MICHAEL J O'NEILL (M.D.) – Psychiatry Physician, NPI 1083655245

MICHAEL J O'NEILL (M.D.) is a healthcare provider. based in Keshena, Wisconsin. specializing in PSYCHIATRY. They hold the professional credentials M.D.. They hold a License No. 18117-020 (WI). The NPI Number for MICHAEL J O'NEILL (M.D.) is 1083655245

Main info

Male
57 Years Of Experience
Accepts Medicare Assignment
Name
MICHAEL J O'NEILL (M.D.)
NPI
1083655245
Phone
(715) 799-3361
Address
PO BOX 970
Enumeration Date
9 June 2006
Last Update Date
7 March 2023

Doctor Profile

Medical School Name
UNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Secondary Phone
-
Graduation Year
1969 (57 years ago)
PAC ID
2769430297
Group Practice PAC ID
2668459264
Professional Enrollment ID
I20050111000490
Address ID
WI541350970KEW3275BOXX701
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

677 PSYCHIATRY in WI

Provider Addresses for MICHAEL J O'NEILL (M.D.)

  • PO BOX 970

    KESHENA, WI 541350970

    Phone: (715) 799-3361

    Fax: (715) 799-3099

    Type: Mailing

  • W3275 WOLF RIVER ROAD

    KESHENA, WI 54135

    Phone: (715) 799-3361

    Fax: (715) 799-3099

    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: 2005-01-11

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
I20050111000490IPsychiatryWITBD

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.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99223Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes1818$0
View full utilization report →

Insurance plans in this area (ZIP 54135)

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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: 2668459264View full group profile
NameSpecialtyState
Clinical Social WorkerWI
Family PracticeWI
-WI
Family PracticeWI
Family PracticeWI
Nurse PractitionerWI
Family Practice, Osteopathic Manipulative MedicineWI
O P T O M E T R YWI
Family PracticeWI
P O D I A T R YWI

Reviews

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Frequently asked questions

What is MICHAEL J O'NEILL (M.D.)'s NPI number?
MICHAEL J O'NEILL (M.D.)'s NPI is 1083655245 — the number used across U.S. healthcare to identify this provider.
Would MICHAEL J O'NEILL (M.D.) appear as active to a payer?
You can treat MICHAEL J O'NEILL (M.D.) as active for directory purposes; confirm clinical privileges separately.
What clinical focus is listed for MICHAEL J O'NEILL (M.D.)?
At a glance, MICHAEL J O'NEILL (M.D.) is tied to Psychiatry Physician. Clinical services aligned with this taxonomy classification.
What locale is associated with MICHAEL J O'NEILL (M.D.)?
Directory geography for MICHAEL J O'NEILL (M.D.) centers on Keshena, Wisconsin.
Can I trust this NPI listing for MICHAEL J O'NEILL (M.D.)?
The listing is sourced from the national NPI registry. If something looks off, compare with NPPES and the clinic's website.

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