NPPES file of Aug 9, 2026

Mark Jason, M.D

Specialist · Laguna Hills, CA

Mark Jason, M.D is a specialist with a practice address in Laguna Hills, California, and NPI 1629179536, issued on Sep 25, 2006. Check the license (California G37528, as entered in NPPES) with the California board that licenses this profession; 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
1629179536
Name
Mark Jason
Credential
M.D
Primary taxonomy
Specialist 174400000X
License number
G37528 CA
Self-reported in NPPES; status is on the state search
Practice location
25411 Cabot RD, Laguna Hills, CA 92653
Phone
(949) 364-5119
Enumerated
Sep 25, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(949) 364-1265
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 specialist records → All 5,749 in California → Look up another NPI →

Also registered at 25411 Cabot RD

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

  1. Schahrokh Fatehi, D.D.S.Oral and Maxillofacial Surgery (Dentist)1902999576
  2. Jacqueline Hyman, LCSWClinical Social Worker1225055874
  3. Sandra Klonsky, M.F.T.Marriage & Family Therapist1124200084
  4. Sylvia Lane, LCSW, MFTClinical Social Worker1265679237
  5. Leonel MartinezBehavior Technician1881234540
  6. Vitaliy Shaulov, M.D.Psychiatry Physician1699705590

Verify Mark Jason in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license G37528    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
Find the California license search

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Mark Jason among 5,749 specialist records in California

Mark Jason, M.D is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 60% newer
  • In a Medicare fileNo · 30% of these records are
  • In the CMS Doctors and Clinicians fileNo · 19% of these records are
  • Record last updated2007 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in California

There are 5,749 specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 5,749 in California → Every provider in Laguna Hills → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. Nili Alai, M.D.Laguna Hills, CA 926531245326206
  2. Valdemar Ascencio, M.D.Laguna Hills, CA 926531962569384
  3. Henry Bruce, M.D.Laguna Hills, CA 926531114920535
  4. Sandeep Chaudhary, M.DLaguna Hills, CA 926531417055872
  5. Manijeh Javaheri, M.D.Laguna Hills, CA 926531639102387
  6. Kenneth Lynn, M.D.Laguna Hills, CA 926531548280423
  7. M Polly McKinstry, M DLaguna Hills, CA 926531447269501
  8. Susie Rudzik, OTLaguna Hills, CA 926531316097199

Common questions

What is Mark Jason, M.D's NPI number?

Mark Jason, M.D's National Provider Identifier (NPI) is 1629179536, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Jason, M.D located?

The NPPES record lists a practice address at 25411 Cabot RD, Laguna Hills, CA, 92653. Phone: (949) 364-5119. Providers update this record themselves, so call before visiting.

How can I verify Mark Jason, M.D's license?

NPPES lists California license number G37528, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.