Mark Boonyasampant, M.D.
NPI 1396037537 · Anatomic Pathology & Clinical Pathology Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Boonyasampant, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Fullerton, CA (NPI 1396037537).
Provider details
- NPI number
- 1396037537
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A126158 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,882 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 1,031 | $38 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 525 | $29 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 204 | $36 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 160 | $12 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 125 | $12 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 123 | $82 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$392 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-06
- Last updated
- 2022-07-21
Frequently asked questions
- What is Mark Boonyasampant's NPI number?
- Mark Boonyasampant's National Provider Identifier (NPI) is 1396037537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Boonyasampant's specialty?
- Mark Boonyasampant is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Boonyasampant located?
- Mark Boonyasampant's practice location on file with NPPES is 101 E Valencia Mesa Dr, Fullerton, CA 92835-3809.
- What is Mark Boonyasampant's phone number?
- The practice phone number listed in the NPPES registry for Mark Boonyasampant is (510) 388-7271.
- Does Mark Boonyasampant accept Medicare?
- Mark Boonyasampant is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Boonyasampant's NPI active?
- Yes — Mark Boonyasampant's NPI (1396037537) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.