Mei Y. Chow-Kwan, MD
Internal Medicine Physician · Walnut Creek, CA
Mei Y. Chow-Kwan, MD is an internal medicine physician with a practice address in Walnut Creek, California, and NPI 1689619330, issued on Jun 17, 2006. Check the license (California A50662, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mei Y. Chow-Kwan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A50662 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2621 Shadelands Drive, Walnut Creek, CA 94598
- Phone
- (925) 947-0417
- Enumerated
- Jun 17, 2006
- Record last updated
- Jun 18, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081220000103); 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 2621 Shadelands Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mei Y. Chow-Kwan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A50662Check 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
221 Medicare Part D claims for 117 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate20 claims
- Levothyroxine Sodium20 claims
- Atorvastatin Calcium17 claims
- Metformin Hcl11 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
- Asian Health ServicesOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mei Y. Chow-Kwan among 17,696 internal medicine physician records in California
Mei Y. Chow-Kwan, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1986 · median 2004 among the 11,065 with a school on file
- Record last updated2015 · 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).
183 internal medicine physician records list a practice address in Walnut Creek
They are 183 of the 6,170 NPPES records with a practice address in Walnut Creek, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Walnut Creek → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Anthony Bernens, MDWalnut Creek, CA 945981215983440
- Martin Braker, M.D.Walnut Creek, CA 945981922050095
- Lisa Craig, MDWalnut Creek, CA 945981699853754
- Jaya Francis, MDWalnut Creek, CA 945981962580548
- Tarannum Guller, MDWalnut Creek, CA 945981972532083
- Noushin Haddad-Tehrani, MDWalnut Creek, CA 945981215988878
- Waheeda Hiller, MDWalnut Creek, CA 945981689642233
- Maeve O'Regan, MDWalnut Creek, CA 945981871535203
Common questions
What is Mei Y. Chow-Kwan, MD's NPI number?
Mei Y. Chow-Kwan, MD's National Provider Identifier (NPI) is 1689619330, issued on Jun 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mei Y. Chow-Kwan, MD located?
The NPPES record lists a practice address at 2621 Shadelands Drive, Walnut Creek, CA, 94598. Phone: (925) 947-0417. Providers update this record themselves, so call before visiting.
How can I verify Mei Y. Chow-Kwan, MD's license?
NPPES lists California license number A50662, 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 Mei Y. Chow-Kwan, MD prescribe under Medicare Part D?
In 2024, Mei Y. Chow-Kwan, MD had 221 Medicare Part D claims for 117 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.