Lillian Yang, MD
NPI 1871855411 · Ophthalmology Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lillian Yang, MD is a Ophthalmology Physician provider in Santa Rosa, CA (NPI 1871855411).
Provider details
- NPI number
- 1871855411
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 94-07887 (KS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 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
2,918 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 | 405 | $146 |
| Established Patient Problem Focused Exam of Visual System92012 | 394 | $104 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 307 | $144 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 292 | $47 |
| Imaging of Optic Nerve92133 | 266 | $39 |
| Exam of Visual Field With Extended Testing92083 | 261 | $75 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 439 | 138 |
| Prednisolone Acetate | 302 | 190 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 148 | 51 |
| Timolol Maleate | 114 | 46 |
| Brimonidine Tartrate | 107 | 36 |
| Cyclosporinebrand: Restasis | 58 | 33 |
| Cyclosporinebrand: Cequa | 47 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$227 across 9 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
- 2012-06-11
- Last updated
- 2025-07-21
- Certified
- 2025-07-21
Frequently asked questions
- What is Lillian Yang's NPI number?
- Lillian Yang's National Provider Identifier (NPI) is 1871855411, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lillian Yang's specialty?
- Lillian Yang is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Lillian Yang located?
- Lillian Yang's practice location on file with NPPES is 3035 Cleveland Ave Ste 100, Santa Rosa, CA 95403-2122.
- What is Lillian Yang's phone number?
- The practice phone number listed in the NPPES registry for Lillian Yang is (707) 546-9800.
- Does Lillian Yang accept Medicare?
- Lillian Yang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lillian Yang's NPI active?
- Yes — Lillian Yang's NPI (1871855411) is active in the NPPES registry as of the last update on 2025-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.