Michelle Asuncion-Castor, DO
Family Medicine Physician · New Berlin, WI
Michelle Asuncion-Castor, DO is a family medicine physician with a practice address in New Berlin, Wisconsin, and NPI 1952044075, issued on Apr 16, 2022. Check the license (Wisconsin 81459-21, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michelle Asuncion-Castor
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 81459-21 WI
Self-reported in NPPES; status is on the state search - Practice location
- 14555 W National Ave, New Berlin, WI 53151
- Phone
- (262) 827-3636
- Enumerated
- Apr 16, 2022
- Record last updated
- Oct 21, 2025
- Medicaid ID
- 100223217 WI
- Medicare enrollment
- Enrolled (PECOS I20250829003969); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2022
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 14555 W National Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Trupti Akella, M.D.Gastroenterology Physician1215321690
- Courtney Amborn, DPTPhysical Therapist1629685110
- Sarah Arvelo, APNPNurse Practitioner1326594474
- Kristy Baars, DNP, MSWPsychiatric/Mental Health Nurse Practitioner1114809886
Verify Michelle Asuncion-Castor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 81459-21Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
49 Medicare Part D claims for 14 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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
- Aurora Advanced Healthcare, Inc.New Berlin, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michelle Asuncion-Castor among 3,765 family medicine physician records in Wisconsin
Michelle Asuncion-Castor, DO 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 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2022 · median 2007 among the 2,347 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 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 family medicine physician records list a practice address in New Berlin
They are 36 of the 662 NPPES records with a practice address in New Berlin, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in New Berlin → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Roger Beaumont, D.O.New Berlin, WI 531511649268061
- James Censky, MDNew Berlin, WI 531511467459248
- Nezih Hasanoglu, D.O.New Berlin, WI 531511730166901
- Kevin Izard, M.D.New Berlin, WI 531511508831926
- Renee Knapp, D.O.New Berlin, WI 531511043283815
- Gary Kuhl, D.O.New Berlin, WI 531511649243429
- Gregory Kuhr, MDNew Berlin, WI 531511720049844
- Margaret Leonhardt, M.D.New Berlin, WI 531511538153416
Common questions
What is Michelle Asuncion-Castor, DO's NPI number?
Michelle Asuncion-Castor, DO's National Provider Identifier (NPI) is 1952044075, issued on Apr 16, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Michelle Asuncion-Castor, DO located?
The NPPES record lists a practice address at 14555 W National Ave, New Berlin, WI, 53151. Phone: (262) 827-3636. Providers update this record themselves, so call before visiting.
How can I verify Michelle Asuncion-Castor, DO's license?
NPPES lists Wisconsin license number 81459-21, 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 Michelle Asuncion-Castor, DO prescribe under Medicare Part D?
In 2024, Michelle Asuncion-Castor, DO had 49 Medicare Part D claims for 14 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.