Thomas Tackman, MD
Internal Medicine Physician · Fort Atkinson, WI
Thomas Tackman, MD is an internal medicine physician with a practice address in Fort Atkinson, Wisconsin, and NPI 1902802416, issued on Jun 21, 2005. Check the license (Wisconsin 30509, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Tackman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 30509 WI
Self-reported in NPPES; status is on the state search - Practice location
- 611 Sherman Ave E, Fort Atkinson, WI 53538
- Phone
- (920) 563-5571
- Enumerated
- Jun 21, 2005
- Record last updated
- Dec 17, 2025
- Fax
- (920) 563-7705
- Medicare enrollment
- Enrolled (PECOS I20070720000859); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1988
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 611 Sherman Ave E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ailleen Alquinto Anonuevo, M.D.Internal Medicine Physician1417900143
- Michael Anderson, M.D.Otolaryngology Physician1588685077
- Lisa Ashwill, RDN, CDRegistered Dietitian1689217580
- Jonathan Beck, DNP, CRNACertified Registered Nurse Anesthetist1831648989
- Debra Bingham, CRNACertified Registered Nurse Anesthetist1154479889
- James Brown, P.A.Physician Assistant1831179910
Verify Thomas Tackman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 30509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.7 times the Medicare Part D claims of the average internal medicine physician in 2024
14,880 Medicare Part D claims for 948 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 91 claims were for opioids.
Most prescribed
- Omeprazole792 claims
- Levothyroxine Sodium746 claims
- Atorvastatin Calcium717 claims
- Amlodipine Besylate665 claims
- Metoprolol Succinate501 claims
- Lisinopril496 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
- Fort Healthcare IncFort Atkinson, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Tackman among 2,078 internal medicine physician records in Wisconsin
Thomas Tackman, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1988 · median 2002 among the 1,098 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Fort Atkinson
They are 9 of the 361 NPPES records with a practice address in Fort Atkinson, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Fort Atkinson → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ailleen Alquinto Anonuevo, M.D.Fort Atkinson, WI 535381417900143
- William Cannon, MDFort Atkinson, WI 535381912971243
- Nathaniel Fullerton, MDFort Atkinson, WI 535381366417461
- Jennifer Klenske, MDFort Atkinson, WI 535381841350022
- Laura Koenig, M.D.Fort Atkinson, WI 535381700881869
- Kenneth Miller, MDFort Atkinson, WI 535381962543496
- Monica Sharma, MDFort Atkinson, WI 535381962084723
- Jennifer Winter, MDFort Atkinson, WI 535381174726038
Common questions
What is Thomas Tackman, MD's NPI number?
Thomas Tackman, MD's National Provider Identifier (NPI) is 1902802416, issued on Jun 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Tackman, MD located?
The NPPES record lists a practice address at 611 Sherman Ave E, Fort Atkinson, WI, 53538. Phone: (920) 563-5571. Providers update this record themselves, so call before visiting.
How can I verify Thomas Tackman, MD's license?
NPPES lists Wisconsin license number 30509, 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 Thomas Tackman, MD prescribe under Medicare Part D?
In 2024, Thomas Tackman, MD had 14,880 Medicare Part D claims for 948 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.