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ANN M WIERMAN M D LTD
NPI 1831557354
Internal Medicine - Hematology & Oncology in Las Vegas, NV

Active since January 29, 2016
3150 N TENAYA WAY, SUITE 200, LAS VEGAS, NV 89128(702) 749-3700 Get Directions Write a Review

NPPES record last updated: December 2, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 2, 2024, Jan 29, 2016 (2 updates tracked since 2016).

About Ann M Wierman M D Ltd NPPES

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

ANN M WIERMAN M D LTD (NPI 1831557354) is a healthcare organization registered as a hematology & oncology in Las Vegas, Nevada and active in the NPI registry since January 2016. The organization lists Ann M Wierman, Owner, as its authorized official.

NPPES Registry Identity

NPI1831557354
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NameANN M WIERMAN M D LTD
Location Address3150 N TENAYA WAY, SUITE 200Las Vegas, NV 89128
Mailing Address3150 N Tenaya Way, Suite 200Las Vegas, NV 89128-0443 · (702) 749-3700
Phone(702) 749-3700
Organization SubpartNo
Authorized OfficialAnn M WiermanOwner · (702) 749-3700
Enumeration DateJanuary 29, 2016
Last NPPES UpdateDecember 2, 20242 updates tracked since enumeration
NPPES CertifiedDecember 2, 2024
✔ NPI 1831557354 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in NV · 7788
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
3150 N TENAYA WAY, Las Vegas, NV 89128
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 Ambetter from Arizona Complete Health, Ambetter Health.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)

Ann M Wierman M D Ltd 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 Ann M Wierman M D Ltd, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ann Wierman, MD, FACP
Hematology/Oncology
NPI 1447270087
3150 N TENAYA WAY STE 200
Las Vegas, NV 89128
(702) 822-2000
✔ 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.

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 Ann M Wierman M D Ltd's NPI number?

The NPI number for Ann M Wierman M D Ltd is 1831557354. It was assigned to this organization in the NPPES registry on January 29, 2016.

Where is Ann M Wierman M D Ltd located?

Ann M Wierman M D Ltd is located at 3150 N Tenaya Way Suite 200, Las Vegas, NV 89128. The listed phone number is (702) 749-3700.

What is Ann M Wierman M D Ltd's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Ann M Wierman M D Ltd enrolled in Medicare?

Yes. Ann M Wierman M D Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ann M Wierman M D Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Hematology/Oncology) reassigns their Medicare billing to Ann M Wierman M D Ltd. 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 Ann M Wierman M D Ltd accept?

Health plans from Ambetter Health and Ambetter from Arizona Complete Health list Ann M Wierman M D Ltd 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 Ann M Wierman M D Ltd was last updated on December 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months 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.