Dolly Chang, MD
NPI 1437577186 · Ophthalmology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dolly Chang, MD is a Ophthalmology Physician provider in Stanford, CA (NPI 1437577186).
Provider details
- NPI number
- 1437577186
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A155914 (CA)
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
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
76 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 Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 38 | $75 |
| Imaging of Optic Nerve92133 | 21 | $25 |
| Exam of Visual Field With Extended Testing92083 | 17 | $31 |
Typical Medicare-allowed amounts for these services range $25–$75 (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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 47 | 17 |
| Dorzolamide/Timolol/Pfbrand: Dorzolamide-Timolol | 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 (3)
- 2452 Watson CtPalo Alto, CA 94303-3216Phone: (650) 723-4000
- 6565 N Charles StSte 203Baltimore, MD 21204-6800Phone: (443) 849-3760Fax: (443) 849-8138
- 6565 N Charles StSte 203Baltimore, MD 21204-6800Phone: (443) 849-3760Fax: (443) 849-8138
Registry dates
- Enumerated
- 2014-03-31
- Last updated
- 2024-03-18
- Certified
- 2024-03-18
Frequently asked questions
- What is Dolly Chang's NPI number?
- Dolly Chang's National Provider Identifier (NPI) is 1437577186, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dolly Chang's specialty?
- Dolly Chang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Dolly Chang located?
- Dolly Chang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Dolly Chang's phone number?
- The practice phone number listed in the NPPES registry for Dolly Chang is (650) 723-4000.
- Does Dolly Chang accept Medicare?
- Dolly Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dolly Chang's NPI active?
- Yes — Dolly Chang's NPI (1437577186) is active in the NPPES registry as of the last update on 2024-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.