What is Mary Louisa Barnhart's specialty?

Mary Louisa Barnhart (NPI 1811055353) is a Medicare-billing provider whose primary specialty is Psychiatry in Waterville, ME.

Where does Mary Louisa Barnhart practice?

Mary Louisa Barnhart practices in Waterville, ME, based on the location reported in the CMS Medicare provider datasets for NPI 1811055353.

How much does Medicare pay Mary Louisa Barnhart?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Mary Louisa Barnhart (NPI 1811055353) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1811055353

Mary Louisa Barnhart

PRACTICEMAINEGENERAL HEALTHSee all providers at this practice →

PsychiatryWaterville, MEI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

191

Beneficiaries

—

Total drug cost

$17K

Distinct drugs

Brand share

100.0%

Top prescribed drugs

Buprenorphine Hcl/Naloxone Hcl160 claims

Buprenorphine Hcl/Naloxone Hcl31 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 Mary Louisa Barnhart'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
Robert Croswell Psychiatry · Waterville, ME	36	241
WIEGAND, DIANE	17	33
Paul Minot Psychiatry · Waterville, ME	16	54
BREER, DAVID	16	142
Joanne Nicastro Nurse Practitioner · Bethel, ME	16	31
THOMAS, RICHARD	13	121
Amy Blitt Certified Registered Nurse Anesthetist (CRNA) · Reston, VA	12	37
NPI 1134188485	11	116
EASTERN MAINE HEALTHCARE SYSTEMS INLAND HOSPITAL	11	93
Eric Stram Diagnostic Radiology · Augusta, ME	11	26
Monir Musavi Psychiatry · Bangor, ME	11	39

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