Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. Timothy L Sie, NP

Individual provider Family Nurse Practitioner · NPI 1366763450

Mr. Timothy L Sie, NP is a Nurse Practitioner in Milwaukee, Wisconsin. Qualified in 2009, 17 years ago. Practices with The Medical College of Wisconsin Inc, a 2,093-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
17
Licensed in
WI
In the registry since
2010
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

9200 W Wisconsin Ave Cardiothoracic Surgery
Milwaukee, WI 53226-3522
Phone: (414) 955-6900
Fax: (414) 955-6204
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 153069 (WI)

Record details

NPI number1366763450
Entity typeIndividual (Type 1)
GenderMale
Credentials NP
Sole proprietorNo
NPI enumeratedJune 13, 2010
Last updated in NPPESJune 17, 2021
Certification dateJune 17, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice The Medical College Of Wisconsin Inc — 2093 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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