What is Gerard Mullin's specialty?

Gerard Mullin (NPI 1891746996) is a Medicare-billing provider whose primary specialty is Gastroenterology in Baltimore, MD.

Where does Gerard Mullin practice?

Gerard Mullin practices in Baltimore, MD, based on the location reported in the CMS Medicare provider datasets for NPI 1891746996.

How much does Medicare pay Gerard Mullin?

Gerard Mullin (NPI 1891746996) received approximately $58K in total Medicare Part B payments, serving 369 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1891746996

Gerard MullinM.D.

PRACTICEJOHNS HOPKINS HOSPITALSee all providers at this practice →

GastroenterologyBaltimore, MDI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

399

Unique beneficiaries

—

Total services

405

Distinct HCPCS

Medicare payment

$53K

Peer benchmark

Total Medicare services vs. 343 Gastroenterology providers in MD — below median (cohort median 894).

PRESCRIBING · PART D · 2024

Total Rx claims

174

Beneficiaries

—

Total drug cost

$7K

Distinct drugs

Brand share

25.9%

Top prescribed drugs

Pantoprazole Sodium42 claims

Omeprazole39 claims

Sodium, Potassium,mag Sulfates27 claims

Famotidine20 claims

Sodium Chloride/Nahco3/Kcl/Peg18 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Gerard Mullin'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). 11 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Kathleen Cox-Miller Certified Registered Nurse Anesthetist (CRNA) · Baltimore, MD	26	33
Quest Diagnostics Incorporated Md Clinical Laboratory · Baltimore, MD	24	56
Johns Hopkins University Clinical Laboratory · Baltimore, MD	21	29
John Eng Diagnostic Radiology · Baltimore, MD	18	44
CORRETTI, MARY	18	36
Elliot Fishman Diagnostic Radiology · Baltimore, MD	16	23
Haitham Algrain Anesthesiology · Baltimore, MD	15	23
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	14	43
David Feigin Diagnostic Radiology · Baltimore, MD	13	20
Patrick Okolo Gastroenterology · Rochester, NY	13	24
Lysandra Voltaggio Pathology · Silver Spring, MD	13	15

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