Benjamin J. Kaster, M.D.
Family Medicine Physician · Wausau, WI
Benjamin J. Kaster, M.D. is a family medicine physician with a practice address in Wausau, Wisconsin, and NPI 1881033298, issued on Jun 19, 2013. Check the license (Wisconsin FK5018014, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Benjamin J. Kaster
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- FK5018014 WI
Self-reported in NPPES; status is on the state search - Practice location
- 333 Pine Ridge Blvd, Wausau, WI 54401
- Phone
- (715) 847-2121
- Enumerated
- Jun 19, 2013
- Record last updated
- Aug 20, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151028003058); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 333 Pine Ridge Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alanna AmbrosiusPharmacist1558213330
- Katelin BagleyOncology Registered Nurse1194678284
- Victoria BallardGenetic Counselor (M.S.)1942872791
Verify Benjamin J. Kaster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license FK5018014Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average family medicine physician in 2024
577 Medicare Part D claims for 116 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Metoprolol Succinate63 claims
- Atorvastatin Calcium62 claims
- Jardiance26 claims
- Furosemide21 claims
- Buprenorphine-Naloxone20 claims
- Amlodipine Besylate16 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): 83.7 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Aspirus Wausau Hospital IncWausau, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin J. Kaster among 3,765 family medicine physician records in Wisconsin
Benjamin J. Kaster, M.D. is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2012 · median 2007 among the 2,347 with a school on file
- Record last updated2016 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
63 family medicine physician records list a practice address in Wausau
They are 63 of the 1,958 NPPES records with a practice address in Wausau, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Wausau → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Andrew Buchl, MDWausau, WI 544011215924626
- Glenn Burt, MDWausau, WI 544011891796553
- Wendy Hanneman, MDWausau, WI 544011740210038
- Antoinette Hayek, M.DWausau, WI 544011255390209
- Robin Henley, DOWausau, WI 544011710982723
- David Jenkins, MDWausau, WI 544011831129444
- Ross Lange, MDWausau, WI 544011396778270
- Kay Lockwood, MDWausau, WI 544011487686820
Common questions
What is Benjamin J. Kaster, M.D.'s NPI number?
Benjamin J. Kaster, M.D.'s National Provider Identifier (NPI) is 1881033298, issued on Jun 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin J. Kaster, M.D. located?
The NPPES record lists a practice address at 333 Pine Ridge Blvd, Wausau, WI, 54401. Phone: (715) 847-2121. Providers update this record themselves, so call before visiting.
How can I verify Benjamin J. Kaster, M.D.'s license?
NPPES lists Wisconsin license number FK5018014, 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 Benjamin J. Kaster, M.D. prescribe under Medicare Part D?
In 2024, Benjamin J. Kaster, M.D. had 577 Medicare Part D claims for 116 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Benjamin J. Kaster, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.7 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.