Stephanie Chang, D.O.
NPI 1740387091 · Family Medicine Physician · San Dimas, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Chang, D.O. is a Family Medicine Physician provider in San Dimas, CA (NPI 1740387091).
Provider details
- NPI number
- 1740387091
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A7055 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 492 | 192 |
| Lisinopril | 336 | 132 |
| Amlodipine Besylate | 290 | 105 |
| Losartan Potassium | 268 | 96 |
| Levothyroxine Sodium | 256 | 100 |
| Rosuvastatin Calcium | 233 | 84 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2021-12-02
Frequently asked questions
- What is Stephanie Chang's NPI number?
- Stephanie Chang's National Provider Identifier (NPI) is 1740387091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Chang's specialty?
- Stephanie Chang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephanie Chang located?
- Stephanie Chang's practice location on file with NPPES is 1255 W Arrow Hwy, San Dimas, CA 91773-2340.
- What is Stephanie Chang's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Chang is (800) 780-1277.
- Does Stephanie Chang accept Medicare?
- Stephanie Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Chang's NPI active?
- Yes — Stephanie Chang's NPI (1740387091) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.