Mark Ghassibi, MD
NPI 1356871230 · Retina Specialist (Ophthalmology) Physician · New York, NY
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Ghassibi, MD is a Retina Specialist (Ophthalmology) Physician provider in New York, NY (NPI 1356871230).
Provider details
- NPI number
- 1356871230
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 311158 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
32 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 Complete Exam of Visual System92014 | 32 | $80 |
Typical Medicare-allowed amounts for these services range $80–$80 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 271 | 72 |
| Brimonidine Tartrate | 174 | 50 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 125 | 47 |
| Prednisolone Acetate | 84 | 43 |
| Netarsudil Mesylatebrand: Rhopressa | 56 | 13 |
| Ketorolac Tromethamine | 54 | 19 |
| Brinzolamide/Brimonidine Tartbrand: Simbrinza | 33 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$57 across 2 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
Additional practice locations (1)
- 1111 Amsterdam AveNew York, NY 10025-1716Phone: (212) 523-4000
Registry dates
- Enumerated
- 2017-06-14
- Last updated
- 2023-10-11
- Certified
- 2023-10-11
Frequently asked questions
- What is Mark Ghassibi's NPI number?
- Mark Ghassibi's National Provider Identifier (NPI) is 1356871230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Ghassibi's specialty?
- Mark Ghassibi is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Ghassibi located?
- Mark Ghassibi's practice location on file with NPPES is 1000 10th Ave, New York, NY 10019-1147.
- What is Mark Ghassibi's phone number?
- The practice phone number listed in the NPPES registry for Mark Ghassibi is (212) 523-4000.
- Does Mark Ghassibi accept Medicare?
- Mark Ghassibi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Ghassibi's NPI active?
- Yes — Mark Ghassibi's NPI (1356871230) is active in the NPPES registry as of the last update on 2023-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.