Karl Alexander Damroth, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Green Bay, WI
Karl Alexander Damroth, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Green Bay, Wisconsin, and NPI 1881125482, issued on Mar 24, 2017. Check the license (Wisconsin 86217-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Karl Alexander Damroth
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License numbers
- 86217-20 WI
71809 MN
Self-reported in NPPES; status is on the state search - Practice location
- 720 S Van Buren St Ste 303, Green Bay, WI 54301
- Phone
- (920) 433-9621
- Enumerated
- Mar 24, 2017
- Record last updated
- Aug 27, 2025
- Medicare enrollment
- Enrolled (PECOS I20251024000906); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2017
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 115 in Wisconsin → Look up another NPI →
Verify Karl Alexander Damroth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 86217-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $1,168.41
12 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bellin Memorial Hospital IncGreen Bay, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karl Alexander Damroth among 115 thoracic surgery (cardiothoracic vascular surgery) physician records in Wisconsin
Karl Alexander Damroth, M.D. is one of 115 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Wisconsin. 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 2017, is newer than 90% of them.
- NPI issued2017 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2017 · median 1993 among the 74 with a school on file
- Record last updated2025 · 56% 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 Wisconsin 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 Wisconsin
There are 115 thoracic surgery (cardiothoracic vascular surgery) physician records in Wisconsin.
All 115 in Wisconsin → Every provider in Green Bay → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- James Bailey, MDGreen Bay, WI 543011962936245
- Steven Gerndt, MDGreen Bay, WI 543011487667549
- Kevin Greer, MDGreen Bay, WI 543011609889757
- John Seccombe, MDGreen Bay, WI 543011922026780
- Paul Shen, MDGreen Bay, WI 543011831382423
- Fuad Zankoul, MDGreen Bay, WI 543011770100489
- Thomas Percival, MDGreen Bay, WI 543111982864435
- Alexander Roitstein, MDGreen Bay, WI 543111255358685
Common questions
What is Karl Alexander Damroth, M.D.'s NPI number?
Karl Alexander Damroth, M.D.'s National Provider Identifier (NPI) is 1881125482, issued on Mar 24, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Karl Alexander Damroth, M.D. located?
The NPPES record lists a practice address at 720 S Van Buren St Ste 303, Green Bay, WI, 54301. Phone: (920) 433-9621. Providers update this record themselves, so call before visiting.
How can I verify Karl Alexander Damroth, M.D.'s license?
NPPES lists Wisconsin license number 86217-20, 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.
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.