WILLIAM ALVAREZ M.D.
NPI 1780792887
Internal Medicine - Gastroenterology in Manitowoc, WI

Q: What is William Alvarez's NPI number?

The NPI number for William Alvarez is 1780792887. It was assigned to this individual provider in the NPPES registry on August 28, 2006.

Q: What is William Alvarez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for William Alvarez was last updated on July 3, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 August 28, 2006PECOS Enrolled

1900 WOODLAND DR, MANITOWOC, WI 54220(920) 320-6212(920) 684-5548 Get Directions Write a Review

NPPES record last updated: July 3, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About William Alvarez M.d. NPPES

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

WILLIAM ALVAREZ M.D. (NPI 1780792887) is an individual gastroenterology provider in Manitowoc, Wisconsin, licensed in Wisconsin (46006) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1780792887

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameWILLIAM ALVAREZCredential: M.D.

Location Address1900 WOODLAND DRManitowoc, WI 54220-9662

Mailing AddressPo Box 2290Manitowoc, WI 54221-2290 · (920) 320-2591

Phone(920) 320-6212

Fax(920) 684-5548

Sole ProprietorNo

Enumeration DateAugust 28, 2006

Last NPPES UpdateJuly 3, 2012

✔ NPI 1780792887 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in WI · 46006

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

1900 WOODLAND DR, Manitowoc, WI 54220

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Other Identifiers 8

Other14832WI · Network Health Plan

Other390806395WI · Anthem

Other46006WI · Touchpoint

Medicare UPINH96061

OtherH96061WI · Cigna

OtherP00088531WI · Railroad Medicare

Medicare ID-Type Unspecified38235-0016WI

Medicaid34429800WI

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Alvarez M.d. 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 William Alvarez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Froedtert Manitowoc Medical Group, LLC

3.4 mi

Multi-Specialty

2300 WESTERN AVE
Manitowoc, WI 54220

Reassigned Medicare billing, Wisconsin enrollment
350 clinicians in this Medicare group

NPI 1437829975 (920) 320-2436

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 54220 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 10

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

MARY A GOVIER M.D.

Internal Medicine