Mark Alan Zaydman, MD
NPI 1588017842ActiveIndividual· Pathology, Clinical Pathology· Saint Louis, MO
Pathology, Clinical Pathology (MD) in Saint Louis, Missouri, trained at Washington University School of Medicine (class of 2016). Medicare paid $20,038 for services to 723 patients in 2024.
Overview
| NPI | 1588017842 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 21, 2016 |
| Last updated in NPPES | Apr 17, 2025 |
| Certified by provider | Nov 23, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pathology, Clinical Pathology Primary | 207ZC0006X | 2021030731 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pathology (IL); Practitioner - Pathology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 723 |
|---|---|
| Services billed | 1,638 across 4 procedure codes |
| Paid by Medicare | $20,038 |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Pathology |
Medical group
- Washington UniversitySaint Louis, MO · 3,029 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Decatur Memorial HospitalDecatur, IL
- Memorial HospitalBelleville, IL
- Mercy Hospital St LouisSaint Louis, MO
- Parkland Health CenterFarmington, MO
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 Pathology, Clinical Pathology providers in Saint Louis · All Pathology, Clinical Pathology providers in Missouri