Zachary Bay
Family Medicine Physician · Worcester, MA
Zachary Bay is a family medicine physician with a practice address in Worcester, Massachusetts, and NPI 1568801397, issued on Jun 14, 2013. Check the license (Massachusetts 270700, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Zachary Bay
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 270700 MA
Self-reported in NPPES; status is on the state search - Practice location
- 19 Tacoma St, Worcester, MA 01605
- Phone
- (508) 852-1805
- Enumerated
- Jun 14, 2013
- Record last updated
- Jul 21, 2022
- Fax
- (508) 854-3248
- Medicare enrollment
- Enrolled (PECOS I20170831002544); may accept Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2013
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 19 Tacoma St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ama Ahenkorah, FNPFamily Nurse Practitioner1952553232
- Ali Aji, BDSGeneral Practice Dentistry1073145637
- Fior Alba, RNRegistered Nurse1932704921
Verify Zachary Bay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 270700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% more Medicare Part D claims than the average family medicine physician in 2024
4,973 Medicare Part D claims for 183 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 111 claims were for opioids.
Most prescribed
- Atorvastatin Calcium293 claims
- Lisinopril234 claims
- Amlodipine Besylate187 claims
- Gabapentin178 claims
- Biktarvy148 claims
- Losartan Potassium148 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.
Bills Medicare through 2 group practices
- Edward M Kennedy Community Health Center IncWorcester, MA
- Family Health Center OF Worcester, Inc.Worcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Bay among 2,265 family medicine physician records in Massachusetts
Zachary Bay is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2013 · median 2006 among the 1,529 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
168 family medicine physician records list a practice address in Worcester
They are 168 of the 13,166 NPPES records with a practice address in Worcester, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Worcester → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ronald Adler, M.D.Worcester, MA 016051083697841
- Katharine Barnard, M.D.Worcester, MA 016051326023425
- James Broadhurst, M.D.Worcester, MA 016051457334351
- Gina D'Ottavio, M.D.Worcester, MA 016051114902038
- Michael Ennis, M.D.Worcester, MA 016051861482663
- Gerald Gleich, M.D.Worcester, MA 016051962485722
- Jeremy Golding, M.D.Worcester, MA 016051407838378
- Lisa Gordon, MDWorcester, MA 016051861478984
Common questions
What is Zachary Bay's NPI number?
Zachary Bay's National Provider Identifier (NPI) is 1568801397, issued on Jun 14, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Bay located?
The NPPES record lists a practice address at 19 Tacoma St, Worcester, MA, 01605. Phone: (508) 852-1805. Providers update this record themselves, so call before visiting.
How can I verify Zachary Bay's license?
NPPES lists Massachusetts license number 270700, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Zachary Bay prescribe under Medicare Part D?
In 2024, Zachary Bay had 4,973 Medicare Part D claims for 183 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.