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Geriatric Psychiatry

David A. Merrill, MD

Sees patients in Santa Monica, CA · Los Angeles, CA · California

Summary

David A. Merrill, MD (Geriatric Psychiatry) is enrolled with Medicare at 4 practice locations in Santa Monica, CA and Los Angeles, CA. NPI 1902923410. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(310) 582‑7641 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about David A. Merrill, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

4Practice locations
Geriatric PsychiatryPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
22Years since medical school (graduated 2004)
University Of California, San Diego School Of MedicineMedical school
MaleGender (as listed)
Providence Saint Johns Medical FoundationGroup practice (+1 more)

Quick answers

Where does David A. Merrill see patients?
Medicare's clinician data lists 4 practice locations, including Santa Monica, CA and Los Angeles, CA. Call before your visit to confirm the address.
What is David A. Merrill's specialty?
Medicare lists Geriatric Psychiatry as the primary specialty.
Does David A. Merrill accept Medicare assignment?
Yes. Medicare's clinician data says David A. Merrill accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does David A. Merrill offer telehealth?
Medicare's clinician data says David A. Merrill offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for David A. Merrill?
(310) 582-7641, as listed in official Medicare / NPI Registry data.
What is David A. Merrill's NPI number?
1902923410. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where David A. Merrill is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists David A. Merrill as a member of these groups (CMS data updated 2026-10-02).

  • Providence Saint Johns Medical Foundation281 clinicians in the group
  • UC Regents152 clinicians in the group

Specialties

Find other Geriatric Psychiatry doctors in California →

Other geriatric psychiatrists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All geriatric psychiatrists in California →

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Diego School Of Medicine
Graduation year2004
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1902923410
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians