PROVIDER PROFILE · NPI 1003041104

Barbara O'callaghanRN, NP

Nurse PractitionerLawrenceville, GAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

283

Unique beneficiaries

—

Total services

506

Distinct HCPCS

Medicare payment

$26K

Peer benchmark

Total Medicare services vs. 6,490 Nurse Practitioner providers in GA — above median (cohort median 244).

PRESCRIBING · PART D · 2024

Total Rx claims

259

Beneficiaries

—

Total drug cost

$17K

Distinct drugs

Brand share

15.4%

Top prescribed drugs

Anastrozole55 claims

Lorazepam32 claims

Tramadol Hcl32 claims

Apixaban23 claims

Pantoprazole Sodium22 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 110161

Hospital

REFERRAL NETWORK

Where Barbara O'callaghan'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). 4 inbound referrers · 9 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Bioreference Health, Llc Clinical Laboratory · Elmwood Park, NJ	29	166
Laboratory Corporation Of America Holdings Clinical Laboratory · Birmingham, AL	21	58
Justin Caughron Diagnostic Radiology · Lawrenceville, GA	13	53
Nanyoung Park Nurse Practitioner · Duluth, GA	11	97

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
NORTHSIDE HOSPITAL, INC.	134	1,544
Christopher Hagenstad Medical Oncology · Lawrenceville, GA	83	1,123
Bioreference Health, Llc Clinical Laboratory · Elmwood Park, NJ	53	311
NORTHSIDE HOSPITAL, INC.	44	178
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Tucker, GA	20	58
Laboratory Corporation Of America Holdings Clinical Laboratory · Birmingham, AL	15	38
Mohan Krishnamachary Internal Medicine · Johns Creek, GA	14	70
Nanyoung Park Nurse Practitioner · Duluth, GA	13	109
Justin Caughron Diagnostic Radiology · Lawrenceville, GA	11	38

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