Arthur Mark Altbuch, M.D.
Geriatric Medicine (Family Medicine) Physician · Janesville, WI
Arthur Mark Altbuch, M.D. is a geriatric medicine (family medicine) physician with a practice address in Janesville, Wisconsin, and NPI 1821021429, issued on Jul 8, 2006. Check the license (Wisconsin 41950, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Arthur Mark Altbuch
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License numbers
- 41950 WI
30493 FL
30494 FL
Self-reported in NPPES; status is on the state search - Practice location
- 849 Kellogg Ave, Janesville, WI 53546
- Phone
- (608) 755-7960
- Enumerated
- Jul 8, 2006
- Record last updated
- Mar 7, 2023
- Medicaid ID
- 32631600 WI
- Medicare enrollment
- Enrolled (PECOS I20040903001225); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 1976
- Entity
- Type 1 · individual
8 nearest geriatric medicine (family medicine) physician records → All 17 in Wisconsin → Look up another NPI →
Also registered at 849 Kellogg Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raphael Agbavitor, MDStudent in an Organized Health Care Education/Training Program1538009212
- Fayyaz Ahmed, MDFamily Medicine Physician1760273049
- Melissa Amertil, MDStudent in an Organized Health Care Education/Training Program1174814859
- Jane Anderson, MDFamily Medicine Physician1942220140
- Sama AzeezStudent in an Organized Health Care Education/Training Program1679400915
- Meryum Baig, MDStudent in an Organized Health Care Education/Training Program1750107579
Verify Arthur Mark Altbuch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 41950Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024
162 Medicare Part D claims for 47 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium11 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
- Mercy Health System CorporationJanesville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Arthur Mark Altbuch among 17 geriatric medicine (family medicine) physician records in Wisconsin
Arthur Mark Altbuch, M.D. is one of 17 geriatric medicine (family medicine) physician records with a practice address in Wisconsin. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 18% of them.
- NPI issued2006 · 18% of these records are older, 59% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1976 · median 2013 among the 10 with a school on file
- Record last updated2023 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Family Medicine) Physician providers in Wisconsin
There are 17 geriatric medicine (family medicine) physician records in Wisconsin.
All 17 in Wisconsin → Every provider in Janesville → Geriatric Medicine (Family Medicine) Physician nationwide →
The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- David Rebedew, MDMonroe, WI 535661184966509
- Melissa Ricker-Bouche, MDSun Prairie, WI 535901184253775
- Irene Hamrick, MDFitchburg, WI 537111801888623
- John Trimberger, M.D.Milwaukee, WI 532151649616335
- Jean FrizzellWest Bend, WI 530951871675603
- Monica Stout, M.D.Hartford, WI 530271922493576
- Sarwat Jabeen, M.D.Marinette, WI 541431710186705
- Tracy Sherman, M.D.Two Rivers, WI 542411437373586
Common questions
What is Arthur Mark Altbuch, M.D.'s NPI number?
Arthur Mark Altbuch, M.D.'s National Provider Identifier (NPI) is 1821021429, issued on Jul 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Arthur Mark Altbuch, M.D. located?
The NPPES record lists a practice address at 849 Kellogg Ave, Janesville, WI, 53546. Phone: (608) 755-7960. Providers update this record themselves, so call before visiting.
How can I verify Arthur Mark Altbuch, M.D.'s license?
NPPES lists Wisconsin license number 41950, 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 Arthur Mark Altbuch, M.D. prescribe under Medicare Part D?
In 2024, Arthur Mark Altbuch, M.D. had 162 Medicare Part D claims for 47 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.