Grace Sun, MD
NPI 1134387756 · Ophthalmology Physician · New York, NY
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Sun, MD is a Ophthalmology Physician provider in New York, NY (NPI 1134387756).
Provider details
- NPI number
- 1134387756
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 241583 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,439 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 312 | $146 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 133 | $18 |
| Photography of the Retina92250 | 126 | $43 |
| Extended Exam of the Back Part of the Eye With Retinal Drawing92201 | 119 | $28 |
| Imaging of Optic Nerve92133 | 108 | $41 |
| Imaging of Retina92134 | 102 | $47 |
| Exam of Visual Field With Extended Testing92083 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Latanoprost | 24 |
| Cyclosporinebrand: Restasis | 17 |
| Timolol Maleate | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 156 William StNew York, NY 10038-2609Phone: (646) 962-2020
- 36 Worth StNew York, NY 10013-2903Phone: (646) 962-2020
Registry dates
- Enumerated
- 2008-05-30
- Last updated
- 2023-10-23
- Certified
- 2023-10-23
Frequently asked questions
- What is Grace Sun's NPI number?
- Grace Sun's National Provider Identifier (NPI) is 1134387756, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Sun's specialty?
- Grace Sun is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Sun located?
- Grace Sun's practice location on file with NPPES is 1305 York Ave, New York, NY 10021-5663.
- What is Grace Sun's phone number?
- The practice phone number listed in the NPPES registry for Grace Sun is (212) 312-5074.
- Does Grace Sun accept Medicare?
- Grace Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Sun's NPI active?
- Yes — Grace Sun's NPI (1134387756) is active in the NPPES registry as of the last update on 2023-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.