NPPES file of Aug 9, 2026

Mark Boonyasampant, M.D.

Anatomic Pathology & Clinical Pathology Physician · Fullerton, CA

Mark Boonyasampant, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Fullerton, California, and NPI 1396037537, issued on May 6, 2011. Check the license (California A126158, 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
1396037537
Name
Mark Boonyasampant
Credential
M.D.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
A126158 CA
Self-reported in NPPES; status is on the state search
Practice location
101 E Valencia Mesa Dr, Fullerton, CA 92835
Phone
(510) 388-7271
Enumerated
May 6, 2011
Record last updated
Jul 21, 2022
Fax
(714) 446-7546
Medicare enrollment
Enrolled (PECOS I20170919000867); accepts Medicare assignment
Medical or professional school
New York Medical College, 2011
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 101 E Valencia Mesa Dr

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

  1. Daniel Abbott, MDEmergency Medicine Physician1518907864
  2. Nelson Aguinaga, RN, FNPFamily Nurse Practitioner1043909609
  3. Jonathon Ahn, MDAnesthesiology Physician1053803882
  4. Sora Ahn, RNCritical Care Medicine Registered Nurse1730026493
  5. Sherry Ansari, DPTPhysical Medicine & Rehabilitation Physician1467972992
  6. Tandeep Bains, PHARM.D.Pharmacist1568958114

Verify Mark Boonyasampant in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A126158
    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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Industry payments in 2024: $391.71

3 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 2,607 providers of this specialty with any payment received $3,565.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Boonyasampant$391.71
  2. Specialty average$3,565.00

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. The Pathology Group IncFullerton, CA

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

Mark Boonyasampant among 1,554 anatomic pathology & clinical pathology physician records in California

Mark Boonyasampant, M.D. is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 70% of them.

  • NPI issued2011 · 70% of these records are older, 27% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2011 · median 2003 among the 891 with a school on file
  • Record last updated2022 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in California

There are 1,554 anatomic pathology & clinical pathology physician records in California.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. John Craig, M.D.Fullerton, CA 928351538112206
  2. Patrick Fitzgibbons, M.D.Fullerton, CA 928351568415743
  3. Sandhya John, M.D.Fullerton, CA 928351528402427
  4. Aditya Kuwadekar, M.D.Fullerton, CA 928351790139285
  5. Jay Packer, M.D.Fullerton, CA 928351821033150
  6. Antony Chen, DOGarden Grove, CA 928431235327701
  7. Si Nguyen, M.D.Garden Grove, CA 928431841234952
  8. David Huebner-Chan, MDAnaheim, CA 928071134290190

Common questions

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

Mark Boonyasampant, M.D.'s National Provider Identifier (NPI) is 1396037537, issued on May 6, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Mark Boonyasampant, M.D. located?

The NPPES record lists a practice address at 101 E Valencia Mesa Dr, Fullerton, CA, 92835. Phone: (510) 388-7271. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number A126158, 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. 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.