NPPES file of Aug 9, 2026

Karsten H. Fliegner, MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Pontiac, MI

Karsten H. Fliegner, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Pontiac, Michigan, and NPI 1932211398, issued on Aug 31, 2006. Check the license (Michigan 4301078878, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932211398
Name
Karsten H. Fliegner
Credential
MD
Primary taxonomy
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
License number
4301078878 MI
Self-reported in NPPES; status is on the state search
Practice location
44555 Woodward Ave Ste 506, Pontiac, MI 48341
Phone
(248) 858-3850
Enumerated
Aug 31, 2006
Record last updated
Oct 2, 2024
Fax
(248) 858-3833
Medicare enrollment
Enrolled (PECOS I20040204000866); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 44555 Woodward Ave Ste 506

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Charles Schwartz, M.D.Surgery Physician1134115785
  2. Marc Silver, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1285746610

Verify Karsten H. Fliegner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301078878
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

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The practice group's MIPS final score for 2023 (Medicare payment program): 39.7 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.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costout of 100 · 30%69.2
  3. Promoting interoperabilityout of 100 · 25%0.0
  4. Improvement activities30 of 40 points · 15%75.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $188.12

2 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Karsten Fliegner$188.12
  2. Specialty average$7,828.84

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Iha Health Services CorporationLivonia, MI
  2. Iha Olma Specialty Services LLCRochester Hills, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Karsten H. Fliegner among 208 thoracic surgery (cardiothoracic vascular surgery) physician records in Michigan

Karsten H. Fliegner, MD is one of 208 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Michigan. 78% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 46% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated1993 · median 1998 among the 135 with a school on file
  • Record last updated2024 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Michigan

There are 208 thoracic surgery (cardiothoracic vascular surgery) physician records in Michigan.

The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes

  1. Dimitrios Apostolou, M.D.Pontiac, MI 483411851310718
  2. Ingida Asfaw, M.D.Pontiac, MI 483411225057284
  3. James Caralis, D.O.Pontiac, MI 483411902829930
  4. William Gordon, M.D.Pontiac, MI 483411578585659
  5. Marc Silver, MDPontiac, MI 483411285746610
  6. George Jennings, DOFarmington Hills, MI 483361255423620
  7. George Comas, MDSterling Heights, MI 483141578715454
  8. Shahrokh Mansoori, MDRochester Hills, MI 483071053334177

Common questions

What is Karsten H. Fliegner, MD's NPI number?

Karsten H. Fliegner, MD's National Provider Identifier (NPI) is 1932211398, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Karsten H. Fliegner, MD located?

The NPPES record lists a practice address at 44555 Woodward Ave Ste 506, Pontiac, MI, 48341. Phone: (248) 858-3850. Providers update this record themselves, so call before visiting.

How can I verify Karsten H. Fliegner, MD's license?

NPPES lists Michigan license number 4301078878, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Karsten H. Fliegner, MD's MIPS final score?

The 2023 MIPS final score is 39.7 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.