Diane Chang, M.D., PH.D.
NPI 1588826168 · Ophthalmology Physician · New York, NY
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Chang, M.D., PH.D. is a Ophthalmology Physician provider in New York, NY (NPI 1588826168).
Provider details
- NPI number
- 1588826168
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MT193100 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
3,323 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 | 679 | $125 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 628 | $127 |
| Photography of the Retina92250 | 430 | $36 |
| Imaging of Retina92134 | 325 | $39 |
| Exam of Visual Field With Extended Testing92083 | 269 | $62 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 224 | $40 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 379 | 107 |
| Timolol Maleate | 80 | 26 |
| Brimonidine Tartrate | 50 | 17 |
| Prednisolone Acetate | 43 | 34 |
| Cyclosporinebrand: Restasis | 29 | 13 |
| Lifitegrastbrand: Xiidra | 21 | — |
| Moxifloxacin Hclbrand: Moxifloxacin | 20 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$315 across 13 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
- 2008-06-25
- Last updated
- 2015-07-01
Frequently asked questions
- What is Diane Chang's NPI number?
- Diane Chang's National Provider Identifier (NPI) is 1588826168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Chang's specialty?
- Diane Chang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Diane Chang located?
- Diane Chang's practice location on file with NPPES is 70 E 10th St Apt 1f, New York, NY 10003-5105.
- What is Diane Chang's phone number?
- The practice phone number listed in the NPPES registry for Diane Chang is (212) 673-5650.
- Does Diane Chang accept Medicare?
- Diane Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Chang's NPI active?
- Yes — Diane Chang's NPI (1588826168) is active in the NPPES registry as of the last update on 2015-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.