Perka Iordanova Guenev, M.D.
Family Medicine Physician · Janesville, WI
Perka Iordanova Guenev, M.D. is a family medicine physician with a practice address in Janesville, Wisconsin, and NPI 1205934254, issued on Sep 20, 2006. Check the license on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Perka Iordanova Guenev
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036-121159 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3200 E Racine St, Janesville, WI 53546
- Phone
- (608) 371-8000
- Enumerated
- Sep 20, 2006
- Record last updated
- Apr 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (608) 371-8945
- Medicaid ID
- 1205934254 WI
- Medicare enrollment
- Enrolled (PECOS I20210113000798); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 3200 E Racine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jenny Amani, M.D.Occupational Medicine Physician1629212899
- Molly ArttusPhysician Assistant1366233041
- Brittany Austin, PA-CMedical Physician Assistant1013226968
- Timothy Axe, DPMPodiatrist1619932621
- Susan Baird, DNP, APRN, FNP-BCNurse Practitioner1225305758
Verify Perka Iordanova Guenev in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family medicine physician in 2024
420 Medicare Part D claims for 303 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin66 claims
- Prednisone60 claims
- Amoxicillin-Clavulanate Potass42 claims
- Ciprofloxacin Hcl36 claims
- Doxycycline Hyclate27 claims
- Ofloxacin19 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.
Bills Medicare through one group practice
- Dean Health Systems IncJanesville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Perka Iordanova Guenev among 3,765 family medicine physician records in Wisconsin
Perka Iordanova Guenev, M.D. is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% 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 · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1995 · median 2007 among the 2,347 with a school on file
- Record last updated2021 · 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 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
73 family medicine physician records list a practice address in Janesville
They are 73 of the 1,538 NPPES records with a practice address in Janesville, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Janesville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jane Anderson, MDJanesville, WI 535461942220140
- Leslie Bernstein, MDJanesville, WI 535461447296876
- Ronald Bowers, MDJanesville, WI 535461265446355
- Janet Dabson, MDJanesville, WI 535461083797716
- Debra Ewing, DOJanesville, WI 535461619984127
- Brett Goettsch, MDJanesville, WI 535461396787594
- John Keener, MDJanesville, WI 535461578539086
- Eric Lyerla, MDJanesville, WI 535461952353047
Common questions
What is Perka Iordanova Guenev, M.D.'s NPI number?
Perka Iordanova Guenev, M.D.'s National Provider Identifier (NPI) is 1205934254, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Perka Iordanova Guenev, M.D. located?
The NPPES record lists a practice address at 3200 E Racine St, Janesville, WI, 53546. Phone: (608) 371-8000. Providers update this record themselves, so call before visiting.
How can I verify Perka Iordanova Guenev, M.D.'s license?
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.
How much does Perka Iordanova Guenev, M.D. prescribe under Medicare Part D?
In 2024, Perka Iordanova Guenev, M.D. had 420 Medicare Part D claims for 303 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.