Gregory Cowan, MD
NPI 1275640716 · Ophthalmology Physician · Bethpage, NY
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Cowan, MD is a Ophthalmology Physician provider in Bethpage, NY (NPI 1275640716).
Provider details
- NPI number
- 1275640716
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 178691 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
3,521 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 | 905 | $104 |
| Exam of Visual Field With Extended Testing92083 | 651 | $73 |
| Imaging of Optic Nerve92133 | 464 | $39 |
| Photography of the Retina92250 | 345 | $40 |
| Exam of the Internal Drainage System of Eye92020 | 338 | $31 |
| Established Patient Complete Exam of Visual System92014 | 270 | $142 |
| Established Patient Problem Focused Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 184 | 55 |
| Brimonidine Tartrate | 130 | 40 |
| Timolol Maleate | 119 | 41 |
| Bimatoprostbrand: Lumigan | 99 | 32 |
| Prednisolone Acetate | 97 | 84 |
| Travoprost | 95 | 34 |
| Brinzolamide/Brimonidine Tartbrand: Simbrinza | 86 | 25 |
| Dorzolamide Hcl/Timolol Maleat |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,003 across 45 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
- 2006-08-23
- Last updated
- 2008-05-01
Frequently asked questions
- What is Gregory Cowan's NPI number?
- Gregory Cowan's National Provider Identifier (NPI) is 1275640716, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Cowan's specialty?
- Gregory Cowan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Cowan located?
- Gregory Cowan's practice location on file with NPPES is 4277 Hempstead Tpke, Bethpage, NY 11714.
- What is Gregory Cowan's phone number?
- The practice phone number listed in the NPPES registry for Gregory Cowan is (516) 796-4030.
- Does Gregory Cowan accept Medicare?
- Gregory Cowan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Cowan's NPI active?
- Yes — Gregory Cowan's NPI (1275640716) is active in the NPPES registry as of the last update on 2008-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.