What is Raphael Merriman's specialty?

Raphael Merriman (NPI 1942258728) is a Medicare-billing provider whose primary specialty is Gastroenterology in San Francisco, CA.

Where does Raphael Merriman practice?

Raphael Merriman practices in San Francisco, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1942258728.

How much does Medicare pay Raphael Merriman?

Raphael Merriman (NPI 1942258728) received approximately $126K in total Medicare Part B payments, serving 399 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1942258728

Raphael MerrimanMD

GastroenterologySan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

554

Unique beneficiaries

—

Total services

1,010

Distinct HCPCS

Medicare payment

$121K

Peer benchmark

Total Medicare services vs. 1,398 Gastroenterology providers in CA — above median (cohort median 750).

PRESCRIBING · PART D · 2024

Total Rx claims

1,468

Beneficiaries

—

Total drug cost

$844K

Distinct drugs

Brand share

28.3%

Top prescribed drugs

Tacrolimus151 claims

Ursodiol127 claims

Tenofovir Alafenamide120 claims

Rifaximin111 claims

Furosemide101 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Raphael Merriman'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). 20 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Garret Hisatake General Surgery · San Francisco, CA	48	770
Brian Bronzo Diagnostic Radiology · San Francisco, CA	39	254
Edward Baker Diagnostic Radiology · San Francisco, CA	38	219
STEVENS, SUSAN	37	267
CARPENTER, HOWARD	32	187
Adil Wakil Gastroenterology · San Francisco, CA	25	224
NPI 1275567943	24	136
Guy Lubliner Internal Medicine · San Francisco, CA	24	396
Matthew Mcandrew Hospitalist · San Francisco, CA	23	272
Hanieh Rad Internal Medicine · Tualatin, OR	20	186
Constance Wylie Nurse Practitioner · San Francisco, CA	19	30
George Horng Internal Medicine · San Francisco, CA	17	225

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