Taejoon Ahn, M.D.
Family Medicine Physician · Walnut Creek, CA
Taejoon Ahn, M.D. is a family medicine physician with a practice address in Walnut Creek, California, and NPI 1639198757, issued on Jul 19, 2006. Check the license (California A67062, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Taejoon Ahn
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A67062 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1455 Montego, Walnut Creek, CA 94598
- Phone
- (925) 939-4444
- Enumerated
- Jul 19, 2006
- Record last updated
- Jun 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (925) 939-5010
- Medicaid ID
- 00A670620 CA
- Medicare enrollment
- Enrolled (PECOS I20080711000331); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1997
- Entity
- Type 1 · individual
Also registered at 1455 Montego
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Boegel, M.D.Adult Medicine Physician1437277282
- Martin Braker, M.D.Internal Medicine Physician1922050095
- Michelle Minor, RN PNP MNPediatric Nurse Practitioner1669509501
- Daniel Paik, MDGynecologic Oncology Physician1962673046
- John Roberts, MDUrology Physician1861481004
- Katherine Roller, M.D.Family Medicine Physician1093755563
Verify Taejoon Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A67062Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 85.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- John Muir Physician NetworkWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
116 family medicine physician records list a practice address in Walnut Creek
They are 116 of the 6,170 NPPES records with a practice address in Walnut Creek, and 17,133 family medicine physician records in California.
All 116 in Walnut Creek → All 17,133 in California → Every provider in Walnut Creek →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Taejoon Ahn, M.D.'s NPI number?
Taejoon Ahn, M.D.'s National Provider Identifier (NPI) is 1639198757, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Taejoon Ahn, M.D. located?
The NPPES record lists a practice address at 1455 Montego, Walnut Creek, CA, 94598. Phone: (925) 939-4444. Providers update this record themselves, so call before visiting.
How can I verify Taejoon Ahn, M.D.'s license?
NPPES lists California license number A67062, 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.
What is Taejoon Ahn, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.