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

Dr. Alexander Spencer Tretinyak, MD

Individual provider Vascular Surgery Physician · NPI 1073566030

Dr. Alexander Spencer Tretinyak, MD is a General Surgery in Appleton, Wisconsin. Graduated from University of Minnesota Medical School in 1996, 30 years ago. Practices with Fox Valley Surgical Associates Ltd, a 35-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
30
Trained at
University of Minnesota Medical School
Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1818 N Meade St Ste 240 West
Appleton, WI 54911-3454
Phone: (920) 731-8131
Fax: (920) 832-0444
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Vascular Surgery Physician (primary) Taxonomy 2086S0129X · Licence 60546-20 (WI)

Record details

NPI number1073566030
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 18, 2006
Last updated in NPPESJuly 16, 2013

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Also practisesVASCULAR SURGERY
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1996 (30 years in practice)
Group practice Fox Valley Surgical Associates Ltd — 35 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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