Doctor profile · Federal record
Dr. Mark Zaydman, MD
Clinical Pathology Physician (CMS: Pathology) · Saint Louis, MO
- NPI 1588017842
- Accepts Medicare
- MIPS 79.3 / 100 · 2023
- 10 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1 Barnes Jewish Hospital Plz, Div PA Lab and Genomic MED
Saint Louis, MO 631101003
(314) 362-5641
fax (314) 362-0369 - Mailing address
-
Po Box 7412011
Chicago, IL 606742011
Credentials & registration
- NPI registered
- July 2016 — 10 yrs on file
- Profile last updated
- April 17, 2025
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207ZC0006X — NUCC code
- State license (1)
- Missouri #2021030731
- Medicaid
- MO #200062470
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588017842. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,111
Distinct HCPCS
4
Medicare allowed
$36,109
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
84165 |
Protein measurement, serum | 1,118 | 709 | $17 | |
86334 |
Immunologic analysis technique on serum (immunofixation) | 679 | 491 | $17 | |
86335 |
Immunologic analysis technique on body fluid, other fluids with concentration | 184 | 127 | $17 | |
84166 |
Protein measurement, body fluid | 130 | 79 | $17 |
In context: peer comparison
Among 4 peers in Saint Louis Clinical Pathology Physician, average services per provider: 218. This provider delivers 9.7× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Mark Zaydman's medical specialty?
Dr. Mark Zaydman practices Clinical Pathology Physician in Saint Louis, MO.
Where does Dr. Mark Zaydman practice?
Dr. Mark Zaydman practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 631101003. Office phone: 3143625641.
What is Dr. Mark Zaydman's NPI?
Dr. Mark Zaydman's National Provider Identifier (NPI) is 1588017842, issued by NPPES.
Does Dr. Mark Zaydman accept Medicare assignment?
Yes. Dr. Mark Zaydman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Zaydman commonly perform?
Top Medicare-reported procedures in 2023: Protein measurement, serum (HCPCS 84165); Immunologic analysis technique on serum (immunofixation) (HCPCS 86334); Immunologic analysis technique on body fluid, other fluids with concentration (HCPCS 86335). Source: CMS Medicare Physician & Other Practitioners file.