What is Maria O'brien's specialty?

Maria O'brien (NPI 1366429011) is a Medicare-billing provider whose primary specialty is Family Practice in Leonardtown, MD.

Where does Maria O'brien practice?

Maria O'brien practices in Leonardtown, MD, based on the location reported in the CMS Medicare provider datasets for NPI 1366429011.

How much does Medicare pay Maria O'brien?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Maria O'brien (NPI 1366429011) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1366429011

Maria O'brien

Family PracticeLeonardtown, MDI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

159

Beneficiaries

—

Total drug cost

$2K

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Atorvastatin Calcium33 claims

Amlodipine Besylate23 claims

Levothyroxine Sodium22 claims

Omeprazole17 claims

Losartan Potassium15 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 Maria O'brien'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
ADVENTIST HEALTH MEDICAL CENTER TEHACHAPI	84	224
Donald Harwick Physician Assistant · California City, CA	28	70
ADVENTIST HEALTH MEDICAL CENTER TEHACHAPI	26	54
ADVENTIST HEALTH MEDICAL CENTER TEHACHAPI	16	41

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
ADVENTIST HEALTH MEDICAL CENTER TEHACHAPI	50	145
ADVENTIST HEALTH MEDICAL CENTER TEHACHAPI	34	67
ADVENTIST HEALTH MEDICAL CENTER TEHACHAPI	32	109
Donald Harwick Physician Assistant · California City, CA	26	61
Barbara Robertus Physician Assistant · Santa Maria, CA	16	48
ADVENTIST HEALTH MEDICAL CENTER TEHACHAPI	15	36
Bobbi Meyer Nurse Practitioner · Tehachapi, CA	14	21
Pacific Point Laboratories, Inc. Clinical Laboratory · San Luis Obispo, CA	13	39
Harmandeep Gill Diagnostic Radiology · Lancaster, CA	11	17

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