What is David Merrill's specialty?

David Merrill (NPI 1902923410) is a Medicare-billing provider whose primary specialty is Geriatric Psychiatry in Los Angeles, CA.

Where does David Merrill practice?

David Merrill practices in Los Angeles, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1902923410.

How much does Medicare pay David Merrill?

David Merrill (NPI 1902923410) received approximately $265K in total Medicare Part B payments, serving 300 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1902923410

David MerrillMD

Geriatric PsychiatryLos Angeles, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

938

Unique beneficiaries

—

Total services

3,245

Distinct HCPCS

Medicare payment

$259K

Peer benchmark

Total Medicare services vs. 15 Geriatric Psychiatry providers in CA — top quintile (cohort median 534).

PRESCRIBING · PART D · 2024

Total Rx claims

1,603

Beneficiaries

—

Total drug cost

$64K

Distinct drugs

Brand share

20.6%

Top prescribed drugs

Escitalopram Oxalate150 claims

Venlafaxine Hcl124 claims

Quetiapine Fumarate108 claims

Donepezil Hcl95 claims

Mirtazapine74 claims

QUALITY · MIPS · 2024

Final MIPS score

88.3

Quality

76.0

Cost

56.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.56%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$358

Payment records

By payment type

Food and Beverage$358

Top paying entities

Food and Beverage$358

REFERRAL NETWORK

Where David Merrill's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 9 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
John Miller Anesthesiology · Los Angeles, CA	34	169
Stephen Chen Geriatric Psychiatry · Los Angeles, CA	34	740
Laurie Casaus Psychiatry · Los Angeles, CA	32	181
Mariya Svilik Anesthesiology · Los Angeles, CA	29	230
Peifeng Hu Geriatric Medicine · Los Angeles, CA	20	180
Chinh Mai Anesthesiology · Los Angeles, CA	20	85
Assurex Health, Inc. Clinical Laboratory · Mason, OH	17	37
REGENTS OF THE UNIV OF CALIFORNIA	17	61
Zaldy Tan Geriatric Medicine · Los Angeles, CA	11	114

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events