Mark Peters Foster, M.D.
Family Medicine Physician · Laguna Hills, CA
Mark Peters Foster, M.D. is a family medicine physician with a practice address in Laguna Hills, California, and NPI 1548338908, issued on Dec 1, 2006. Check the license (California A85216, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Peters Foster
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A85216 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24411 Health Center Dr, Laguna Hills, CA 92653
- Phone
- (949) 373-7799
- Enumerated
- Dec 1, 2006
- Record last updated
- Nov 16, 2025
- Fax
- (949) 334-8377
- Medicare enrollment
- Enrolled (PECOS I20050719000734); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 24411 Health Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Peters Foster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A85216Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% more Medicare Part D claims than the average family medicine physician in 2024
6,272 Medicare Part D claims for 671 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 32 claims were for opioids.
Most prescribed
- Atorvastatin Calcium514 claims
- Amlodipine Besylate303 claims
- Levothyroxine Sodium285 claims
- Simvastatin235 claims
- Hydrochlorothiazide224 claims
- Lisinopril212 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.
The MIPS final score for 2023 (Medicare payment program): 61.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Healthcare Partners Affiliates Medical GroupLaguna Hills, CA
- Saddleback Medical Group IncLaguna Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Peters Foster among 17,133 family medicine physician records in California
Mark Peters Foster, 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. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2002 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 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).
36 family medicine physician records list a practice address in Laguna Hills
They are 36 of the 2,069 NPPES records with a practice address in Laguna Hills, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Laguna Hills → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Connor, MDLaguna Hills, CA 926531578536553
- Bernard Elpedes, DOLaguna Hills, CA 926531831127497
- Chee Ho, D.O.Laguna Hills, CA 926531609820083
- Judy Huynh, D.O.Laguna Hills, CA 926531316934284
- Henry Leung, D.O.Laguna Hills, CA 926531881662690
- Martin Louie, M.D.Laguna Hills, CA 926531770519621
- Lisa Majer, D.OLaguna Hills, CA 926531003990748
- Suchitra Mohindra, MDLaguna Hills, CA 926531306828363
Common questions
What is Mark Peters Foster, M.D.'s NPI number?
Mark Peters Foster, M.D.'s National Provider Identifier (NPI) is 1548338908, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Peters Foster, M.D. located?
The NPPES record lists a practice address at 24411 Health Center Dr, Laguna Hills, CA, 92653. Phone: (949) 373-7799. Providers update this record themselves, so call before visiting.
How can I verify Mark Peters Foster, M.D.'s license?
NPPES lists California license number A85216, 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 Mark Peters Foster, M.D. prescribe under Medicare Part D?
In 2024, Mark Peters Foster, M.D. had 6,272 Medicare Part D claims for 671 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Mark Peters Foster, M.D.'s MIPS final score?
The 2023 MIPS final score is 61.5 of 100. 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.