O Gregory Zazulak, MD, PC
NPI 1366611709 · Ophthalmology Physician · Rochester, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
O Gregory Zazulak, MD, PC is a Ophthalmology Physician organization in Rochester, NY (NPI 1366611709).
Provider details
- NPI number
- 1366611709
- Entity type
- Organization
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Oleh Zazulak, President(585) 473-6700
- License
- 178871 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Finger Lakes Eye Care
Registry dates
- Enumerated
- 2008-02-28
- Last updated
- 2010-02-16
Frequently asked questions
- What is O Gregory Zazulak, MD, PC's NPI number?
- O Gregory Zazulak, MD, PC's National Provider Identifier (NPI) is 1366611709, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is O Gregory Zazulak, MD, PC?
- O Gregory Zazulak, MD, PC is classified in the NPPES registry as Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is O Gregory Zazulak, MD, PC located?
- O Gregory Zazulak, MD, PC's practice location on file with NPPES is 890 Westfall Rd, Rochester, NY 14618-2610.
- What is O Gregory Zazulak, MD, PC's phone number?
- The practice phone number listed in the NPPES registry for O Gregory Zazulak, MD, PC is (585) 473-6700.
- Does O Gregory Zazulak, MD, PC accept Medicare?
- O Gregory Zazulak, MD, PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for O Gregory Zazulak, MD, PC?
- The authorized official listed on O Gregory Zazulak, MD, PC's NPPES record is Oleh Zazulak, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is O Gregory Zazulak, MD, PC's NPI active?
- Yes — O Gregory Zazulak, MD, PC's NPI (1366611709) is active in the NPPES registry as of the last update on 2010-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.