WILLIAM C KWASNY (MD) – Anesthesiology Physician, NPI 1962452532

WILLIAM C KWASNY (MD) is a healthcare provider. based in Oshkosh, Wisconsin. specializing in ANESTHESIOLOGY. They hold the professional credentials MD. They hold a License No. 47809 (WI). The NPI Number for WILLIAM C KWASNY (MD) is 1962452532

Main info

Male
27 Years Of Experience
Accepts Medicare Assignment
Name
WILLIAM C KWASNY (MD)
NPI
1962452532
Phone
Not provided
Address
3420 JACKSON ST
Enumeration Date
12 May 2006
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
MEDICAL COLLEGE OF WISCONSIN
Secondary Phone
9207314101
Graduation Year
1999 (27 years ago)
PAC ID
2163310020
Group Practice PAC ID
3476539875
Professional Enrollment ID
I20050614000424
Address ID
WI549113454AP1818XSTXX400
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

1,266 ANESTHESIOLOGY in WI

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Provider Addresses for WILLIAM C KWASNY (MD)

  • Jackson Street, Oshkosh, Winnebago County, Wisconsin, 54901, United States

    SUITE E

    OSHKOSH, WI 549018144

    Phone:

    Type: Mailing

  • Ascension Saint Elizabeth Hospital, 1506, South Oneida Street, Appleton, Outagamie County, Wisconsin, 54915, United States

    APPLETON, WI 549151305

    Phone: (920) 738-2000

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2005-06-14

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20050614000424IAnesthesiologyWITBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 54901)

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Provider's Procedures

WILLIAM C KWASNY (MD) performs procedures in ANESTHESIOLOGY. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
ANESTHESIOLOGYWI36620Insertion of arterial catheter for blood sampling or infusion, accessed through the skin2120

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 3476539875View full group profile
NameSpecialtyState
Certified Registered Nurse Anesthetist (Crna)WI
A N E S T H E S I O L O G YWI
-WI
Certified Registered Nurse Anesthetist (Crna)WI
Certified Registered Nurse Anesthetist (Crna)WI
-WI
-GA
Certified Registered Nurse Anesthetist (Crna)WI
Certified Registered Nurse Anesthetist (Crna)WI
-ND

Reviews

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Frequently asked questions

Is WILLIAM C KWASNY (MD) listed with a National Provider Identifier?
Yes — WILLIAM C KWASNY (MD) has NPI 1962452532 on file in the registry.
Active or inactive — what applies to WILLIAM C KWASNY (MD)?
You should see WILLIAM C KWASNY (MD) as active in CMS-hosted NPPES data.
What area of care is associated with WILLIAM C KWASNY (MD)?
WILLIAM C KWASNY (MD)'s record emphasizes Anesthesiology Physician. Clinical services aligned with this taxonomy classification.
Where in Wisconsin is WILLIAM C KWASNY (MD) registered?
Use Oshkosh, Wisconsin as the headline location for WILLIAM C KWASNY (MD) here.
Does inactive status remove historical data?
Historical rows can remain visible after status changes — read the dates carefully.

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