Susan Ryu, MD
NPI 1346359270 · Ophthalmology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Ryu, MD is a Ophthalmology Physician provider in Stanford, CA (NPI 1346359270).
Provider details
- NPI number
- 1346359270
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G41683 (CA)
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
504 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 | 261 | $110 |
| Imaging of Optic Nerve92133 | 143 | $25 |
| Exam of Visual Field With Extended Testing92083 | 32 | $31 |
| Imaging of Retina92134 | 19 | $29 |
| Exam of the Internal Drainage System of Eye92020 | 18 | $24 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $75 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 168 | 49 |
| Brimonidine Tartrate | 30 | — |
| Dorzolamide Hcl | 25 | — |
| Erythromycin Basebrand: Erythromycin | 23 | 13 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 19 | — |
| Cyclosporine | 12 | — |
| Brimonidine Tartratebrand: Alphagan P | 12 | — |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$474 across 6 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)
- 795 El Camino RealPalo Alto, CA 94301-2302Phone: (650) 853-2019
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2025-12-05
- Certified
- 2025-12-05
Frequently asked questions
- What is Susan Ryu's NPI number?
- Susan Ryu's National Provider Identifier (NPI) is 1346359270, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Ryu's specialty?
- Susan Ryu is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Ryu located?
- Susan Ryu's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Susan Ryu's phone number?
- The practice phone number listed in the NPPES registry for Susan Ryu is (650) 723-4000.
- Does Susan Ryu accept Medicare?
- Susan Ryu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Ryu's NPI active?
- Yes — Susan Ryu's NPI (1346359270) is active in the NPPES registry as of the last update on 2025-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.