THOMAS J ZANCA (MD) – Emergency Medicine Physician, NPI 1396726592
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,682 EMERGENCY MEDICINE in MA
Provider Addresses for THOMAS J ZANCA (MD)
460, Totten Pond Road, Prospectville, Piety Corner, Waltham, Middlesex County, Massachusetts, 02451, United States
C O MSI
WALTHAM, MA 024511906
Phone: (781) 890-9933
Fax: (781) 890-9950
Type: Mailing
88 WASHINGTON STRRET
ATTN EMERGENCY DEPT
TANNTON, MA 02780
Phone: (508) 828-7108
Fax: (508) 828-7158
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: 2005-04-01
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 |
|---|---|---|---|---|
| I20050401000423 | I | Emergency 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 |
|---|---|---|---|---|
| 99285 | Emergency department visit with high level of medical decision making | 364 | 344 | $0 |
| 99284 | Emergency department visit with moderate level of medical decision making | 138 | 134 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 31 | 30 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 13 | 13 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 02451)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | HI | |
| Emergency Medicine | NY | |
| P S Y C H I A T R Y | MA | |
| Cardiovascular Disease (Cardiology) | MA | |
| Internal Medicine | MA | |
| Occupational Therapist In Private Practice | MA | |
| P S Y C H I A T R Y | MA | |
| A N E S T H E S I O L O G Y | MA | |
| Certified Registered Nurse Anesthetist (Crna) | MA | |
| Internal Medicine | MA |
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