What is Karl Fukunaga's specialty?

Karl Fukunaga (NPI 1487644613) is a Medicare-billing provider whose primary specialty is Gastroenterology in Torrance, CA.

Where does Karl Fukunaga practice?

Karl Fukunaga practices in Torrance, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1487644613.

How much does Medicare pay Karl Fukunaga?

Karl Fukunaga (NPI 1487644613) received approximately $102K in total Medicare Part B payments, serving 412 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1487644613

Karl FukunagaMD

GastroenterologyTorrance, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

807

Unique beneficiaries

—

Total services

1,103

Distinct HCPCS

Medicare payment

$94K

Peer benchmark

Total Medicare services vs. 1,398 Gastroenterology providers in CA — above median (cohort median 750).

PRESCRIBING · PART D · 2024

Total Rx claims

997

Beneficiaries

—

Total drug cost

$425K

Distinct drugs

Brand share

40.3%

Top prescribed drugs

Omeprazole226 claims

Sodium, Potassium,mag Sulfates157 claims

Famotidine110 claims

Pantoprazole Sodium86 claims

Linaclotide54 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$868

Payment records

By payment type

Food and Beverage$868

Top paying entities

Food and Beverage$868

REFERRAL NETWORK

Where Karl Fukunaga'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). 9 inbound referrers · 11 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
TORRANCE MEMORIAL MEDICAL CENTER	115	322
PATHOLOGY, INC.	72	150
Torrance Endoscopy And Surgical Affiliates, Inc Ambulatory Surgical Center · Torrance, CA	72	118
Azam Riyaz Gastroenterology · Torrance, CA	67	114
Albert Grabb Diagnostic Radiology · Torrance, CA	19	35
Donny Baek Diagnostic Radiology · Los Angeles, CA	15	27
WEST COAST CLINICAL LABORATORIES, INC.	14	58
Westmed Ambulance Inc Ambulance Service Provider · Compton, CA	14	25
PO, JONATHAN	11	23

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
TORRANCE MEMORIAL MEDICAL CENTER	80	189
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	54	137
Azam Riyaz Gastroenterology · Torrance, CA	29	52
PATHOLOGY, INC.	26	49
PROVIDENCE HEALTH SYSTEM SOUTHERN CALIFORNIA	25	43
Torrance Endoscopy And Surgical Affiliates, Inc Ambulatory Surgical Center · Torrance, CA	21	33
Mitchell Sklar Diagnostic Radiology · Torrance, CA	15	37
PROVIDENCE HEALTH SYSTEM - SOUTHERN CALIFORNIA	14	19
David Stone Diagnostic Radiology · Torrance, CA	12	26
WEST COAST CLINICAL LABORATORIES, INC.	11	42
Albert Grabb Diagnostic Radiology · Torrance, CA	11	24

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