DR. ALFONSO MARTINEZ MD
NPI 1841243581
Pediatrics - Pediatric Gastroenterology in Milwaukee, WI

Q: What is Alfonso Martinez's NPI number?

The NPI number for Alfonso Martinez is 1841243581. It was assigned to this individual provider in the NPPES registry on May 17, 2006.

Q: What is Alfonso Martinez's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Q: When was this NPI record last updated?

The NPPES record for Alfonso Martinez was last updated on May 5, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 17, 2006PECOS Enrolled

9000 W WISCONSIN AVE, PEDIATRIC GASTROENTEROLOGY, MILWAUKEE, WI 53226(414) 266-3690(414) 266-3676 Get Directions Write a Review

NPPES record last updated: May 5, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Alfonso Martinez Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALFONSO MARTINEZ MD (NPI 1841243581) is an individual pediatric gastroenterology provider in Milwaukee, Wisconsin, licensed in Wisconsin (37826) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841243581

Entity TypeIndividualMale

Primary Taxonomy2080P0206X

Provider Legal NameDR. ALFONSO MARTINEZCredential: MD

Location Address9000 W WISCONSIN AVE, PEDIATRIC GASTROENTEROLOGYMilwaukee, WI 53226-4874

Mailing Address9000 W Wisconsin Ave, Pediatric GastroenterologyMilwaukee, WI 53226-4874 · (414) 266-3690 · Fax (414) 266-3676

Phone(414) 266-3690

Fax(414) 266-3676

Sole ProprietorNo

Enumeration DateMay 17, 2006

Last NPPES UpdateMay 5, 2014

✔ NPI 1841243581 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0206X

License✔ Licensed in WI · 37826

Definition

A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.

9000 W WISCONSIN AVE, Milwaukee, WI 53226

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Other Identifiers 5

Medicare PIN736011370WI

Medicaid1841243581WI

Medicare UPING34446

Other009006261Humana

Medicare PIN680862645WI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alfonso Martinez Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Alfonso Martinez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Medical College Of Wisconsin, Inc.

0.2 mi

Internal Medicine

8701 WATERTOWN PLANK RD
Milwaukee, WI 53226

Reassigned Medicare billing, Wisconsin enrollment
3,983 clinicians in this Medicare group

NPI 1699720086 (414) 955-7101

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53226 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$123.69 typical visit price

range $53.90 – $163.24

Typical copayment $30.92 (range $13.47 – $40.81)

Most-billed visit code 99204

Established Patient

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. LESLIE L. TALBERT NP

Nurse Practitioner (Pediatrics)

9000 W WISCONSIN AVE, PEDIATRIC CRITICAL CARE
MILWAUKEE, WI 53226

Milwaukee County (414) 266-3360

SARAH MARIE RUMLER DO

Pediatrics (Pediatric Hematology-Oncology)