Gregory Taylor Michas, D.O.
NPI 1285039651ActiveIndividual· Psychiatry & Neurology, Psychiatry· Walnut Creek, CA
Psychiatry & Neurology, Psychiatry (D.O.) with Comprehensive Psychiatric Services A Medical Group, practicing in Walnut Creek, California. Their prescriptions cost Medicare Part D more than their services did: $381,907 for 3,466 claims, against $178,110 paid for services in 2024. Supernus Pharmaceuticals, Inc. was the largest of 3 companies reporting payments in 2025, $56.34 in all, mostly food and beverage.
Overview
| NPI | 1285039651 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Oct 28, 2014 |
| Last updated in NPPES | Aug 26, 2021 |
| Certified by provider | Aug 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 20A15586 | CA |
| Psychiatry & Neurology, Psychiatry | 2084P0800X | U03533 | FL |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 173 |
|---|---|
| Services billed | 2,115 across 7 procedure codes |
| Paid by Medicare | $178,110 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,466 · 6,753 30-day fills |
|---|---|
| Patients | 221 |
| Total drug cost | $381,907 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Comprehensive Psychiatric Services A Medical GroupWalnut Creek, CA · 76 clinicians
Industry payments (Open Payments)
- 2025$56.34 · 3 payments from 3 companies
- 2024$43.94 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Supernus Pharmaceuticals, Inc. | $21.86 | 1 |
| Abbvie Inc. | $18.66 | 1 |
| Indivior Inc. | $15.82 | 1 |
What the 2025 payments were for
- Food and Beverage$56.34 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 78 psychiatrists in Walnut Creek · All psychiatrists in California