Debra Muggler, M.D.
Internal Medicine Physician · Waukesha, WI
Debra Muggler, M.D. is an internal medicine physician with a practice address in Waukesha, Wisconsin, and NPI 1942274055, issued on Feb 15, 2006. Check the license (Wisconsin 41103, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Debra Muggler
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 41103 WI
Self-reported in NPPES; status is on the state search - Practice location
- N16W24131 Riverwood Dr, Waukesha, WI 53188
- Phone
- (262) 696-5690
- Enumerated
- Feb 15, 2006
- Record last updated
- Dec 27, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 32567200 WI
- Medicare enrollment
- Enrolled (PECOS I20050519000382); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at N16W24131 Riverwood Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abigail Boesl, AUDAudiologist1558256115
- Christopher Burnett, MDMOHS-Micrographic Surgery Physician1780863779
- Kathleen Bussen, PTPhysical Medicine & Rehabilitation Physician1285133504
- Ryan Condon, MS, LCGCGenetic Counselor (M.S.)1003601295
- Katie DammenAdult Health Nurse Practitioner1083449441
- Laura GildersleevePhysician Assistant1356074850
Verify Debra Muggler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 41103Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,709 Medicare Part D claims for 551 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 55 claims were for opioids.
Most prescribed
- Atorvastatin Calcium647 claims
- Levothyroxine Sodium393 claims
- Amlodipine Besylate335 claims
- Alendronate Sodium332 claims
- Rosuvastatin Calcium331 claims
- Simvastatin232 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 2 group practices
- Presbyterian Homes OF Wisconsin IncWaukesha, WI
- Prohealth Medical Group IncOconomowoc, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Debra Muggler among 2,078 internal medicine physician records in Wisconsin
Debra Muggler, M.D. is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1995 · median 2002 among the 1,098 with a school on file
- Record last updated2017 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 internal medicine physician records list a practice address in Waukesha
They are 42 of the 2,814 NPPES records with a practice address in Waukesha, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Waukesha → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gerald Berman, M.D.Waukesha, WI 531881215909734
- William Boehm, M.D.Waukesha, WI 531881346213519
- Wendy Cooper, M.D.Waukesha, WI 531881720051824
- Thomas Dougherty, MDWaukesha, WI 531881487639902
- John Fish, M.D.Waukesha, WI 531881033188446
- Thomas Gallagher, M.D.Waukesha, WI 531881942273677
- Peter Geiss, M.D.Waukesha, WI 531881881666782
- Martin Kern, MDWaukesha, WI 531881215938758
Common questions
What is Debra Muggler, M.D.'s NPI number?
Debra Muggler, M.D.'s National Provider Identifier (NPI) is 1942274055, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Debra Muggler, M.D. located?
The NPPES record lists a practice address at N16W24131 Riverwood Dr, Waukesha, WI, 53188. Phone: (262) 696-5690. Providers update this record themselves, so call before visiting.
How can I verify Debra Muggler, M.D.'s license?
NPPES lists Wisconsin license number 41103, 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.
How much does Debra Muggler, M.D. prescribe under Medicare Part D?
In 2024, Debra Muggler, M.D. had 6,709 Medicare Part D claims for 551 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.