Rebekah Chang, MD
NPI 1518017326 · Internal Medicine Physician · Vallejo, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rebekah Chang, MD is a Internal Medicine Physician provider in Vallejo, CA (NPI 1518017326).
Provider details
- NPI number
- 1518017326
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A83283 (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 · 47 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 222 | 74 |
| Losartan Potassium | 127 | 38 |
| Amlodipine Besylate | 110 | 34 |
| Lisinopril | 105 | 34 |
| Atenolol | 102 | 31 |
| Levothyroxine Sodium | 90 | 28 |
| Hydrochlorothiazide | 84 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-12
- Last updated
- 2021-12-09
Frequently asked questions
- What is Rebekah Chang's NPI number?
- Rebekah Chang's National Provider Identifier (NPI) is 1518017326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rebekah Chang's specialty?
- Rebekah Chang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Rebekah Chang located?
- Rebekah Chang's practice location on file with NPPES is 975 Sereno Dr, Vallejo, CA 94589-2441.
- What is Rebekah Chang's phone number?
- The practice phone number listed in the NPPES registry for Rebekah Chang is (707) 651-1000.
- Does Rebekah Chang accept Medicare?
- Rebekah Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rebekah Chang's NPI active?
- Yes — Rebekah Chang's NPI (1518017326) is active in the NPPES registry as of the last update on 2021-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.