Dr. Thomas Michael Shimshak, MD

  • Sebring, FL
  • Interventional cardiologist
NPI1467567941PAC ID4789660515
Medicare services, 2024
709
Medicare patients, 2024
255
Part D claims, 2024
250
Publications
48
Clinical trials
3
Practice address
4200 Sun N Lake Blvd, Sebring, FL 33872
Practice phone
Call (863) 314-4466
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

AdventHealth Sebring

Hospital · Sebring, Florida

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Dr. Thomas Michael Shimshak is an interventional cardiologist in Sebring, Florida

Dr. Shimshak practices at AdventHealth Sebring in Sebring, Florida, part of AdventHealth.

Dr. Shimshak's NPI, 1467567941, was assigned on August 21, 2006. Dr. Shimshak graduated from Medical College Of Wisconsin in 1980. Dr. Shimshak holds Florida license ME122398.

NPI and contact details
Medicare PAC ID
4789660515
NPI enumeration date
August 21, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(863) 314-4466
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
72
Medical school graduation
1980

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Thomas Michael Shimshak practices at AdventHealth Sebring in Sebring, Florida

Dr. Shimshak's primary practice is AdventHealth Sebring, at 4200 Sun N Lake Blvd, Sebring, FL 33872 in Highlands County. The practice phone is (863) 314-4466.

  • AdventHealth Sebring
    4200 Sun N Lake Blvd, Sebring, FL 33872 · Highlands CountyPhone(863) 314-4466

Source: Dmand AI Affiliation Data

Dr. Thomas Michael Shimshak is affiliated with 4 sites of care and 1 medical group

Dr. Shimshak's primary practice is AdventHealth Sebring in Sebring, Florida, part of AdventHealth. Dr. Shimshak is also affiliated with BayCare Winter Haven Hospital. The medical group on file is AdventHealth Cancer Institute Sebring. Dmand AI also links Dr. Shimshak to 1 more hospital and 1 group practice or clinic, each named with a free account.

See all 5 affiliations for Dr. Shimshak

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Thomas Michael Shimshak's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shimshak practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
AdventHealth SebringAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Thomas Michael Shimshak is one of 585 interventional cardiologists in Florida

Interventional cardiology is Dr. Shimshak's primary specialty in the NPI Registry, under taxonomy code 207RI0011X. Dr. Shimshak is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Shimshak's licenses on file in 4 states: Florida, Wisconsin, Pennsylvania and Ohio.

Specialties and state licenses

  • Interventional cardiology, FloridaPrimaryLicense ME122398 · 2014 to 2027 · taxonomy 207RI0011X
  • Wisconsin license1981 to 2017
  • Pennsylvania license2002 to 2010
  • Ohio license1998 to 2008

Clinical focus

Dmand AI lists angioplasty, cardiac catheterization and leg revascularization among the conditions Dr. Shimshak treats.

Interventional cardiologists near Dr. Shimshak

Counts of interventional cardiologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Thomas Michael Shimshak billed Medicare for 709 services in 2024

CMS data shows 709 Medicare services from Dr. Shimshak across 13 procedure codes in 2024, for 255 Medicare patients. Medicare paid $93,635 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024709
Medicare patients255
Paid by Medicare$93,635
Procedure codes13

Dr. Shimshak's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 8602024: 46945%
Office and hospital visits
2023: 2942024: 24018%
Imaging
2023: 202024: 0100%
Surgery
2023: 382024: 0100%

Dr. Shimshak compared with the Florida median for interventional cardiologists, 2024

  • Dr. Shimshak
  • Florida median
Medicare services
709vs 2,52472% below
Medicare patients
255vs 78067% below
Part D claims
114vs 1,96294% below

Medians across 578 interventional cardiologists in Florida with Dmand AI profiles that report each measure.

Dr. Shimshak's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Shimshak

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Thomas Michael Shimshak treated 255 Medicare patients in 2024, average age 77

CMS counts 255 Medicare patients who saw Dr. Shimshak in 2024. The largest group is 75 to 84, with 119 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.79, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Shimshak's median patient age at 76, with 39% women.

Medicare patients, 2024255
Average age77
Average risk score1.79
Also on Medicaid9%

Dr. Shimshak's Medicare patients by age, 2024

Dr. Shimshak's Medicare patients by sex, 2024

  • Women11746%
  • Men13854%

Chronic conditions among Dr. Shimshak's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Ischemic heart disease75%
  4. Arthritis57%
  5. Diabetes50%
  6. Chronic kidney disease49%
  7. Heart failure48%
  8. Atrial fibrillation33%

Share of Medicare patients with each condition. A patient can have several.

Dr. Shimshak's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 76

Patient panel by sex, all payers

  • Women39%
  • Men61%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Thomas Michael Shimshak wrote 250 Medicare Part D claims in 2024

In 2024, Dr. Shimshak wrote 250 Medicare Part D claims for 101 patients. 88% of them were for generic drugs. CMS names the drug for 114 of them, across 1 drug with 11 or more claims each, at $979 in total drug cost. In 2023, CMS named 112 claims across 2 drugs.

Part D claims, 2024250
Drugs named by CMS1
Total drug cost$979
Part D patients101

Dr. Shimshak's Part D claims by kind of drug, 2024

  • Generic219 claims88%
  • Brand-name and other31 claims12%

Dr. Shimshak's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1122024: 1142%

Drugs named by CMS: 1 in 2024, 2 in 2023.

See all prescribing by Dr. Shimshak

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Thomas Michael Shimshak scored 75 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Shimshak for performance year 2024, reported as part of a group. Dr. Shimshak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 85 procedures of coronary angioplasty and stenting by Dr. Shimshak, more than 95% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
MIPS final score, 2024
75 of 100

Where Dr. Shimshak ranks in Medicare procedure volume

Coronary angioplasty and stenting
95th percentile85 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Leg revascularization (restoring blood flow): 1 to 10 procedures (CMS shows small counts as a range)

Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Thomas Michael Shimshak has 48 publications on record

Dmand AI links 48 papers to Dr. Shimshak, published from 2017 to 2024. 2023 was the busiest year, with 3. The most frequent topics are Angioplasty, Balloon, Coronary, Coronary Disease and Abciximab. Dr. Shimshak has published most often in Am J Cardiol. Dr. Shimshak's most frequent co-authors are Chad K. Brands, MD, Eric J. Dippel, MD and Malcolm Tennyson Foster, MD.

Papers48
Years published2017 to 2024

Dr. Shimshak's papers by year, 2017 to 2024

Topics Dr. Shimshak writes about most

  • Angioplasty, Balloon, Coronary
  • Coronary Disease
  • Abciximab
  • Antibodies, Monoclonal
  • Coronary Artery Bypass
  • Immunoglobulin Fab Fragments
  • Platelet Aggregation Inhibitors
  • Myocardial Infarction

Dr. Shimshak's most frequent co-authors

Recent publications by Dr. Shimshak

See all 48 publications and co-authors

See who Dr. Shimshak researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Shimshak works with, so you can find a warm path to the right interventional cardiologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Thomas Michael Shimshak has worked on 3 clinical trials

Dmand AI links Dr. Shimshak to 3 clinical trials. 1 is still active or recruiting. Conditions studied include Peripheral Arterial Disease and Peripheral Vascular Diseases.

Clinical trials with Dr. Shimshak by phase

  1. NonePhase 1: no trials
  2. NonePhase 2: no trials
  3. 1Phase 2/3: 1 trial
  4. NonePhase 3: no trials
  5. 1Phase 4: 1 trial

Conditions in Dr. Shimshak's trials

  • Peripheral Arterial Disease
  • Peripheral Vascular Diseases

Investigators on the most trials with Dr. Shimshak

Recent clinical trials with Dr. Shimshak

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Thomas Michael Shimshak received $158,646 in industry payments from 2016 to 2025

CMS Open Payments shows 360 general payments to Dr. Shimshak from 31 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 79% of the total. Boston Scientific Corporation paid the most, $128,144.

General payments to Dr. Shimshak by program year, 2016 to 2025

General payments to Dr. Shimshak by kind, 2016 to 2025

$158.6Kin total
  • Speaker and faculty fees$125,07579%
  • Consulting fees$15,11310%
  • Travel and lodging$10,2006%
  • Food and beverage$8,0835%
  • Gifts$1750%

Companies that paid Dr. Shimshak the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Shimshak

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Thomas Michael Shimshak has 3 awards and honors on record

Dmand AI lists 3 awards for Dr. Shimshak, most recently NCQA HSRP in 2017.

Awards and honors for Dr. Shimshak

  1. 2017
    • NCQA HSRP
  2. 2015
    • CMS Stage 1 EHR
  3. Undated
    • ACC Fellow

Source: Dmand AI Professional Profile Data

Dr. Thomas Michael Shimshak graduated from Medical College Of Wisconsin

Dr. Shimshak graduated from Medical College Of Wisconsin in 1980.

  1. Medical schoolMedical College Of Wisconsin
  2. Board certified in cardiovascular diseaseAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Thomas Michael Shimshak accepts plans from 18 insurance carriers

Dr. Shimshak is in network with 18 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.

Plan types Dr. Shimshak accepts, by number of carriers

  1. Medicare10
  2. PPO10
  3. HMO9
  4. POS6
  5. EPO4
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Thomas Michael Shimshak's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Thomas Michael Shimshak

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Thomas Michael Shimshak's NPI number?

Dr. Thomas Michael Shimshak's NPI number is 1467567941. It was assigned on August 21, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Thomas Michael Shimshak?

Dr. Thomas Michael Shimshak is an interventional cardiologist in Sebring, Florida. The primary specialty in the NPI Registry is Interventional Cardiology Physician (taxonomy code 207RI0011X).

Where does Dr. Thomas Michael Shimshak practice?

Dr. Shimshak practices at 4200 Sun N Lake Blvd, Sebring, FL 33872. Dr. Shimshak's primary practice is AdventHealth Sebring in Sebring, Florida, part of AdventHealth. Dmand AI also links Dr. Shimshak to 1 hospital and 1 group practice or clinic.

What is Dr. Thomas Michael Shimshak's office phone number?

The practice phone on file for Dr. Shimshak is (863) 314-4466.

What is Dr. Thomas Michael Shimshak's medical license number?

Dr. Shimshak holds Florida license ME122398, one of the licenses on file in 4 states.

Which states has Dr. Thomas Michael Shimshak been licensed in?

Dmand AI has state licenses on file for Dr. Shimshak in Florida (2014 to 2027), Wisconsin (1981 to 2017), Pennsylvania (2002 to 2010) and Ohio (1998 to 2008).

Which hospitals is Dr. Thomas Michael Shimshak affiliated with?

Dr. Shimshak practices at AdventHealth Sebring in Sebring, Florida. Dr. Shimshak is also affiliated with BayCare Winter Haven Hospital. Dmand AI links Dr. Shimshak to 1 more hospital.

What medical group is Dr. Thomas Michael Shimshak part of?

Dr. Shimshak is linked to AdventHealth Cancer Institute Sebring.

Does Dr. Thomas Michael Shimshak accept Medicare?

Yes. CMS data shows Dr. Shimshak billed Medicare for 709 services in 2024, and Dr. Shimshak accepts Medicare assignment.

What is Dr. Thomas Michael Shimshak's MIPS score?

Dr. Shimshak's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Thomas Michael Shimshak see?

CMS counts 255 Medicare patients who saw Dr. Shimshak in 2024, with an average age of 77.

Is Dr. Thomas Michael Shimshak board certified?

Yes. Dr. Shimshak is board certified in cardiovascular disease by the American Board of Internal Medicine.

What services does Dr. Thomas Michael Shimshak bill to Medicare?

In 2024, Dr. Shimshak's most billed Medicare services were special service (99152), heart test or procedure (93458) and heart test or procedure (92928).

Where did Dr. Thomas Michael Shimshak go to medical school?

Dr. Shimshak graduated from Medical College Of Wisconsin in 1980.

What drugs does Dr. Thomas Michael Shimshak prescribe most?

In 2024 Medicare Part D data, Dr. Shimshak's most prescribed drugs by claims were Clopidogrel.

Has Dr. Thomas Michael Shimshak received payments from drug or device companies?

CMS Open Payments shows $158,646 in general payments to Dr. Shimshak from 31 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.

How long has Dr. Thomas Michael Shimshak been practicing?

Dr. Shimshak graduated from medical school in 1980, 46 years ago.

Does Dr. Thomas Michael Shimshak do research?

Dmand AI links 48 publications to Dr. Shimshak, published from 2017 to 2024. Dr. Shimshak has worked on 3 clinical trials.

Who does Dr. Thomas Michael Shimshak publish with?

Dr. Shimshak's most frequent co-authors are Chad K. Brands, MD (5 shared papers), Eric J. Dippel, MD (3 shared papers) and Malcolm Tennyson Foster, MD (3 shared papers).

What insurance does Dr. Thomas Michael Shimshak accept?

Dr. Shimshak is in network with 18 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.

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