John Nichalos Kamphaus, M.D.
NPI 1013924257ActiveIndividual· Psychiatry & Neurology, Psychiatry· Plano, TX
Psychiatry & Neurology, Psychiatry (M.D.) in Plano, Texas, trained at University of Oklahoma College of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $44,700 for 782 claims, against $20,216 paid for services in 2024. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $482.68 in all, mostly food and beverage.
Overview
| NPI | 1013924257 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 1, 2006 |
| Last updated in NPPES | Sep 3, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | H1717 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Psychiatry (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 43 |
|---|---|
| Services billed | 295 across 6 procedure codes |
| Paid by Medicare | $20,216 |
Part D prescriptions in 2024
| Prescriptions (claims) | 782 · 1,258 30-day fills |
|---|---|
| Patients | 84 |
| Total drug cost | $44,700 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Geode Health of Texas, PLLCMansfield, TX · 175 clinicians
Industry payments (Open Payments)
- 2025$482.68 · 28 payments from 10 companies
- 2024$449.33 · 27 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $159.07 | 10 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $79.10 | 4 |
| Neurocrine Biosciences, Inc. | $70.02 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $56.62 | 3 |
| Otsuka America Pharmaceutical, Inc. | $35.55 | 2 |
What the 2025 payments were for
- Food and Beverage$482.68 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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