NPPES file of Aug 9, 2026

Cassandra Donathan, PA-C

Physician Assistant · Wausau, WI

Cassandra Donathan, PA-C is a physician assistant with a practice address in Wausau, Wisconsin, and NPI 1588299275, issued on Mar 3, 2020. Check the license (Wisconsin 5187-23, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588299275
Name
Cassandra Donathan
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
5187-23 WI
Self-reported in NPPES; status is on the state search
Practice location
3300 Westhill Dr, Wausau, WI 54401
Phone
(715) 843-1039
Enumerated
Mar 3, 2020
Record last updated
Mar 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20201203001319); accepts Medicare assignment
Medical or professional school
University Of Wisconsin School Of Medicine, 2020
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 3300 Westhill Dr

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

  1. Joseph Babiarz, M.D.Urology Physician1962446476
  2. Benjamin Battino, M.D.Urology Physician1417998451
  3. David Bluestein, M.D.Specialist1508894999
  4. Roy Brandell, M.D.Urology Physician1609816222
  5. Kirsten Donner, PA-CPhysician Assistant1518349505
  6. Panupong Hansrivijit, M.D., M.P.H.Nephrology Physician1558824870

Verify Cassandra Donathan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 5187-23
    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
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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81% more Medicare Part D claims than the average physician assistant in 2024

1,504 Medicare Part D claims for 422 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 14 claims were for opioids.

  1. Cassandra Donathan1,504
  2. Specialty average830

Most prescribed

  1. Tamsulosin Hcl449 claims
  2. Finasteride158 claims
  3. Myrbetriq102 claims
  4. Estradiol98 claims
  5. Solifenacin Succinate68 claims
  6. Oxybutynin Chloride Er67 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 84.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score91.8
  2. Costout of 100 · 30%53.8
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $625.40

20 payments; by number, the most common kind was food and beverage; the largest payer was Teleflex LLC. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Cassandra Donathan$625.40
  2. Specialty average$841.65

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Aspirus Medical Group, Inc.Rhinelander, WI
  2. Aspirus Rhinelander And Tomahawk Hospitals And Clinics, Inc.Stevens Point, WI

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

Cassandra Donathan among 3,475 physician assistant records in Wisconsin

Cassandra Donathan, PA-C is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 70% of them.

  • NPI issued2020 · 70% of these records are older, 24% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2020 · median 2016 among the 2,491 with a school on file
  • Record last updated2021 · 38% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

75 physician assistant records list a practice address in Wausau

They are 75 of the 1,958 NPPES records with a practice address in Wausau, and 3,475 physician assistant records in Wisconsin.

The 8 physician assistant records with the nearest ZIP codes

  1. Sarah Becker, PAWausau, WI 544011245255090
  2. Susan Brown, PA-CWausau, WI 544011861446114
  3. Barbara Budimlija, PAWausau, WI 544011205841012
  4. William Fisher, PA-CWausau, WI 544011053427765
  5. Carla Heiden, PA CWausau, WI 544011548248727
  6. Daniel Jackson, P.A.Wausau, WI 544011356376230
  7. David Nash, PA-CWausau, WI 544011679573463
  8. Julie Rayburn, P.A.Wausau, WI 544011184654899

Common questions

What is Cassandra Donathan, PA-C's NPI number?

Cassandra Donathan, PA-C's National Provider Identifier (NPI) is 1588299275, issued on Mar 3, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Cassandra Donathan, PA-C located?

The NPPES record lists a practice address at 3300 Westhill Dr, Wausau, WI, 54401. Phone: (715) 843-1039. Providers update this record themselves, so call before visiting.

How can I verify Cassandra Donathan, PA-C's license?

NPPES lists Wisconsin license number 5187-23, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Cassandra Donathan, PA-C prescribe under Medicare Part D?

In 2024, Cassandra Donathan, PA-C had 1,504 Medicare Part D claims for 422 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Cassandra Donathan, PA-C's MIPS final score?

The 2023 MIPS final score is 84.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.