Josephine Chang
NPI 1225606254 · Nurse Practitioner · San Francisco, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Josephine Chang is a Nurse Practitioner provider in San Francisco, CA (NPI 1225606254).
Provider details
- NPI number
- 1225606254
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 95062617 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 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
154 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 42 | $43 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 39 | $75 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $72 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 25 | $106 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 18 | $34 |
Typical Medicare-allowed amounts for these services range $34–$106 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Aripiprazole | 104 | 13 |
| Risperidone | 81 | 13 |
| Trazodone Hcl | 71 | 12 |
| Olanzapine | 65 | — |
| Escitalopram Oxalate | 54 | — |
| Duloxetine Hcl | 54 | — |
| Bupropion Hclbrand: Bupropion Xl | 39 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-06-15
- Last updated
- 2026-01-28
- Certified
- 2026-01-28
Frequently asked questions
- What is Josephine Chang's NPI number?
- Josephine Chang's National Provider Identifier (NPI) is 1225606254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Josephine Chang's specialty?
- Josephine Chang is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Josephine Chang located?
- Josephine Chang's practice location on file with NPPES is 601 Clement St, San Francisco, CA 94118-2206.
- What is Josephine Chang's phone number?
- The practice phone number listed in the NPPES registry for Josephine Chang is (415) 668-5955.
- Does Josephine Chang accept Medicare?
- Josephine Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Josephine Chang's NPI active?
- Yes — Josephine Chang's NPI (1225606254) is active in the NPPES registry as of the last update on 2026-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.