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POSER CLINIC LLC
NPI 1912930751
Internal Medicine - Cardiovascular Disease in Columbus, WI

Active since July 07, 2006CLIA 52D0394072 · Microscopy
635 PARK AVE, COLUMBUS, WI 53925(920) 623-5000(920) 623-0519 Get Directions Write a Review

NPPES record last updated: November 13, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Poser Clinic Llc NPPES

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

POSER CLINIC LLC (NPI 1912930751) is a healthcare organization registered as a cardiovascular disease in Columbus, Wisconsin and active in the NPI registry since July 2006. The organization holds a CLIA Microscopy certificate valid through March 24, 2027 and lists Rolf F. Poser, Partner, as its authorized official.

NPPES Registry Identity

NPI1912930751
Entity TypeOrganization
Primary Taxonomy207RC0000X
Legal Business NamePOSER CLINIC LLC
Location Address635 PARK AVEColumbus, WI 53925-2604
Mailing Address635 Park Ave, P.o. Box 229Columbus, WI 53925-2604 · (920) 623-5000 · Fax (920) 623-0519
Phone(920) 623-5000
Fax(920) 623-0519
Organization SubpartNo
Authorized OfficialRolf F. PoserPartner · (920) 623-5000
Enumeration DateJuly 7, 2006
Last NPPES UpdateNovember 13, 2019
✔ NPI 1912930751 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
635 PARK AVE, Columbus, WI 53925
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Dean Health Plan, Quartz.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)

Poser Clinic Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Poser Clinic LLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Rolf Poser, M.D.
Internal Medicine
NPI 1013910645
635 PARK AVE
Columbus, WI 53925
(920) 623-5000
✔ PECOS✔ Accepts MedicareSame address
Samuel Poser, M.D.
Internal Medicine
NPI 1346243821
635 PARK AVE
Columbus, WI 53925
(920) 623-5000
✔ PECOS✔ Accepts MedicareSame address

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 52D0394072

Poser Clinic LLC · Columbus, WI
Active · expires Mar 24, 2027
CLIA Number52D0394072
Laboratory TypePhysician Office
Certificate Effective DateMarch 25, 2025
Certificate Expiration DateMarch 24, 2027
Laboratory DirectorDr. Rolf F. Poser
Laboratory Phone(920) 623-5000
Laboratory LocationPoser Clinic LLC635 Park Ave, Columbus, WI 53925
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Poser Clinic LLC's NPI number?

The NPI number for Poser Clinic LLC is 1912930751. It was assigned to this organization in the NPPES registry on July 7, 2006.

Where is Poser Clinic LLC located?

Poser Clinic LLC is located at 635 Park Ave, Columbus, WI 53925. The listed phone number is (920) 623-5000.

What is Poser Clinic LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Poser Clinic LLC enrolled in Medicare?

Yes. Poser Clinic LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Poser Clinic LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to Poser Clinic 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Poser Clinic LLC hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 52D0394072) is associated with this NPI, valid through March 24, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Poser Clinic LLC accept?

Health plans from Dean Health Plan and Quartz list Poser Clinic 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 Poser Clinic LLC was last updated on November 13, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.