Madeline Yung
NPI 1285098707 · Ophthalmology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Madeline Yung is a Ophthalmology Physician provider in San Francisco, CA (NPI 1285098707).
Provider details
- NPI number
- 1285098707
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- General Acute Care Hospital282N00000X
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
703 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 Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 90 | $129 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 75 | $36 |
| Imaging of Retina92134 | 64 | $38 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 59 | $663 |
| Complex Removal of Cataract With Insertion of Prosthetic Lens66982 | 55 | $873 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
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 |
|---|---|---|
| Prednisolone Acetate | 101 | 62 |
| Ketorolac Tromethamine | 99 | 63 |
| Erythromycin Basebrand: Erythromycin | 46 | 23 |
| Latanoprost | 46 | 15 |
| Moxifloxacin Hclbrand: Moxifloxacin | 45 | 25 |
| Fluorometholone | 36 | 15 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 31 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$355 across 3 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
Additional practice locations (1)
- 10301 Nick WayElk Grove, CA 95757-5974Phone: (925) 858-2755
Registry dates
- Enumerated
- 2016-04-11
- Last updated
- 2021-08-06
- Certified
- 2021-08-06
Frequently asked questions
- What is Madeline Yung's NPI number?
- Madeline Yung's National Provider Identifier (NPI) is 1285098707, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Madeline Yung's specialty?
- Madeline Yung is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Madeline Yung located?
- Madeline Yung's practice location on file with NPPES is 1001 Potrero Avenue, Bldg. 5, 4m, San Francisco, CA 94110.
- What is Madeline Yung's phone number?
- The practice phone number listed in the NPPES registry for Madeline Yung is (628) 206-8304.
- Does Madeline Yung accept Medicare?
- Madeline Yung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Madeline Yung's NPI active?
- Yes — Madeline Yung's NPI (1285098707) is active in the NPPES registry as of the last update on 2021-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.