Christina Ryu, M.D.
NPI 1518491158 · Endocrinology, Diabetes & Metabolism Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Ryu, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in San Francisco, CA (NPI 1518491158).
Provider details
- NPI number
- 1518491158
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 12229699 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 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
667 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 | 249 | $153 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 228 | $19 |
| Hemoglobin A1c Level83036 | 64 | $10 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 50 | $39 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 30 | $259 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 187 | 41 |
| Levothyroxine Sodium | 103 | 28 |
| Atorvastatin Calcium | 71 | 29 |
| Empagliflozinbrand: Jardiance | 54 | 18 |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 54 | 23 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 43 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 across 1 record (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)
- 1580 Valencia St Ste 802San Francisco, CA 94110-4415Phone: (415) 641-2198Fax: (415) 865-4189
Registry dates
- Enumerated
- 2017-04-19
- Last updated
- 2022-07-19
- Certified
- 2022-07-19
Frequently asked questions
- What is Christina Ryu's NPI number?
- Christina Ryu's National Provider Identifier (NPI) is 1518491158, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Ryu's specialty?
- Christina Ryu is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Christina Ryu located?
- Christina Ryu's practice location on file with NPPES is 1100 Van Ness Ave, San Francisco, CA 94109-6978.
- What is Christina Ryu's phone number?
- The practice phone number listed in the NPPES registry for Christina Ryu is (415) 600-0110.
- Does Christina Ryu accept Medicare?
- Christina Ryu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Ryu's NPI active?
- Yes — Christina Ryu's NPI (1518491158) is active in the NPPES registry as of the last update on 2022-07-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.