PETER A MASSART – Hospitalist Physician, NPI 1598828790
Hospitalist Physician
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
2,941 INTERNAL MEDICINE in WI
Provider Addresses for PETER A MASSART
4349 Raymir Pl
Wauwatosa, WI 532221141
Phone: (414) 708-5096
Type: Location
PO BOX 735044
CHICAGO, IL 606735044
Phone: (800) 326-2250
Type: Mailing
252 MCHENRY ST
BURLINGTON, WI 531051828
Phone: (414) 649-6000
Type: Location
4349, Raymir Place, Lovers Lane Estates, Wauwatosa, Milwaukee County, Wisconsin, 53222, United States
WAUWATOSA, WI 532221141
Phone:
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: 2008-06-13
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 |
|---|---|---|---|---|
| I20080613000256 | I | Internal 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 201 | 92 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 132 | 128 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 124 | 72 | $0 |
| 99238 | Hospital discharge day management, 30 minutes or less | 85 | 78 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 33 | 33 | $0 |
Insurance plans in this area (ZIP 53222)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | WI | |
| Family Practice | WI | |
| Family Practice | IL | |
| Geriatric Medicine, Internal Medicine | WI | |
| - | WI | |
| - | WI | |
| - | IL | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| Family Practice | WI | |
| - | OH |
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