Courtney Wen-Lun Tam, MD
Pediatrics Physician · Walnut Creek, CA
Courtney Wen-Lun Tam, MD is a pediatrics physician with a practice address in Walnut Creek, California, and NPI 1306475256, issued on Apr 3, 2020. Check the license (California PTL5462, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Courtney Wen-Lun Tam
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- PTL5462 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1425 S Main St, Walnut Creek, CA 94596
- Phone
- (925) 295-4000
- Enumerated
- Apr 3, 2020
- Record last updated
- Feb 3, 2024
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 1425 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Courtney Wen-Lun Tam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license PTL5462Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $26.15
1 payment: food and beverage; the largest payer was Chiesi USA, Inc. The 21,580 providers of this specialty with any payment received $842.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Courtney Wen-Lun Tam among 9,272 pediatrics physician records in California
Courtney Wen-Lun Tam, MD is one of 9,272 pediatrics physician records with a practice address in California. 31% 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 91% of them.
- NPI issued2020 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2024 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
57 pediatrics physician records list a practice address in Walnut Creek
They are 57 of the 6,170 NPPES records with a practice address in Walnut Creek, and 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in Walnut Creek → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Katharine Brown, M.D.Walnut Creek, CA 945961962456707
- S. Ming Chang, M.D.Walnut Creek, CA 945961114996618
- Cristina Chua-Lim, MDWalnut Creek, CA 945961487765756
- Steven Dinstell, MDWalnut Creek, CA 945961659459717
- Cathy Dugan, MDWalnut Creek, CA 945961003994591
- Kirk Hahn, MDWalnut Creek, CA 945961952489015
- Charles Hanson, M.D.Walnut Creek, CA 945961245243567
- Dorothy Hassler, MDWalnut Creek, CA 945961992883078
Common questions
What is Courtney Wen-Lun Tam, MD's NPI number?
Courtney Wen-Lun Tam, MD's National Provider Identifier (NPI) is 1306475256, issued on Apr 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Courtney Wen-Lun Tam, MD located?
The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.
How can I verify Courtney Wen-Lun Tam, MD's license?
NPPES lists California license number PTL5462, 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.
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.