NPPES file of Aug 9, 2026

Alissa A. Weber, M.D.

Hematology & Oncology Physician · Madison, WI

Alissa A. Weber, M.D. is a hematology & oncology physician with a practice address in Madison, Wisconsin, and NPI 1578763066, issued on Jul 23, 2007. Check the license (Wisconsin 62534-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1578763066
Name
Alissa A. Weber
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
62534-20 WI
Self-reported in NPPES; status is on the state search
Practice location
1211 Fish Hatchery RD, Madison, WI 53715
Phone
(608) 252-8000
Enumerated
Jul 23, 2007
Record last updated
Feb 1, 2022
Fax
(608) 410-2901
Medicaid ID
1578763066 WI
Medicare enrollment
Enrolled (PECOS I20140811002229); accepts Medicare assignment
Medical or professional school
University Of Wisconsin School Of Medicine, 2007
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1211 Fish Hatchery RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Caroline Aaberg, APNPNurse Practitioner1881384394
  2. Michelle Adler-Gronski, PA-CPhysician Assistant1265499487
  3. Heidi Allen-Bregman, APNPNurse Practitioner1255380424
  4. Douglas Arnold, M.D.Orthopaedic Surgery Physician1770788267
  5. Emily Beaman, CNMAdvanced Practice Midwife1285037325
  6. Bridget Bellissimo, PA-CPhysician Assistant1093435091

Verify Alissa A. Weber in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 62534-20
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

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44% more Medicare Part D claims than the average hematology & oncology physician in 2024

1,262 Medicare Part D claims for 191 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 57 claims were for opioids.

  1. Alissa Weber1,262
  2. Specialty average877

Most prescribed

  1. Acyclovir77 claims
  2. Anastrozole68 claims
  3. Imbruvica58 claims
  4. Potassium Chloride57 claims
  5. Hydroxyurea53 claims
  6. Gabapentin49 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Dean Health Systems IncMadison, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alissa A. Weber among 295 hematology & oncology physician records in Wisconsin

Alissa A. Weber, M.D. is one of 295 hematology & oncology physician records with a practice address in Wisconsin. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.

  • NPI issued2007 · 41% of these records are older, 46% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2007 · median 2004 among the 217 with a school on file
  • Record last updated2022 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Wisconsin

There are 295 hematology & oncology physician records in Wisconsin.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Yamil Arbaje, MDMadison, WI 537151033162904
  2. Trevor Dennie, MDMadison, WI 537151710030333
  3. James Engeler, MDMadison, WI 537151649223975
  4. Michael Frontiera, MDMadison, WI 537151669428017
  5. Roy Kim, M.D.Madison, WI 537151942316286
  6. Lisa Lepeak, M.D.Madison, WI 537151053357384
  7. Thomas McFarland, MDMadison, WI 537151093783250
  8. Jacqueline Mullvain, MDMadison, WI 537151528387131

Common questions

What is Alissa A. Weber, M.D.'s NPI number?

Alissa A. Weber, M.D.'s National Provider Identifier (NPI) is 1578763066, issued on Jul 23, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Alissa A. Weber, M.D. located?

The NPPES record lists a practice address at 1211 Fish Hatchery RD, Madison, WI, 53715. Phone: (608) 252-8000. Providers update this record themselves, so call before visiting.

How can I verify Alissa A. Weber, M.D.'s license?

NPPES lists Wisconsin license number 62534-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Alissa A. Weber, M.D. prescribe under Medicare Part D?

In 2024, Alissa A. Weber, M.D. had 1,262 Medicare Part D claims for 191 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.