What is John Barstis's specialty?

John Barstis (NPI 1528093085) is a Medicare-billing provider whose primary specialty is Internal Medicine in Valencia, CA.

Where does John Barstis practice?

John Barstis practices in Valencia, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1528093085.

How much does Medicare pay John Barstis?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for John Barstis (NPI 1528093085) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1528093085

John Barstis

Internal MedicineValencia, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

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 John Barstis'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). 16 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Alexander Black Hematology-Oncology · Santa Clarita, CA	74	2,378
Rena Callahan Hematology-Oncology · Valencia, CA	35	674
Richard Goldman Diagnostic Radiology · Santa Monica, CA	35	188
REGENTS OF THE UNIV OF CALIFORNIA	31	140
Unilab Corporation Clinical Laboratory · West Hills, CA	30	134
Omar Sahagun Diagnostic Radiology · Los Angeles, CA	28	187
Ian Levin Diagnostic Radiology · Los Angeles, CA	22	332
Kewang Li Pathology · Detroit, MI	20	255
Harold Quan Cardiology · Newhall, CA	20	72
GADOWSKI, DOUGLAS	19	137
Amir Rabbani Cardiology · Torrance, CA	18	276
ANTELOPE VALLEY HEALTH CARE DISTRICT	17	45

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