Zhen Zhou Feng, M.D.
NPI 1871600031 · Internal Medicine Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zhen Zhou Feng, M.D. is a Internal Medicine Physician provider in Santa Rosa, CA (NPI 1871600031).
Provider details
- NPI number
- 1871600031
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A100208 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 199 | 100 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 134 | 133 |
| Mesalamine | 41 | 15 |
| Rifaximinbrand: Xifaxan | 38 | 11 |
| Lipase/Protease/Amylasebrand: Zenpep | 33 | 16 |
| Azathioprine | 30 | — |
| Balsalazide Disodium | 26 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2021-12-09
Frequently asked questions
- What is Zhen Zhou Feng's NPI number?
- Zhen Zhou Feng's National Provider Identifier (NPI) is 1871600031, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zhen Zhou Feng's specialty?
- Zhen Zhou Feng is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zhen Zhou Feng located?
- Zhen Zhou Feng's practice location on file with NPPES is 401 Bicentennial Way, Santa Rosa, CA 95403-2149.
- What is Zhen Zhou Feng's phone number?
- The practice phone number listed in the NPPES registry for Zhen Zhou Feng is (707) 571-3621.
- Does Zhen Zhou Feng accept Medicare?
- Zhen Zhou Feng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zhen Zhou Feng's NPI active?
- Yes — Zhen Zhou Feng's NPI (1871600031) 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.