What is Ronald Shigematsu's specialty?

Ronald Shigematsu (NPI 1194899831) is a Medicare-billing provider whose primary specialty is Family Practice in Los Angeles, CA.

Where does Ronald Shigematsu practice?

Ronald Shigematsu practices in Los Angeles, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1194899831.

How much does Medicare pay Ronald Shigematsu?

Ronald Shigematsu (NPI 1194899831) received approximately $29K in total Medicare Part B payments, serving 154 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1194899831

Ronald ShigematsuMD

Family PracticeLos Angeles, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

171

Unique beneficiaries

—

Total services

469

Distinct HCPCS

Medicare payment

$29K

Peer benchmark

Total Medicare services vs. 8,228 Family Practice providers in CA — above median (cohort median 411).

PRESCRIBING · PART D · 2024

Total Rx claims

3,384

Beneficiaries

—

Total drug cost

$125K

Distinct drugs

Brand share

16.0%

Top prescribed drugs

Losartan Potassium379 claims

Amlodipine Besylate346 claims

Atorvastatin Calcium311 claims

Lovastatin127 claims

Omeprazole126 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.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 555438

Nursing home

REFERRAL NETWORK

Where Ronald Shigematsu'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). 7 inbound referrers · 12 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ST VINCENT MEDICAL CENTER	55	134
Unilab Corporation Clinical Laboratory · West Hills, CA	39	78
KURATA, FRED	28	41
Kenneth Teshima Podiatry · Laguna Woods, CA	18	34
Patrick Takahashi Internal Medicine · Los Angeles, CA	17	48
WALUCH, VICTOR	16	37
Jason Ho Hematology-Oncology · Los Angeles, CA	12	61

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	118	180
ST VINCENT MEDICAL CENTER	40	91
Narinder Batra Cardiology · Los Angeles, CA	27	91
Patrick Takahashi Internal Medicine · Los Angeles, CA	22	44
Jean Katow Ophthalmology · Los Angeles, CA	22	37
WALUCH, VICTOR	21	46
KURATA, FRED	21	29
Kan-Di-Ki Llc Portable X-Ray Supplier · North Hollywood, CA	19	50
Kenneth Teshima Podiatry · Laguna Woods, CA	16	26
Third Street Surgery Center Llc Ambulatory Surgical Center · Los Angeles, CA	15	18
NPI 1952359283	15	31
E. Michael Mcmonigle Diagnostic Radiology · Los Angeles, CA	15	32

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