Ann Wierman, MD, FACP
NPI 1447270087 · Hematology & Oncology Physician · Las Vegas, NV
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Wierman, MD, FACP is a Hematology & Oncology Physician provider in Las Vegas, NV (NPI 1447270087).
Provider details
- NPI number
- 1447270087
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, FACP
- Sex
- Female
- Sole proprietor
- No
- License
- H9280 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,456 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 1,196 | $109 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,063 | $120 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 570 | $26 |
| Infusion Into a Vein for Hydration, Each Additional Hour96361 | 487 | $12 |
| Infusion Into a Vein for Hydration, 31-60 Minutes96360 | 473 | $30 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 455 | $13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 76 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 174 | 47 |
| Omeprazole | 134 | 55 |
| Prednisone | 85 | 38 |
| Ondansetron Hcl | 85 | 46 |
| Eltrombopag Olaminebrand: Promacta | 78 | 13 |
| Warfarin Sodium | 76 | 15 |
| Rivaroxabanbrand: Xarelto |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,995 across 284 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2024-10-30
- Certified
- 2024-10-30
Frequently asked questions
- What is Ann Wierman's NPI number?
- Ann Wierman's National Provider Identifier (NPI) is 1447270087, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Wierman's specialty?
- Ann Wierman is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Wierman located?
- Ann Wierman's practice location on file with NPPES is 3150 N Tenaya Way, Las Vegas, NV 89128-0444.
- What is Ann Wierman's phone number?
- The practice phone number listed in the NPPES registry for Ann Wierman is (702) 822-2000.
- Does Ann Wierman accept Medicare?
- Ann Wierman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Wierman's NPI active?
- Yes — Ann Wierman's NPI (1447270087) is active in the NPPES registry as of the last update on 2024-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.