What is Karl Coyner's specialty?

Karl Coyner (NPI 1609861418) is a Medicare-billing provider whose primary specialty is Diagnostic Radiology in Boston, MA.

Where does Karl Coyner practice?

Karl Coyner practices in Boston, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1609861418.

How much does Medicare pay Karl Coyner?

Karl Coyner (NPI 1609861418) received approximately $193K in total Medicare Part B payments, serving 4,151 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1609861418

Karl CoynerM.D.

Diagnostic RadiologyBoston, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

5,537

Unique beneficiaries

—

Total services

5,665

Distinct HCPCS

Medicare payment

$178K

Peer benchmark

Total Medicare services vs. 1,146 Diagnostic Radiology providers in MA — top quintile (cohort median 2,596).

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

No data available for this provider in 2025.

REFERRAL NETWORK

Where Karl Coyner'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). 296 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CAPE COD HOSPITAL INC	2,645	7,184
HENRY HEYWOOD MEMORIAL HOSPITAL	1,155	3,385
Philip Chiotellis Cardiology · Hyannis, MA	383	605
NPI 1144267477	356	671
Peter Chiotellis Cardiology · Hyannis, MA	267	703
ATHOL MEMORIAL HOSPITAL INCORPORATED	260	783
Karl Stajduhar Cardiology · Hyannis, MA	259	457
Town Of Yarmouth Ambulance Service Provider · S Yarmouth, MA	256	473
Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA	245	444
WILLIAMS, CHARLES	214	392
Charles Allison Diagnostic Radiology · Burlington, MA	184	332
Steven Kohler Emergency Medicine · Hyannis, MA	177	358

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