Dr. Thomas Tackman , MD
Internal Medicine • Fort Atkinson, WI
611 Sherman Ave E
Fort Atkinson, WI 535381960
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. Thomas Tackman is listed in NPPES under Internal Medicine.
-
NPI assigned on June 21, 2005; this date does not establish years in practice.
-
Published CMS data list 11 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 93227 — Electrocardiogram (ecg) 2-day continuous with review by health care professional: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table · Guide: How to read Medicare Part B data
-
Published CMS data list 14,179 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Omeprazole — 792 prescription fills, including refills.
- Levothyroxine Sodium — 746 prescription fills, including refills.
- Atorvastatin Calcium — 717 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 171 records in the table · Guide: How to read Medicare Part D prescriber data
-
Fewer Medicare Part B services than 95% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,004 clinicians with data). Median for this group: 572. Middle half: 268 to 1,020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 3,106 in 2017 to 11 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2024.
Practice Location & Contact Primary Location
611 Sherman Ave E
Fort Atkinson, WI 535381960
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Whitewater, WI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Fort Healthcare Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Medical College Of Wisconsin
1988
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
29 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $189 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $137 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
27,802 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,002,266 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
Years since graduation
38 years (graduated 1988)
CMS Doctors and Clinicians data list 1988 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Tackman has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Tackman as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Fort Atkinson and Wisconsin
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 95% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,004 clinicians with data). Median for this group: 572. Middle half: 268 to 1,020.
Too few clinicians listed under Internal Medicine in Fort Atkinson have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,004 clinicians with data). Median for this group: $49,221. Middle half: $25,275 to $85,651.
Too few clinicians listed under Internal Medicine in Fort Atkinson have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,004 clinicians with data). Median for this group: $38,029. Middle half: $18,692 to $65,342.
Too few clinicians listed under Internal Medicine in Fort Atkinson have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,161 clinicians with data). Median for this group: 2,267. Middle half: 141 to 7,633.
Too few clinicians listed under Internal Medicine in Fort Atkinson have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Internal Medicine in Wisconsin (2024, 1,161 clinicians with data). Median for this group: $177,212. Middle half: $8,078 to $595,254.
Too few clinicians listed under Internal Medicine in Fort Atkinson have Medicare Part D data for 2024 to compare.
9 active clinicians are listed under Internal Medicine with a practice address in Fort Atkinson, WI (2,083 in Wisconsin).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services decreased 100% from 3,106 in 2017 to 11 in 2024.
- 2017: 3,106
- 2018: 2,801
- 2019: 63
- 2024: 11
-
Medicare-allowed amount
Medicare-allowed amount decreased 100% from $138,679 in 2017 to $189 in 2024.
- 2017: $138,679
- 2018: $116,243
- 2019: $659
- 2024: $189
-
Paid by Medicare
Paid by Medicare decreased 100% from $92,660 in 2017 to $137 in 2024.
- 2017: $92,660
- 2018: $76,386
- 2019: $517
- 2024: $137
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 23% from 18,525 in 2020 to 14,179 in 2024.
- 2020: 18,525
- 2021: 17,442
- 2022: 16,504
- 2023: 15,133
- 2024: 14,179
-
30-day fills
30-day fills decreased 15% from 32,640 in 2020 to 27,802 in 2024.
- 2020: 32,640
- 2021: 32,224
- 2022: 31,310
- 2023: 29,356
- 2024: 27,802
-
Part D drug cost
Part D drug cost stayed about the same: $1,078,617 in 2020 and $1,002,266 in 2024.
- 2020: $1,078,617
- 2021: $1,087,598
- 2022: $1,142,419
- 2023: $1,269,994
- 2024: $1,002,266
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
93227
Electrocardiogram (ecg) 2-day continuous with review by health care professional
|
11 | 11 | $159.91 | $17.19 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Omeprazole | Omeprazole | 792 | 48,134 | $10,385.72 | 187 |
| Levothyroxine Sodium | Levothyroxine Sodium | 746 | 39,634 | $7,918.16 | 144 |
| Atorvastatin Calcium | Atorvastatin Calcium | 717 | 49,492 | $7,406.42 | 202 |
| Amlodipine Besylate | Amlodipine Besylate | 665 | 45,996 | $4,623.20 | 169 |
| Metoprolol Succinate | Metoprolol Succinate | 501 | 32,478 | $6,999.79 | 130 |
| Lisinopril | Lisinopril | 496 | 35,678 | $3,396.64 | 134 |
| Tamsulosin Hcl | Tamsulosin Hcl | 479 | 31,262 | $7,588.92 | 121 |
| Gabapentin | Gabapentin | 414 | 21,162 | $7,742.60 | 110 |
| Famotidine | Famotidine | 311 | 17,265 | $5,209.23 | 61 |
| Sertraline Hcl | Sertraline Hcl | 298 | 16,774 | $2,559.81 | 73 |
| Losartan Potassium | Losartan Potassium | 292 | 19,671 | $2,809.58 | 73 |
| Metformin Hcl Er | Metformin Hcl | 286 | 19,007 | $2,228.38 | 81 |
| Metoprolol Tartrate | Metoprolol Tartrate | 282 | 17,604 | $1,796.37 | 74 |
| Simvastatin | Simvastatin | 279 | 21,337 | $2,209.09 | 85 |
| Eliquis | Apixaban | 272 | 13,492 | $259,083.60 | 57 |
| Metformin Hcl | Metformin Hcl | 268 | 18,400 | $2,577.56 | 69 |
| Furosemide | Furosemide | 247 | 12,885 | $1,121.13 | 63 |
| Hydrochlorothiazide | Hydrochlorothiazide | 223 | 16,223 | $869.45 | 66 |
| Finasteride | Finasteride | 199 | 11,020 | $2,661.27 | 36 |
| Trazodone Hcl | Trazodone Hcl | 181 | 10,003 | $1,406.37 | 52 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 170 | 12,754 | $2,277.20 | 50 |
| Pantoprazole Sodium | Pantoprazole Sodium | 169 | 9,821 | $1,768.18 | 40 |
| Potassium Chloride | Potassium Chloride | 166 | 7,880 | $4,659.70 | 29 |
| Warfarin Sodium | Warfarin Sodium | 164 | 10,506 | $1,768.66 | 33 |
| Allopurinol | Allopurinol | 157 | 13,209 | $1,693.62 | 47 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-12-17NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20070720000859
WI
9537260591
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Fort Healthcare Inc
1461 W Main St, Whitewater, WI 531901568
Phone: 2624735888
Fort Healthcare Inc
611 Sherman Ave E, Fort Atkinson, WI 535381960
Phone: 9205635571
Secondary Practice Locations
1461 W Main St
Whitewater, WI 531901568
Phone: 2624735888
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Advanced Practice Nurse Prescriber
Nurse Practitioner - Family
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 611 SHERMAN AVE E, FORT ATKINSON, WI 535381960 (Tel: 9205635571)
Registered at PO BOX 249, FORT ATKINSON, WI 535380249 (Tel: 9205635571)
Additional practice office at 1461 W Main St, Whitewater, WI 531901568
NPI status registered as active in NPPES database
Registered at 500 MCMILLEN ST, FORT ATKINSON, WI 535381233 (Tel: 9205635571)
Registered at 500 MCMILLEN ST, FORT ATKINSON, WI 535381233 (Tel: 9205635571)
Recorded as THOMAS TACKMAN, MD
Internal Medicine (license number reported to NPPES: WI 30509)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Fort Atkinson
- Dr. Monica Sharma, MD
- Dr. Jennifer Winter, MD
- Dr. Kenneth Miller, MD
- Dr. Jennifer Klenske, MD
- Dr. Laura Koenig, MD
- Dr. Ailleen Alquinto Anonuevo, MD
Mailing Address
Po Box 249
Fort Atkinson, WI 535380249
Phone: 9205635571