DR. JOHN T LAROSSA (M.D.) – Specialist, NPI 1346217155
Specialist
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
549 ENDOCRINOLOGY in MA
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Provider Addresses for DR. JOHN T LAROSSA (M.D.)
Visitor Parking, 2000, Washington Street, Newton Lower Falls, Newton, Middlesex County, Massachusetts, 02462, United States
SUITE 100
NEWTON, MA 024621650
Phone: (617) 244-1311
Fax: (617) 244-2819
Mailing address matches the actual address.
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: 2005-10-29
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20051029000058 | I | Endocrinology | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 601 | 325 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 595 | 339 | $0 |
| 99443 | Telephone medical discussion with physician, 21-30 minutes | 120 | 95 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 45 | 45 | $0 |
Insurance plans in this area (ZIP 02462)
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