Stephen M. Popkin, M.D.
NPI 1326004797ActiveIndividual· Psychiatry & Neurology, Psychiatry· Denver, CO
Psychiatry & Neurology, Psychiatry (M.D.) in Denver, Colorado, trained at Northwestern University Feinberg Medical School (class of 1978). Their prescriptions cost Medicare Part D more than their services did: $200,269 for 1,283 claims, against $42,563 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 12 companies reporting payments in 2025, $444.51 in all, mostly food and beverage.
Overview
| NPI | 1326004797 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 25, 2006 |
| Last updated in NPPES | Sep 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 22521 | CO |
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 - Psychiatry (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 52 |
|---|---|
| Services billed | 539 across 10 procedure codes |
| Paid by Medicare | $42,563 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,283 · 2,267 30-day fills |
|---|---|
| Patients | 76 |
| Total drug cost | $200,269 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$444.51 · 20 payments from 12 companies
- 2024$801.18 · 31 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $77.36 | 3 |
| Lundbeck LLC | $61.50 | 3 |
| Abbvie Inc. | $61.06 | 3 |
| Takeda Pharmaceuticals U.S.A., Inc. | $53.16 | 2 |
| E.R. Squibb & Sons, L.L.C. | $37.12 | 2 |
What the 2025 payments were for
- Food and Beverage$444.51 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 373 psychiatrists in Denver · All psychiatrists in Colorado