O Gregory Zazulak, MD
Ophthalmology Physician · Rochester, NY
O Gregory Zazulak, MD is an ophthalmology physician with a practice address in Rochester, New York, and NPI 1902986938, issued on Oct 16, 2006. Check the license (New York 1788711, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- O Gregory Zazulak
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 1788711 NY
Self-reported in NPPES; status is on the state search - Practice location
- 890 Westfall RD, Rochester, NY 14618
- Phone
- (585) 473-6700
- Enumerated
- Oct 16, 2006
- Record last updated
- Jun 22, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (585) 473-1497
- Medicaid ID
- 01356014 NY
- Medicare enrollment
- Enrolled (PECOS I20050318000853); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,822 in New York → Look up another NPI →
Also registered at 890 Westfall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify O Gregory Zazulak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 1788711Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% more Medicare Part D claims than the average ophthalmology physician in 2024
2,572 Medicare Part D claims for 367 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Latanoprost775 claims
- Timolol Maleate340 claims
- Brimonidine Tartrate153 claims
- Prednisolone Acetate148 claims
- Tobramycin-Dexamethasone132 claims
- Lumigan105 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: $1,352.75
45 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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.
O Gregory Zazulak among 1,822 ophthalmology physician records in New York
O Gregory Zazulak, MD is one of 1,822 ophthalmology physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1988 · median 1995 among the 1,215 with a school on file
- Record last updated2010 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in New York
There are 1,822 ophthalmology physician records in New York.
All 1,822 in New York → Every provider in Rochester → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Dennis Asselin, MDRochester, NY 146181669431268
- Dinesh Chawla, MDRochester, NY 146181336151620
- Sara Ferri, MDRochester, NY 146181548423908
- Andrew Goodfriend, M.D.Rochester, NY 146181154399624
- Alan Gruber, MDRochester, NY 146181356345839
- Paul Hartman, MDRochester, NY 146181447254917
- Robert Olsen, MDRochester, NY 146181508826579
- Howard Schenker, M.D.Rochester, NY 146181346244811
Common questions
What is O Gregory Zazulak, MD's NPI number?
O Gregory Zazulak, MD's National Provider Identifier (NPI) is 1902986938, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is O Gregory Zazulak, MD located?
The NPPES record lists a practice address at 890 Westfall RD, Rochester, NY, 14618. Phone: (585) 473-6700. Providers update this record themselves, so call before visiting.
How can I verify O Gregory Zazulak, MD's license?
NPPES lists New York license number 1788711, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does O Gregory Zazulak, MD prescribe under Medicare Part D?
In 2024, O Gregory Zazulak, MD had 2,572 Medicare Part D claims for 367 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.