Nickoles Mahaffey, M.D.
NPI 1386842037 · Psychiatry Physician · Downey, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1386842037
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A106747 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 183 | 58 |
| Lorazepam | 158 | 32 |
| Quetiapine Fumarate | 106 | 25 |
| Bupropion Hclbrand: Bupropion Xl | 79 | 27 |
| Sertraline Hcl | 76 | 35 |
| Mirtazapine | 72 | 29 |
| Fluoxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-04
- Last updated
- 2021-12-06
- Certified
- 2021-08-22
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.