David Arthur Merrill, MD
Psychiatry Physician · Los Angeles, CA
David Arthur Merrill, MD is a psychiatry physician with a practice address in Los Angeles, California, and NPI 1902923410, issued on Mar 22, 2007. Check the license (California A93072, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Arthur Merrill
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A93072 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Ucla Medical Plz Ste 2200, Los Angeles, CA 90095
- Phone
- (310) 825-9989
- Enumerated
- Mar 22, 2007
- Record last updated
- Jul 18, 2024
- Medicaid ID
- 00A930720 CA
- Medicare enrollment
- Enrolled (PECOS I20070522000314); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 300 Ucla Medical Plz Ste 2200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Arthur Merrill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A93072Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average psychiatry physician in 2024
1,799 Medicare Part D claims for 222 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Escitalopram Oxalate150 claims
- Venlafaxine Hcl Er124 claims
- Quetiapine Fumarate108 claims
- Donepezil Hcl95 claims
- Mirtazapine74 claims
- Memantine Hcl73 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $357.57
13 payments; by number, the most common kind was food and beverage; the largest payer was Csl Behring. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Providence Saint Johns Medical FoundationSanta Monica, CA
- UC RegentsLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Arthur Merrill among 8,673 psychiatry physician records in California
David Arthur Merrill, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2004 · median 2005 among the 3,295 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
987 psychiatry physician records list a practice address in Los Angeles
They are 987 of the 69,537 NPPES records with a practice address in Los Angeles, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Los Angeles → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
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- Melita Daley, MDLos Angeles, CA 900951982635058
- Michael Enenbach, MDLos Angeles, CA 900951477583953
- Stephanny Freeman, PHDLos Angeles, CA 900951891732194
- Helen Lavretsky, M.D.Los Angeles, CA 900951881627404
- Patricia Lester, MDLos Angeles, CA 900951760415277
Common questions
What is David Arthur Merrill, MD's NPI number?
David Arthur Merrill, MD's National Provider Identifier (NPI) is 1902923410, issued on Mar 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David Arthur Merrill, MD located?
The NPPES record lists a practice address at 300 Ucla Medical Plz Ste 2200, Los Angeles, CA, 90095. Phone: (310) 825-9989. Providers update this record themselves, so call before visiting.
How can I verify David Arthur Merrill, MD's license?
NPPES lists California license number A93072, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Arthur Merrill, MD prescribe under Medicare Part D?
In 2024, David Arthur Merrill, MD had 1,799 Medicare Part D claims for 222 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.