Gregory Zink, O.D.
NPI 1144232794 · Optometrist · Fort Wayne, IN
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Zink, O.D. is a Optometrist provider in Fort Wayne, IN (NPI 1144232794).
Provider details
- NPI number
- 1144232794
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 18002715A (IN)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,684 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 757 | $87 |
| Imaging of Retina92134 | 244 | $37 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 182 | $106 |
| Imaging of Optic Nerve92133 | 119 | $32 |
| Exam of Visual Field With Extended Testing92083 | 110 | $57 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 103 | $122 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 244 | 75 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 126 | 43 |
| Prednisolone Acetate | 66 | 58 |
| Erythromycin Basebrand: Erythromycin | 58 | 50 |
| Bimatoprostbrand: Lumigan | 51 | 12 |
| Brimonidine Tartrate | 45 | 19 |
| Ofloxacin | 42 | 40 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$113 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-12
- Last updated
- 2011-01-06
Frequently asked questions
- What is Gregory Zink's NPI number?
- Gregory Zink's National Provider Identifier (NPI) is 1144232794, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Zink's specialty?
- Gregory Zink is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Gregory Zink located?
- Gregory Zink's practice location on file with NPPES is 321 E Wayne St, Fort Wayne, IN 46802-2713.
- What is Gregory Zink's phone number?
- The practice phone number listed in the NPPES registry for Gregory Zink is (260) 424-5656.
- Does Gregory Zink accept Medicare?
- Gregory Zink is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Zink's NPI active?
- Yes — Gregory Zink's NPI (1144232794) is active in the NPPES registry as of the last update on 2011-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.