David Tai-Way Chan, MD
Internal Medicine Physician · Santa Rosa, CA
David Tai-Way Chan, MD is an internal medicine physician with a practice address in Santa Rosa, California, and NPI 1972132546, issued on Apr 6, 2020. Check the license (California A195359, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Tai-Way Chan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A195359 CA
Self-reported in NPPES; status is on the state search - Practice location
- 401 Bicentennial Way, Santa Rosa, CA 95403
- Phone
- (707) 393-4000
- Enumerated
- Apr 6, 2020
- Record last updated
- Jan 15, 2026
- Medicare enrollment
- Enrolled (PECOS I20241017002836); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 401 Bicentennial Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Ackerman, RNRegistered Nurse1376409409
- Patricia AdamsPhysical Therapist1124971825
- Hugo Aguilar, PHARMDPharmacist1992389134
- Heather Aiello, OTR/LOccupational Therapist1851155022
- Sandra Akrawi, REGISTERED DIETITIANRegistered Dietitian1790821031
- Miguel Alcala, LCSWClinical Social Worker1629857891
Verify David Tai-Way Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A195359Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
230 Medicare Part D claims for 96 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil23 claims
- Furosemide17 claims
- Doxycycline Monohydrate13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Tai-Way Chan among 17,696 internal medicine physician records in California
David Tai-Way Chan, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
98 internal medicine physician records list a practice address in Santa Rosa
They are 98 of the 6,884 NPPES records with a practice address in Santa Rosa, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Rosa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Harry Carr, M.D.Santa Rosa, CA 954031770694044
- William Carroll, M.D.Santa Rosa, CA 954031922005891
- Lawrence Cooper, M.D.Santa Rosa, CA 954031801895602
- Zhen Zhou Feng, M.D.Santa Rosa, CA 954031871600031
- Timothy Gieseke, M.D.Santa Rosa, CA 954031992703706
- Archana Goyal, M.D.Santa Rosa, CA 954031811084817
- Parul Kohli, M.D.Santa Rosa, CA 954031023098738
- Maya Land, MDSanta Rosa, CA 954031619958154
Common questions
What is David Tai-Way Chan, MD's NPI number?
David Tai-Way Chan, MD's National Provider Identifier (NPI) is 1972132546, issued on Apr 6, 2020. An NPI identifies a provider in billing; it is not a license.
Where is David Tai-Way Chan, MD located?
The NPPES record lists a practice address at 401 Bicentennial Way, Santa Rosa, CA, 95403. Phone: (707) 393-4000. Providers update this record themselves, so call before visiting.
How can I verify David Tai-Way Chan, MD's license?
NPPES lists California license number A195359, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Tai-Way Chan, MD prescribe under Medicare Part D?
In 2024, David Tai-Way Chan, MD had 230 Medicare Part D claims for 96 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.