Suyi Chang, MD
NPI 1972681468 · Gastroenterology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Suyi Chang, MD is a Gastroenterology Physician provider in Walnut Creek, CA (NPI 1972681468).
Provider details
- NPI number
- 1972681468
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A73603 (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 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 110 | 110 |
| Omeprazole | 32 | 14 |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 27 | — |
| Rifaximinbrand: Xifaxan | 20 | — |
| Mesalamine | 20 | — |
| Adalimumab-Attobrand: Amjevita(cf) Autoinjector | 20 | — |
| Rabeprazole Sodium | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is Suyi Chang's NPI number?
- Suyi Chang's National Provider Identifier (NPI) is 1972681468, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Suyi Chang's specialty?
- Suyi Chang is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Suyi Chang located?
- Suyi Chang's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is Suyi Chang's phone number?
- The practice phone number listed in the NPPES registry for Suyi Chang is (925) 295-4000.
- Does Suyi Chang accept Medicare?
- Suyi Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Suyi Chang's NPI active?
- Yes — Suyi Chang's NPI (1972681468) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.