Karl P. Undesser, MD
Clinical Cardiac Electrophysiology Physician · Caldwell, ID
Karl P. Undesser, MD is a clinical cardiac electrophysiology physician with a practice address in Caldwell, Idaho, and NPI 1013961242, issued on May 20, 2006. Check the license (Idaho M6986, as entered in NPPES) on the Idaho Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Karl P. Undesser
- Credential
- MD
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- M6986 ID
Self-reported in NPPES; status is on the state search - Practice location
- 1906 Fairview Ave Ste 230, Caldwell, ID 83605
- Phone
- (208) 795-5073
- Enumerated
- May 20, 2006
- Record last updated
- Jan 27, 2022
- Fax
- (208) 402-3181
- Medicaid ID
- 1013961242 ID
- Medicare enrollment
- Enrolled (PECOS I20061206000258); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1989
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 15 in Idaho → Look up another NPI →
Also registered at 1906 Fairview Ave Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lyndon Box, MDInterventional Cardiology Physician1174620512
- Hannah Cliff, PA-CPhysician Assistant1336952662
- Linnae Frisby, NPFamily Nurse Practitioner1780303966
- Christina Jones, DNP-FNPFamily Nurse Practitioner1699529107
- Steven Koga, M.D.Internal Medicine Physician1144275512
- Joe Llenos, MDFamily Medicine Physician1003073560
Verify Karl P. Undesser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license M6986Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average clinical cardiac electrophysiology physician in 2024
6,018 Medicare Part D claims for 857 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Eliquis1,125 claims
- Metoprolol Succinate528 claims
- Sotalol515 claims
- Losartan Potassium386 claims
- Amlodipine Besylate282 claims
- Lisinopril249 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.
The MIPS final score for 2023 (Medicare payment program): 99.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,618.29
43 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 3,167 providers of this specialty with any payment received $10,651.37 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
- West Valley Medical Group Specialty Services LLCCaldwell, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karl P. Undesser among 15 clinical cardiac electrophysiology physician records in Idaho
Karl P. Undesser, MD is one of 15 clinical cardiac electrophysiology physician records with a practice address in Idaho. 100% 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 0% of them.
- NPI issued2006 · 0% of these records are older, 47% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 100% of these records are
- Graduated1989 · median 1999 among the 15 with a school on file
- Record last updated2022 · 27% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Idaho
There are 15 clinical cardiac electrophysiology physician records in Idaho.
All 15 in Idaho → Every provider in Caldwell → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Luciano Amado, MDBoise, ID 837021205035961
- Joshua Mozes, MDBoise, ID 837021679733414
- Daniel Noonan, MDBoise, ID 837021942474853
- Justice Oranefo, M.D.Boise, ID 837021467804302
- Adam Grimaldi, M.D.Boise, ID 837041730422296
- Petar Igic, MDBoise, ID 837041053365494
- Walter Seale, MDBoise, ID 837041720033459
- Marcos Daccarett, MDBoise, ID 837121023144300
Common questions
What is Karl P. Undesser, MD's NPI number?
Karl P. Undesser, MD's National Provider Identifier (NPI) is 1013961242, issued on May 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karl P. Undesser, MD located?
The NPPES record lists a practice address at 1906 Fairview Ave Ste 230, Caldwell, ID, 83605. Phone: (208) 795-5073. Providers update this record themselves, so call before visiting.
How can I verify Karl P. Undesser, MD's license?
NPPES lists Idaho license number M6986, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karl P. Undesser, MD prescribe under Medicare Part D?
In 2024, Karl P. Undesser, MD had 6,018 Medicare Part D claims for 857 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. Part D covers Medicare prescriptions only.
What is Karl P. Undesser, MD's MIPS final score?
The 2023 MIPS final score is 99.3 of 100. 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.