Nagui Achamallah, M.D.
NPI 1629057393ActiveIndividual· Psychiatry & Neurology, Psychiatry· Modesto, CA
Psychiatry & Neurology, Psychiatry (M.D.) with Southern California Permanente Medical Group and 2 other groups, practicing in Modesto, California. 82 Medicare patients in 2024, $13,815 paid; nearly all of their 181 Part D prescriptions were generic (99%). Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1629057393 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 11, 2006 |
| Last updated in NPPES | Dec 13, 2021 |
| Certified by provider | Aug 12, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | A48988 | CA |
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 | 82 |
|---|---|
| Services billed | 104 across 7 procedure codes |
| Paid by Medicare | $13,815 |
Part D prescriptions in 2024
| Prescriptions (claims) | 181 · 442 30-day fills |
|---|---|
| Patients | 35 |
| Total drug cost | $2,870 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 1977 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical groups
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
- Cep America - Psychiatry PCWalnut Creek, CA · 93 clinicians
- Alliance for Wellness IncPanorama City, CA · 56 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- St Johns Regional Medical CenterOxnard, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 66 psychiatrists in Modesto · All psychiatrists in California