Sergey L. Istomin, CRNP, PMHNP-BC
NPI 1023384963ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Bethesda, MD
Nurse Practitioner, Psych/Mental Health (CRNP, PMHNP-BC) in Bethesda, Maryland, licensed in MD, with an NPI issued in March 2012. Their prescriptions cost Medicare Part D more than their services did: $435,660 for 1,346 claims, against $24,947 paid for services in 2024.
Overview
| NPI | 1023384963 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP, PMHNP-BC |
| Sole proprietor | No |
| NPI issued | Mar 26, 2012 |
| Last updated in NPPES | Dec 3, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | R208690 | MD |
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 - Nurse Practitioner (DC); Practitioner - Nurse Practitioner (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 177 |
|---|---|
| Services billed | 453 across 11 procedure codes |
| Paid by Medicare | $24,947 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,346 · 1,617 30-day fills |
|---|---|
| Patients | 106 |
| Total drug cost | $435,660 |
| Generic share | 89% of claims |
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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