NPPES file of Aug 9, 2026

Michael Kao, M.D.

Family Medicine Physician · Costa Mesa, CA

Michael Kao, M.D. is a family medicine physician with a practice address in Costa Mesa, California, and NPI 1316953805, issued on Aug 1, 2006. Check the license (California A51885, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1316953805
Name
Michael Kao
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A51885 CA
Self-reported in NPPES; status is on the state search
Practice location
2501 Harbor Blvd, Costa Mesa, CA 92626
Phone
(714) 957-5000
Enumerated
Aug 1, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 2501 Harbor Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ronald Bangsil, MDFamily Medicine Physician1043261654
  2. De Bui, MDGeneral Practice Physician1619929551
  3. Ying-Ling ChaoClinical Social Worker1861655045
  4. Beverly Corona, LCSWClinical Social Worker1811497027
  5. Thanhtuyen Do, MDPhysical Medicine & Rehabilitation Physician1760404040
  6. James Ferguson, DOFamily Medicine Physician1689625212

Verify Michael Kao in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A51885    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Michael Kao among 17,133 family medicine physician records in California

Michael Kao, M.D. is one of 17,133 family 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 not. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2007 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

56 family medicine physician records list a practice address in Costa Mesa

They are 56 of the 4,286 NPPES records with a practice address in Costa Mesa, and 17,133 family medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 17,133 in California → Every provider in Costa Mesa → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Ronald Bangsil, MDCosta Mesa, CA 926261043261654
  2. David Chun, MDCosta Mesa, CA 926261932199213
  3. James Ferguson, DOCosta Mesa, CA 926261689625212
  4. Sienna Go, M.D.Costa Mesa, CA 926261295759298
  5. Guy Gottschalk, M.D.Costa Mesa, CA 926261235228750
  6. Joseph Horejsi, MDCosta Mesa, CA 926261295726347
  7. Ena Kariya, MDCosta Mesa, CA 926261588655658
  8. Peter Kim, M.D.Costa Mesa, CA 926261609815224

Common questions

What is Michael Kao, M.D.'s NPI number?

Michael Kao, M.D.'s National Provider Identifier (NPI) is 1316953805, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael Kao, M.D. located?

The NPPES record lists a practice address at 2501 Harbor Blvd, Costa Mesa, CA, 92626. Phone: (714) 957-5000. Providers update this record themselves, so call before visiting.

How can I verify Michael Kao, M.D.'s license?

NPPES lists California license number A51885, 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.