Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MICHAEL J ROCK MD
NPI 1689640773
Pediatrics - Pediatric Pulmonology in Madison, WI

Q: What is Michael Rock's NPI number?

The NPI number for Michael Rock is 1689640773. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Q: What is Michael Rock's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Pulmonology, with taxonomy code 2080P0214X.

Q: When was this NPI record last updated?

The NPPES record for Michael Rock was last updated on September 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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 February 27, 2006PECOS Enrolled

5118 BUFFALO TRL, MADISON, WI 53705(608) 233-7397 Get Directions Write a Review

NPPES record last updated: September 18, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 18, 2026, Jul 19, 2023, Jan 28, 2022 and 1 more (4 updates tracked since 2021).

On this page

About Michael J Rock Md NPPES

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

MICHAEL J ROCK MD (NPI 1689640773) is an individual pediatric pulmonology provider in Madison, Wisconsin, licensed in Wisconsin (28064) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689640773

Entity TypeIndividualMale

Primary Taxonomy2080P0214X

Provider Legal NameMICHAEL J ROCKCredential: MD

Location Address5118 BUFFALO TRLMadison, WI 53705-4751

Mailing Address5118 Buffalo TrlMadison, WI 53705-4751

Phone(608) 233-7397

Sole ProprietorNo

Enumeration DateFebruary 27, 2006

Last NPPES UpdateSeptember 18, 20264 updates tracked since enumeration

NPPES CertifiedSeptember 18, 2026

✔ NPI 1689640773 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric PulmonologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0214X

License✔ Licensed in WI · 28064

Definition

A pediatrician dedicated to the prevention and treatment of all respiratory diseases affecting infants, children and young adults. This specialist is knowledgeable about the growth and development of the lung, assessment of respiratory function in infants and children, and experienced in a variety of invasive and noninvasive diagnostic techniques.

5118 BUFFALO TRL, Madison, WI 53705

Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael J Rock 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 Reassignments

Medicare enrollment records show Michael Rock reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Wisconsin System Non Payroll

1.9 mi

Multi-Specialty

750 HIGHLAND AVE FL 4, HEALTH SCIENCES LEARNING CENTER
Madison, WI 53705

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

NPI 1346266319 (608) 263-4938

University Of Wisconsin Medical Foundation, Inc

3.6 mi

Multi-Specialty

7974 UW HEALTH COURT
Middleton, WI 53562

Reassigned Medicare billing, Wisconsin enrollment
2,832 clinicians in this Medicare group

NPI 1598784555 (608) 829-5485

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

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Rock's NPI number?

The NPI number for Michael Rock is 1689640773. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Where is Michael Rock located?

Michael Rock practices at 5118 Buffalo Trl, Madison, WI 53705. The listed phone number is (608) 233-7397.

What is Michael Rock's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Pulmonology, with taxonomy code 2080P0214X.

Is Michael Rock enrolled in Medicare?

Yes. Michael Rock is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Michael Rock's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Rock reassigns Medicare benefits to 2 organizations: University Of Wisconsin System Non Payroll (Madison, WI) and University Of Wisconsin Medical Foundation, Inc (Middleton, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Rock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michael Rock was last updated on September 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.