Kathleen Mary Powell Mattioli, MD
Obstetrics & Gynecology Physician · West Allis, WI
Kathleen Mary Powell Mattioli, MD is an obstetrics & gynecology physician with a practice address in West Allis, Wisconsin, and NPI 1457530446, issued on Oct 26, 2007. Check the license (Wisconsin 49339, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Kathleen Mary Powell Mattioli
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 49339 WI
036-163299 IL
Self-reported in NPPES; status is on the state search - Practice location
- 8905 W Lincoln Ave, West Allis, WI 53227
- Phone
- (414) 978-2229
- Enumerated
- Oct 26, 2007
- Record last updated
- Jun 7, 2023
- Fax
- (414) 978-2279
- Medicaid ID
- 35336200 WI
- Medicare enrollment
- Enrolled (PECOS I20080926000378); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 796 in Wisconsin → Look up another NPI →
Also registered at 8905 W Lincoln Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Douglas Carlson, MDObstetrics & Gynecology Physician1336294438
- Jamie Chao, MDUrogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1811156185
- Jennifer Comp, RNAmbulatory Women's Health Care Registered Nurse1538251038
- Cathleen Conway Johnson, CNMAdvanced Practice Midwife1982877247
- Susan Darmstadter, M.D.Pulmonary Disease Physician1134191661
Verify Kathleen Mary Powell Mattioli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49339Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
70 Medicare Part D claims for 32 beneficiaries, against an average of 165 among the 28,733 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.West Allis, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Mary Powell Mattioli among 796 obstetrics & gynecology physician records in Wisconsin
Kathleen Mary Powell Mattioli, MD is one of 796 obstetrics & gynecology physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 53% of them.
- NPI issued2007 · 53% of these records are older, 40% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2004 · median 2007 among the 478 with a school on file
- Record last updated2023 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 obstetrics & gynecology physician records list a practice address in West Allis
They are 32 of the 1,362 NPPES records with a practice address in West Allis, and 796 obstetrics & gynecology physician records in Wisconsin.
All 796 in Wisconsin → Every provider in West Allis → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Mary Burke, M.D.Milwaukee, WI 532271508848250
- Scott Caldwell, MDWest Allis, WI 532271477511905
- Karen Dobbs, M.D.West Allis, WI 532271023198074
- James Dolan, MDWest Allis, WI 532271639270796
- Amarjit Jaglan, M.D.West Allis, WI 532271154401248
- Barbara Lamping, M.D.West Allis, WI 532271780659490
- Michael Lasser, MDWest Allis, WI 532271598716342
- Lisa LloydWest Allis, WI 532271134209174
Common questions
What is Kathleen Mary Powell Mattioli, MD's NPI number?
Kathleen Mary Powell Mattioli, MD's National Provider Identifier (NPI) is 1457530446, issued on Oct 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Mary Powell Mattioli, MD located?
The NPPES record lists a practice address at 8905 W Lincoln Ave, West Allis, WI, 53227. Phone: (414) 978-2229. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Mary Powell Mattioli, MD's license?
NPPES lists Wisconsin license number 49339, 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 Kathleen Mary Powell Mattioli, MD prescribe under Medicare Part D?
In 2024, Kathleen Mary Powell Mattioli, MD had 70 Medicare Part D claims for 32 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.