LEO MAXWELL CASS (M.D.) – Specialist, NPI 1033158795
Specialist
Main info
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for LEO MAXWELL CASS (M.D.)
184 Swanton St
Winchester, MA 018901921
Phone: (781) 721-5025
Fax: (781) 729-2297
Type: Location
Woburn Post Office, 1, Abbott Street, Woburn Highlands, Woburn, Middlesex County, Massachusetts, 01801, United States
WOBURN, MA 018881306
Phone: (781) 721-5025
Fax: (781) 729-2297
Type: Mailing
223, Swanton Street, Winchester, Middlesex County, Massachusetts, 01890, United States
WINCHESTER, MA 018901968
Phone: (781) 721-5025
Fax: (781) 729-2297
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: 2005-08-26
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 |
|---|---|---|---|---|
| I20050826000381 | I | Internal Medicine | MA | 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 |
|---|---|---|---|---|
| 99307 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes | 116 | 14 | $0 |
Insurance plans in this area (ZIP 01890)
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