Sophia Chen, M.D.
NPI 1033183934 · Ophthalmology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sophia Chen, M.D. is a Ophthalmology Physician provider in Oakland, CA (NPI 1033183934).
Provider details
- NPI number
- 1033183934
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A82768 (CA)
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
20 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
4,174 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 | 1,047 | $166 |
| Imaging of Optic Nerve92133 | 709 | $43 |
| Exam of Visual Field With Extended Testing92083 | 704 | $86 |
| New Patient Complete Exam of Visual System92004 | 301 | $193 |
| Photography of the Retina92250 | 277 | $49 |
| Ultrasound Scan to Determine Eye Length and Lens Power76519 | 215 | $55 |
| Ct Scan of Cornea92025 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,041 | 348 |
| Bimatoprostbrand: Lumigan | 370 | 118 |
| Prednisolone Acetate | 339 | 212 |
| Ciprofloxacin Hcl | 323 | 208 |
| Flurbiprofen Sodium | 303 | 198 |
| Lifitegrastbrand: Xiidra | 217 | 116 |
| Dorzolamide Hcl | 180 | 47 |
| Timolol Maleate | 167 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$929 across 40 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
- 2006-02-15
- Last updated
- 2022-08-15
- Certified
- 2022-08-15
Frequently asked questions
- What is Sophia Chen's NPI number?
- Sophia Chen's National Provider Identifier (NPI) is 1033183934, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sophia Chen's specialty?
- Sophia Chen is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Sophia Chen located?
- Sophia Chen's practice location on file with NPPES is 345 9th St, Oakland, CA 94607-6522.
- What is Sophia Chen's phone number?
- The practice phone number listed in the NPPES registry for Sophia Chen is (510) 350-8741.
- Does Sophia Chen accept Medicare?
- Sophia Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sophia Chen's NPI active?
- Yes — Sophia Chen's NPI (1033183934) is active in the NPPES registry as of the last update on 2022-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.