Christopher Wan, MD
Emergency Medicine Physician · Hayward, CA
Christopher Wan, MD is an emergency medicine physician with a practice address in Hayward, California, and NPI 1245346626, issued on Aug 21, 2006. Check the license (California A88069, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Wan
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- A88069 CA
036-108258 IL
Self-reported in NPPES; status is on the state search - Practice location
- 27400 Hesperian Blvd, Hayward, CA 94545
- Phone
- (510) 784-4521
- Enumerated
- Aug 21, 2006
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 27400 Hesperian Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David Anderson, MDInternal Medicine Physician1659459410
- Eric Anderson, MDEmergency Medicine Physician1417035262
- Joel Angel, M.D.Hospitalist Physician1669644571
- Marc Anker, MDObstetrics & Gynecology Physician1376621128
Verify Christopher Wan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A88069Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average emergency medicine physician in 2024
105 Medicare Part D claims for 73 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Oxycodone 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.
Christopher Wan among 7,751 emergency medicine physician records in California
Christopher Wan, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 emergency medicine physician records list a practice address in Hayward
They are 26 of the 3,993 NPPES records with a practice address in Hayward, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Hayward → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Lyn Aborn, MDHayward, CA 945451891873659
- Eric Anderson, MDHayward, CA 945451417035262
- Robert Blum, MDHayward, CA 945451730267592
- Jeremy Graff, M.DHayward, CA 945451669491429
- Shao-I Huang, D.O.Hayward, CA 945451215031455
- Tan Nguyen, M.D.Hayward, CA 945451437173754
- Aaron Pessl, M.D.Hayward, CA 945451063425072
- Lisa Pinsky, MDHayward, CA 945451831277680
Common questions
What is Christopher Wan, MD's NPI number?
Christopher Wan, MD's National Provider Identifier (NPI) is 1245346626, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Wan, MD located?
The NPPES record lists a practice address at 27400 Hesperian Blvd, Hayward, CA, 94545. Phone: (510) 784-4521. Providers update this record themselves, so call before visiting.
How can I verify Christopher Wan, MD's license?
NPPES lists California license number A88069, 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 Christopher Wan, MD prescribe under Medicare Part D?
In 2024, Christopher Wan, MD had 105 Medicare Part D claims for 73 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.