David Merrill, MD
NPI 1902923410 · Psychiatry Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Geriatric Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Merrill, MD is a Psychiatry Physician provider in Los Angeles, CA (NPI 1902923410).
Provider details
- NPI number
- 1902923410
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A93072 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,245 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 1,000 | $76 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 802 | $139 |
| Psychiatric Services Complicated By Communication Factor90785 | 370 | $15 |
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Subsequent Delivery and Management90868 | 343 | $132 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 316 | $195 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician Or |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Escitalopram Oxalate | 150 | 50 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 124 | 23 |
| Quetiapine Fumarate | 108 | 18 |
| Donepezil Hcl | 95 | 32 |
| Mirtazapine | 74 | 22 |
| Memantine Hcl | 73 | 21 |
| Trazodone Hcl | 72 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$358 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1301 20th St Ste 150Santa Monica, CA 90404-2050Phone: (310) 582-7641Fax: (310) 315-4069
Registry dates
- Enumerated
- 2007-03-22
- Last updated
- 2024-07-18
- Certified
- 2024-07-18
Frequently asked questions
- What is David Merrill's NPI number?
- David Merrill's National Provider Identifier (NPI) is 1902923410, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Merrill's specialty?
- David Merrill is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is David Merrill located?
- David Merrill's practice location on file with NPPES is 300 Ucla Medical Plz Ste 2200, Los Angeles, CA 90095-2050.
- What is David Merrill's phone number?
- The practice phone number listed in the NPPES registry for David Merrill is (310) 825-9989.
- Does David Merrill accept Medicare?
- David Merrill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Merrill's NPI active?
- Yes — David Merrill's NPI (1902923410) is active in the NPPES registry as of the last update on 2024-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.