Manuel Andres Guillen, M.D.
NPI 1871819219ActiveIndividual· Psychiatry & Neurology, Psychiatry· Lubbock, TX
Psychiatry & Neurology, Psychiatry (M.D.) with Ajinder S. Dhatt, MD, P.A., practicing in Lubbock, Texas. Their prescriptions cost Medicare Part D more than their services did: $39,201 for 305 claims, against $5,386 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $1,327 in all, mostly food and beverage.
Overview
| NPI | 1871819219 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 9, 2010 |
| Last updated in NPPES | May 6, 2026 |
| Certified by provider | May 6, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | R8905 | TX |
| Psychiatry & Neurology, Psychiatry | 2084P0800X | 342931 | NY |
| Psychiatry & Neurology, Psychiatry | 2084P0800X | E-9508 | AR |
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 (AR); Practitioner - Psychiatry (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 45 across 5 procedure codes |
| Paid by Medicare | $5,386 |
Part D prescriptions in 2024
| Prescriptions (claims) | 305 · 352 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $39,201 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Ajinder S. Dhatt, MD, P.A.Houston, TX · 11 clinicians
Industry payments (Open Payments)
- 2025$1,327 · 73 payments from 15 companies
- 2024$236.83 · 12 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $271.48 | 18 |
| Otsuka America Pharmaceutical, Inc. | $206.74 | 10 |
| Takeda Pharmaceuticals U.S.A., Inc. | $145.14 | 12 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $144.15 | 7 |
| Alkermes, Inc. | $80.14 | 4 |
What the 2025 payments were for
- Food and Beverage$1,318 · 71 payments
- Education$8.93 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 98 psychiatrists in Lubbock · All psychiatrists in Texas