NPPES file of Aug 9, 2026

Mark Mounir Halim

Child & Adolescent Psychiatry Physician · Fontana, CA

Mark Mounir Halim is a child & adolescent psychiatry physician with a practice address in Fontana, California, and NPI 1558998542, issued on Mar 27, 2020. Check the license (California A177063, 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
1558998542
Name
Mark Mounir Halim
Primary taxonomy
Child & Adolescent Psychiatry Physician 2084P0804X
License number
A177063 CA
Self-reported in NPPES; status is on the state search
Practice location
17234 Valley Blvd., Fontana, CA 92335
Phone
(661) 998-0424
Enumerated
Mar 27, 2020
Record last updated
Sep 15, 2025
Medicare enrollment
Enrolled (PECOS I20230728002171); accepts Medicare assignment
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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Also registered at 17234 Valley Blvd.

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

  1. Matthew AllenPsychiatry Physician1679216121
  2. Austin Anderson, MDStudent in an Organized Health Care Education/Training Program1669969044
  3. Terrin Arceo, DOPsychiatry Physician1104520485
  4. Rouzbeh DarvishanStudent in an Organized Health Care Education/Training Program1295222768
  5. Marcos Escobar, MDFamily Medicine Physician1821655481
  6. Sheena Ghalla, DOPsychiatry Physician1942903067

Verify Mark Mounir Halim in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A177063
    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

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96% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024

19 Medicare Part D claims, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Mark Halim19
  2. Specialty average504

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: $145.32

1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 1,578 providers of this specialty with any payment received $1,427.96 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Halim$145.32
  2. Specialty average$1,427.96

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. Southern California Permanente Medical GroupOntario, CA

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

Child & Adolescent Psychiatry Physician providers in California

There are 1,009 child & adolescent psychiatry physician records in California.

Other child & adolescent psychiatry physician records in California

  1. Chester Abbott, M.D.Pasadena, CA1053442186
  2. Manar Abdelmegeed, MDSan Jose, CA1699137661
  3. Allan Abrams, M.D.Simi Valley, CA1306844626
  4. Lisa Acosta, MDSimi Valley, CA1497887277
  5. Indira Adapa, M.D.Fresno, CA1588776918
  6. Adeshewa Adekunbi, MDGardena, CA1083134829
  7. Steven Adelsheim, MDPalo Alto, CA1245246941
  8. Victoria AgeeIrvine, CA1659900306
  9. Ujwala Agharkar, MDFremont, CA1073685723
  10. Lielanie Mae Aguilar-Pascasio, M.D.El Centro, CA1356553945

Common questions

What is Mark Mounir Halim's NPI number?

Mark Mounir Halim's National Provider Identifier (NPI) is 1558998542, issued on Mar 27, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Mark Mounir Halim located?

The NPPES record lists a practice address at 17234 Valley Blvd., Fontana, CA, 92335. Phone: (661) 998-0424. Providers update this record themselves, so call before visiting.

How can I verify Mark Mounir Halim's license?

NPPES lists California license number A177063, 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 Mounir Halim prescribe under Medicare Part D?

In 2024, Mark Mounir Halim had 19 Medicare Part D claims; the average among child & adolescent psychiatry physician prescribers was 504. 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.

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.