- Nicholas Coman, PA-CPittsfield, MA 012011952085953
- Renee Isaacs, PA-CPittsfield, MA 012011609501113
- Joseph Kotelnicki, PA-CPittsfield, MA 012011255669552
- James O'Brien, PA-CPittsfield, MA 012011245485572
- Laurieann Quiry, PHYSICIAN ASSISTANTPittsfield, MA 012011356823694
Common questions
What is Peter Ryan Zayac, PA's NPI number?
Peter Ryan Zayac, PA's National Provider Identifier (NPI) is 1477075968, issued on Jul 17, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Peter Ryan Zayac, PA located?
The NPPES record lists a practice address at 24 Park St, Pittsfield, MA, 01201. Phone: (413) 499-6600. Providers update this record themselves, so call before visiting.
How can I verify Peter Ryan Zayac, PA's license?
NPPES lists Massachusetts license number PA6162, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Peter Ryan Zayac, PA prescribe under Medicare Part D?
In 2024, Peter Ryan Zayac, PA had 139 Medicare Part D claims for 75 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.