Deepak Mahajan, MD
NPI 1104923994 · Psychiatry Physician · Chester, PA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1104923994
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD419253 (PA)
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
19 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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lurasidone Hcl | 35 |
| Benztropine Mesylate | 28 |
| Haloperidol | 25 |
| Quetiapine Fumarate | 24 |
| Clonazepam | 20 |
| Lamotrigine | 20 |
| Hydroxyzine Pamoate | 17 |
| Paliperidone Palmitatebrand: Invega Sustenna | 16 |
| Escitalopram Oxalate | 15 |
| Prazosin Hcl | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2007-07-08
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.