JOHN KEEGAN – Infectious Disease Physician, NPI 1053842385
Infectious Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
184 INFECTIOUS DISEASE in WI
Provider Addresses for JOHN KEEGAN
820 N Plankinton Ave # 20
Milwaukee, WI 532031802
Phone: (608) 252-6540
Type: Location
8701, West Watertown Plank Road, Wauwatosa, Milwaukee County, Wisconsin, 53226, United States
MILWAUKEE, WI 532263548
Phone:
Type: Mailing
9200 W WISCONSIN AVE
MILWAUKEE, WI 532263522
Phone: (414) 805-6444
Fax: (414) 805-6702
Type: Mailing
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: 2022-05-11
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
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20220511002147 | I | Infectious Disease | WI | TBD |
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.
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
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 28 | 21 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 25 | 20 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 18 | 16 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 13 | 13 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 53203)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | WI | |
| Clinical Social Worker | CO | |
| - | WI | |
| Nurse Practitioner | MO | |
| Infectious Disease, Internal Medicine | WI | |
| Infectious Disease | TX | |
| P S Y C H I A T R Y | OH | |
| Clinical Social Worker | MO | |
| Nurse Practitioner | MO | |
| Clinical Social Worker | MO |
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