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MICHAEL N KATZOFF MD LLC
NPI 1922695162
Internal Medicine - Pulmonary Disease in Greenfield, WI

Active since December 22, 2020
4131 W LOOMIS RD, GREENFIELD, WI 53221(414) 817-3680 Get Directions Write a Review

NPPES record last updated: December 22, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Michael N Katzoff Md Llc NPPES

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

MICHAEL N KATZOFF MD LLC (NPI 1922695162) is a healthcare organization registered as a pulmonary disease in Greenfield, Wisconsin and active in the NPI registry since December 2020. The organization lists Michael N Katzoff, Sole Member, as its authorized official.

NPPES Registry Identity

NPI1922695162
Entity TypeOrganization
Primary Taxonomy207RP1001X
Legal Business NameMICHAEL N KATZOFF MD LLC
Location Address4131 W LOOMIS RDGreenfield, WI 53221-2057
Mailing Address4131 W Loomis RdGreenfield, WI 53221-2057 · (414) 817-3680
Phone(414) 817-3680
Organization SubpartNo
Authorized OfficialMichael N KatzoffSole Member · (414) 350-6808
Enumeration DateDecember 22, 2020
NPPES CertifiedDecember 22, 2020
✔ NPI 1922695162 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
4131 W LOOMIS RD, Greenfield, WI 53221
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare).Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael N Katzoff Md Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Michael N Katzoff MD LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Michael Katzoff, MD
Pulmonary Disease
NPI 1558304485
3237 S 16TH ST
Milwaukee, WI 53215
(414) 647-5000
✔ PECOS✔ Accepts Medicare2.2 mi

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 N Katzoff MD LLC's NPI number?

The NPI number for Michael N Katzoff MD LLC is 1922695162. It was assigned to this organization in the NPPES registry on December 22, 2020.

Where is Michael N Katzoff MD LLC located?

Michael N Katzoff MD LLC is located at 4131 W Loomis Rd, Greenfield, WI 53221. The listed phone number is (414) 817-3680.

What is Michael N Katzoff MD LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Michael N Katzoff MD LLC enrolled in Medicare?

Yes. Michael N Katzoff MD LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Michael N Katzoff MD LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Pulmonary Disease) reassigns their Medicare billing to Michael N Katzoff MD LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Michael N Katzoff MD LLC accept?

Health plans from CareSource (Common Ground Healthcare) list Michael N Katzoff MD LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Michael N Katzoff MD LLC was last updated on December 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.