Stacy Han
NPI 1225665938 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stacy Han is a Internal Medicine Physician provider in San Francisco, CA (NPI 1225665938).
Provider details
- NPI number
- 1225665938
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 185378 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
67 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 36 | $210 |
| Residence Visit for New Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 75 Minutes99345 | 19 | $229 |
| Administration of Influenza Virus VaccineG0008 | 12 | $39 |
Typical Medicare-allowed amounts for these services range $39–$229 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-24
- Last updated
- 2023-07-09
- Certified
- 2023-07-09
Frequently asked questions
- What is Stacy Han's NPI number?
- Stacy Han's National Provider Identifier (NPI) is 1225665938, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stacy Han's specialty?
- Stacy Han is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stacy Han located?
- Stacy Han's practice location on file with NPPES is 490 Illinois St Fl 8, San Francisco, CA 94143-2510.
- What is Stacy Han's phone number?
- The practice phone number listed in the NPPES registry for Stacy Han is (415) 476-1000.
- Does Stacy Han accept Medicare?
- Stacy Han is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stacy Han's NPI active?
- Yes — Stacy Han's NPI (1225665938) is active in the NPPES registry as of the last update on 2023-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.