Tiffany Shearn Johnson, PA
NPI 1588603591ActiveIndividual· Physician Assistant, Medical· Chesapeake, VA
Physician Assistant, Medical (PA) with Alpha Psychiatric Services LLC, practicing in Chesapeake, Virginia. Their prescriptions cost Medicare Part D more than their services did: $418,512 for 882 claims, against $7,939 paid for services in 2024. Baxter Healthcare was the largest of 14 companies reporting payments in 2025, $1,006 in all, mostly food and beverage.
Overview
| NPI | 1588603591 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | Yes |
| NPI issued | Jun 5, 2006 |
| Last updated in NPPES | Sep 1, 2026 |
| Certified by provider | Sep 1, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 0110003577 | VA |
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 - Physician Assistant (NC); Practitioner - Physician Assistant (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 25 |
|---|---|
| Services billed | 134 across 5 procedure codes |
| Paid by Medicare | $7,939 |
Part D prescriptions in 2024
| Prescriptions (claims) | 882 · 1,264 30-day fills |
|---|---|
| Patients | 50 |
| Total drug cost | $418,512 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Alpha Psychiatric Services LLCChesapeake, VA · 6 clinicians
Industry payments (Open Payments)
- 2025$1,006 · 37 payments from 14 companies
- 2024$1,220 · 52 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Baxter Healthcare | $159.92 | 1 |
| Axsome Therapeutics, Inc. | $159.14 | 4 |
| Alkermes, Inc. | $156.98 | 8 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $90.80 | 4 |
| Teva Pharmaceuticals USA, Inc. | $85.40 | 5 |
What the 2025 payments were for
- Food and Beverage$1,006 · 37 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 physician assistants in Chesapeake · All physician assistants in Virginia