What is Guillermo Madero's specialty?

Guillermo Madero (NPI 1235384439) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Antonio, TX.

Where does Guillermo Madero practice?

Guillermo Madero practices in San Antonio, TX, based on the location reported in the CMS Medicare provider datasets for NPI 1235384439.

How much does Medicare pay Guillermo Madero?

Guillermo Madero (NPI 1235384439) received approximately $27K in total Medicare Part B payments, serving 115 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1235384439

Guillermo MaderoMD

Internal MedicineSan Antonio, TXI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

238

Unique beneficiaries

—

Total services

337

Distinct HCPCS

Medicare payment

$22K

Peer benchmark

Total Medicare services vs. 6,183 Internal Medicine providers in TX — above median (cohort median 673).

PRESCRIBING · PART D · 2024

Total Rx claims

12,156

Beneficiaries

—

Total drug cost

$1.5M

Distinct drugs

146

Brand share

19.5%

Top prescribed drugs

Atorvastatin Calcium939 claims

Lisinopril573 claims

Losartan Potassium478 claims

Metformin Hcl414 claims

Amlodipine Besylate412 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$498

Payment records

By payment type

Food and Beverage$498

Top paying entities

Food and Beverage$498

REFERRAL NETWORK

Where Guillermo Madero'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). 52 inbound referrers · 81 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
POST ACUTE MEDICAL AT SAN ANTONIO LLC	128	607
City Of San Antonio Texas Ambulance Service Provider · San Antonio, TX	72	303
METRO AMBULANCE, LP	72	333
Dusty Wilkins Nurse Practitioner · San Antonio, TX	52	408
MADISON OAK MANAGEMENT, INC.	52	366
NPI 1225003981	48	238
Christina Mccune Diagnostic Radiology · San Antonio, TX	46	265
AMERICAN MEDICAL RESPONSE AMBULANCE SERVICE INC	42	187
Amy Benson Diagnostic Radiology · San Antonio, TX	39	172
Eric Fein Emergency Medicine · San Antonio, TX	35	415
Allan Truax Diagnostic Radiology · San Antonio, TX	32	173
Daniel Tubbesing Emergency Medicine · San Antonio, TX	31	141

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
William Janes Physical Medicine and Rehabilitation · San Antonio, TX	123	1,015
VHS SAN ANTONIO PARTNERS LLC	106	472
CORONADO CONTINUING CARE CENTER LTD CO	97	391
METRO AMBULANCE, LP	78	259
Jennifer Freytag Nurse Practitioner · New Braunfels, TX	77	577
Alex Willingham Physical Medicine and Rehabilitation · San Antonio, TX	61	201
Dusty Wilkins Nurse Practitioner · San Antonio, TX	60	541
Barry Hill Physical Medicine and Rehabilitation · San Antonio, TX	58	234
MADISON OAK MANAGEMENT, INC.	54	293
Ellen Shrouf Psychologist, Clinical · San Antonio, TX	44	341
Acadian Ambulance Service Of Texas Llc Ambulance Service Provider · Beaumont, TX	43	128
MEDICAL CENTER LABORATORIES II, LTD.	42	259

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