What is John Barnwell's specialty?

John Barnwell (NPI 1831105550) is a Medicare-billing provider whose primary specialty is General Surgery in Detroit, MI.

Where does John Barnwell practice?

John Barnwell practices in Detroit, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1831105550.

How much does Medicare pay John Barnwell?

John Barnwell (NPI 1831105550) received approximately $55K in total Medicare Part B payments, serving 164 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1831105550

John BarnwellM.D.

General SurgeryDetroit, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

164

Unique beneficiaries

—

Total services

221

Distinct HCPCS

Medicare payment

$15K

Peer benchmark

Total Medicare services vs. 741 General Surgery providers in MI — top quintile (cohort median 205).

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 · 2025

Total received

$2K

Payment records

By payment type

Travel and Lodging$2K

Food and Beverage$533

Top paying entities

Travel and Lodging$2K

Food and Beverage$533

REFERRAL NETWORK

Where John Barnwell'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). 45 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
VHS HARPER-HUTZEL HOSPITAL INC	97	230
Yogesh Mody Diagnostic Radiology · Southfield, MI	50	128
City Of Detroit Ambulance Service Provider · Detroit, MI	48	106
Kanika Khanna Diagnostic Radiology · Detroit, MI	47	132
CUZZORT, LOUAN	42	103
Keiva Bland General Surgery · Perrysburg, OH	41	90
Tosan Fregene Hematology-Oncology · Oak Park, MI	39	169
Gary Galens Diagnostic Radiology · Southfield, MI	37	96
Glenn Webster Diagnostic Radiology · Statesville, NC	36	85
Hershel Jackson Gastroenterology · Detroit, MI	33	86
Ahmad Aburashed Gastroenterology · Southfield, MI	32	72
Joseph Koza Diagnostic Radiology · Detroit, MI	31	79

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