DR. TIMOTHY W WESTLAKE (M.D.) – Emergency Medicine Physician, NPI 1184600447
Emergency Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,309 EMERGENCY MEDICINE in WI
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Provider Addresses for DR. TIMOTHY W WESTLAKE (M.D.)
6400, Industrial Loop, Village Industrial District, Greendale, Milwaukee County, Wisconsin, 53129, United States
GREENDALE, WI 531292452
Phone: (414) 423-4100
Fax: (414) 423-4134
Type: Mailing
Summit Avenue, Oconomowoc, Waukesha County, Wisconsin, 53066, United States
OCONOMOWOC, WI 530663844
Phone: (262) 569-0251
Fax: (262) 569-0342
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: 2010-09-21
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 |
|---|---|---|---|---|
| I20100921000299 | I | Emergency Medicine | 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 |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 248 | 227 | $0 |
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 186 | 160 | $0 |
| 99291 | Critical care, first 30-74 minutes | 173 | 157 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 109 | 105 | $0 |
| 99292 | Critical care, each additional 30 minutes | 45 | 43 | $0 |
Insurance plans in this area (ZIP 53129)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| EMERGENCY MEDICINE | WI | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 209 | 157 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI | |
| Emergency Medicine | WI |
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