NPPES file of Aug 9, 2026

Mark Steven Foster, M.D

Family Medicine Physician · Banning, CA

Mark Steven Foster, M.D is a family medicine physician with a practice address in Banning, California, and NPI 1336189042, issued on Jun 8, 2006. Check the license (California A61041, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336189042
Name
Mark Steven Foster
Credential
M.D
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A61041 CA
Self-reported in NPPES; status is on the state search
Practice location
600 N Highland Springs Avenue, Banning, CA 92220
Phone
(951) 845-1121
Enumerated
Jun 8, 2006
Record last updated
Jul 13, 2026
Medicare enrollment
Enrolled (PECOS I20230801001763); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 1995
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. 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 600 N Highland Springs Avenue

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

  1. Ludwig Cibelli, M.DEmergency Medicine Physician1437198025
  2. Brian Gordon, M.DEmergency Medicine Physician1093755043
  3. Edward Messmer, P.A-CPhysician Assistant1225078769
  4. Marcos Palafox, M.DEmergency Medicine Physician1083654834

Verify Mark Steven Foster in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A61041    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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72% fewer Medicare Part D claims than the average family medicine physician in 2024

975 Medicare Part D claims for 729 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 31 claims were for opioids.

  1. Mark Foster975
  2. Specialty average3,544

Most prescribed

  1. Ibuprofen152 claims
  2. Azithromycin137 claims
  3. Cefdinir113 claims
  4. Doxycycline Hyclate54 claims
  5. Prednisone49 claims
  6. Meloxicam38 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.

Industry payments in 2024: $18.17

1 payment: food and beverage; the largest payer was Pfizer Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Foster$18.17
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Desert Medical Group IncPalm Springs, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Steven Foster among 17,133 family medicine physician records in California

Mark Steven 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
  • Graduated1995 · median 2005 among the 10,652 with a school on file
  • Record last updated2026 · 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).

25 family medicine physician records list a practice address in Banning

They are 25 of the 515 NPPES records with a practice address in Banning, and 17,133 family medicine physician records in California.

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

The 8 family medicine physician records with the nearest ZIP codes

  1. Kim Bennett, P.A.Banning, CA 922201992733141
  2. Irada Dalili, M.D.Banning, CA 922201528092459
  3. Karen Davis, MDBanning, CA 922201396759346
  4. Howard Green, MDBanning, CA 922201851330674
  5. Frederick Lloyd, MDBanning, CA 922201528053303
  6. Arnold Magbanua, M.D.Banning, CA 922201831203439
  7. Michael Kenneth Mindoro, M.D.Banning, CA 922201801974845
  8. Michael Oliverio, M.D.Banning, CA 922201063591915

Common questions

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

Mark Steven Foster, M.D's National Provider Identifier (NPI) is 1336189042, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Steven Foster, M.D located?

The NPPES record lists a practice address at 600 N Highland Springs Avenue, Banning, CA, 92220. Phone: (951) 845-1121. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number A61041, 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 Steven Foster, M.D prescribe under Medicare Part D?

In 2024, Mark Steven Foster, M.D had 975 Medicare Part D claims for 729 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.