Catherine R. Valentyn, P.A. - C.
Physician Assistant · Milwaukee, WI
Catherine R. Valentyn, P.A. - C. is a physician assistant with a practice address in Milwaukee, Wisconsin, and NPI 1578558045, issued on Sep 12, 2005. Check the license (Wisconsin 1750-023, as entered in NPPES) with the Wisconsin board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Catherine R. Valentyn
- Credential
- P.A. - C.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 1750-023 WI
Self-reported in NPPES; status is on the state search - Practice location
- 633 E Mason St, Milwaukee, WI 53202
- Phone
- (414) 665-8400
- Enumerated
- Sep 12, 2005
- Record last updated
- Apr 10, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (414) 665-5730
- Medicaid ID
- 41989700 WI
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 633 E Mason St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Catherine R. Valentyn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1750-023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Catherine R. Valentyn among 3,475 physician assistant records in Wisconsin
Catherine R. Valentyn, P.A. - C. is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 96% newer
- In a Medicare fileNo · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2017 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
821 physician assistant records list a practice address in Milwaukee
They are 821 of the 18,389 NPPES records with a practice address in Milwaukee, and 3,475 physician assistant records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,475 in Wisconsin → Every provider in Milwaukee → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Charles Cline, PA-CMilwaukee, WI 532021497782247
- Wendy Davis, PA-CMilwaukee, WI 532021558391904
- Alan Edwards, PAMilwaukee, WI 532021700879871
- Carol Finucan, PA-CMilwaukee, WI 532021841220076
- Donald Gibson, PA-CMilwaukee, WI 532021366486425
- Kalyn Hafemann, PA-CMilwaukee, WI 532021881661577
- Katherine Hasselbrink, PA-CMilwaukee, WI 532021992735385
- Eugenie Oconnor, PAMilwaukee, WI 532021801859061
Common questions
What is Catherine R. Valentyn, P.A. - C.'s NPI number?
Catherine R. Valentyn, P.A. - C.'s National Provider Identifier (NPI) is 1578558045, issued on Sep 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Catherine R. Valentyn, P.A. - C. located?
The NPPES record lists a practice address at 633 E Mason St, Milwaukee, WI, 53202. Phone: (414) 665-8400. Providers update this record themselves, so call before visiting.
How can I verify Catherine R. Valentyn, P.A. - C.'s license?
NPPES lists Wisconsin license number 1750-023, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity 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. 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.