Ajay Marken, M.D
NPI 1578918223 · Child & Adolescent Psychiatry Physician · Boston, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ajay Marken, M.D is a Child & Adolescent Psychiatry Physician provider in Boston, MA (NPI 1578918223).
Provider details
- NPI number
- 1578918223
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 296534 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Aripiprazole | 22 |
| Prazosin Hcl | 17 |
| Trazodone Hcl | 17 |
| Bupropion Hclbrand: Bupropion Xl | 14 |
| Fluvoxamine Maleate | 14 |
| Escitalopram Oxalate | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 780 Albany StBoston, MA 02118-2755Phone: (857) 654-1000
- 475 Seaview AveStaten Island, NY 10305-3436Phone: (718) 226-5976
Registry dates
- Enumerated
- 2016-05-02
- Last updated
- 2021-07-26
- Certified
- 2021-07-26
Frequently asked questions
- What is Ajay Marken's NPI number?
- Ajay Marken's National Provider Identifier (NPI) is 1578918223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ajay Marken's specialty?
- Ajay Marken is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ajay Marken located?
- Ajay Marken's practice location on file with NPPES is 55 Fruit St # 6a, Boston, MA 02114-2621.
- What is Ajay Marken's phone number?
- The practice phone number listed in the NPPES registry for Ajay Marken is (675) 313-6695.
- Does Ajay Marken accept Medicare?
- Ajay Marken is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ajay Marken's NPI active?
- Yes — Ajay Marken's NPI (1578918223) is active in the NPPES registry as of the last update on 2021-07-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.