Dr. Zhen Zhou Feng, MD
- Part D claims, 2024
- 796
- Hospital affiliations
- 1
- Medical group
- 1
- Insurance carriers
- 2
- State licenses
- 2
- Practice address
- 401 Bicentennial Way, Santa Rosa, CA 95403
- Practice phone
- Call (707) 571-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Feng's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Zhen Zhou Feng is an internist in Santa Rosa, California
Dr. Feng practices at Santa Rosa Medical Center in Santa Rosa, California, part of Kaiser Permanente.
Dr. Feng's NPI, 1871600031, was assigned on August 24, 2006. Dr. Feng graduated from University of Miami, Miller School of Medicine in 2000. Dr. Feng's Michigan license number on file is 4301075723.
- NPI
- 1871600031NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820996408
- NPI enumeration date
- August 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 571-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Zhen Zhou Feng practices at Santa Rosa Medical Center in Santa Rosa, California
Dr. Feng's primary practice is Santa Rosa Medical Center, at 401 Bicentennial Way, Santa Rosa, CA 95403 in Sonoma County. The practice phone is (707) 571-4000.
- Santa Rosa Medical Center401 Bicentennial Way, Santa Rosa, CA 95403 · Sonoma CountyPhone(707) 571-4000
Source: Dmand AI Affiliation Data
Dr. Zhen Zhou Feng is affiliated with 1 site of care and 1 medical group
Dr. Feng's primary practice is Santa Rosa Medical Center in Santa Rosa, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Zhen Zhou Feng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Feng practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Santa Rosa Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zhen Zhou Feng is one of 16,751 internists in California
Internal medicine is Dr. Feng's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Feng is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Feng's licenses on file in 2 states: Michigan and California.
Specialties and state licenses
- Internal medicine, MichiganPrimary
- Gastroenterology, California
Clinical focus
Dmand AI lists colonoscopy and upper GI endoscopy among the conditions Dr. Feng treats.
Internists near Dr. Feng
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Zhen Zhou Feng's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Feng's median patient age at 58, with 62% women.
Dr. Feng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women62%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. Zhen Zhou Feng wrote 796 Medicare Part D claims in 2024
In 2024, Dr. Feng wrote 796 Medicare Part D claims for 365 patients. 81% of them were for generic drugs. CMS names the drug for 664 of them, across 17 drugs with 11 or more claims each, at $309,983 in total drug cost. In 2023, CMS named 639 claims across 21 drugs.
Dr. Feng's Part D claims by kind of drug, 2024
- Generic646 claims81%
- Brand-name150 claims19%
Dr. Feng's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Feng's Part D claims, 2024
- Antibiotics6%48 of 796 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6392024: 6644%
Drugs named by CMS: 17 in 2024, 21 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Zhen Zhou Feng takes part in Medicare
Dr. Feng accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Zhen Zhou Feng graduated from University of Miami, Miller School of Medicine
Dr. Feng graduated from University of Miami, Miller School of Medicine in 2000.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Zhen Zhou Feng accepts plans from 2 insurance carriers
Dr. Feng is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Feng accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Zhen Zhou Feng's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Zhen Zhou Feng
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Zhen Zhou Feng's NPI number?
Dr. Zhen Zhou Feng's NPI number is 1871600031. It was assigned on August 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Zhen Zhou Feng?
Dr. Zhen Zhou Feng is an internist in Santa Rosa, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Zhen Zhou Feng practice?
Dr. Feng practices at 401 Bicentennial Way, Santa Rosa, CA 95403. Dr. Feng's primary practice is Santa Rosa Medical Center in Santa Rosa, California, part of Kaiser Permanente.
What is Dr. Zhen Zhou Feng's office phone number?
The practice phone on file for Dr. Feng is (707) 571-4000.
What is Dr. Zhen Zhou Feng's medical license number?
Dr. Feng's Michigan license number on file is 4301075723, one of the licenses on file in 2 states.
Which states has Dr. Zhen Zhou Feng been licensed in?
Dmand AI has state licenses on file for Dr. Feng in Michigan (2000 to 2010) and California (2007 to 2026).
Which hospitals is Dr. Zhen Zhou Feng affiliated with?
Dr. Feng practices at Santa Rosa Medical Center in Santa Rosa, California.
What medical group is Dr. Zhen Zhou Feng part of?
Dr. Feng is linked to The Permanente Medical Group, Inc.
Does Dr. Zhen Zhou Feng accept Medicare?
Yes. CMS lists Dr. Feng as accepting Medicare assignment.
Is Dr. Zhen Zhou Feng board certified?
Yes. Dr. Feng is board certified in gastroenterology by the American Board of Internal Medicine.
Show 4 more questionsShow fewer questions
Where did Dr. Zhen Zhou Feng go to medical school?
Dr. Feng graduated from University of Miami, Miller School of Medicine in 2000.
What drugs does Dr. Zhen Zhou Feng prescribe most?
In 2024 Medicare Part D data, Dr. Feng's most prescribed drugs by claims were Pantoprazole Sodium, Gavilyte-C and Mesalamine.
How long has Dr. Zhen Zhou Feng been practicing?
Dr. Feng graduated from medical school in 2000, 26 years ago.
What insurance does Dr. Zhen Zhou Feng accept?
Dr. Feng is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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