DR. STEPHEN J. BONASERA (MD) – Geriatric Medicine (Internal Medicine) Physician, NPI 1780632729
Geriatric Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
223 GERIATRIC MEDICINE in MA
Provider Addresses for DR. STEPHEN J. BONASERA (MD)
759 Chestnut Street
Springfield, MA 011071619
Phone: (413) 794-3147
Fax: (413) 794-4054
Type: Location
21 DWIGHT RD STE 204
LONGMEADOW, MA 011061765
Phone: (413) 795-0268
Fax: (413) 795-8502
Type: Location
Nebraska Medical Center, 668, South 41st Street, Omaha, Douglas County, Nebraska, 68105, United States
OMAHA, NE 681988102
Phone: (402) 559-9600
Fax: (402) 559-8228
Type: Mailing
280 CHESTNUT STREET
2ND FL
SPRINGFIELD, MA 011991001
Phone: (413) 794-5700
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $85.
Total Amount is formed as General ($85) + Research ($0) + Ownership ($0) = $85.
Last reported payment date: 2024-03-26 • Largest payer in this snapshot: Eisai Inc. ($85).
Total Amount
$85
General + Research + Ownership
Payments
1
Total payment records
General Amount
$85
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Eisai Inc. | $85 |
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: 2022-01-19
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 |
|---|---|---|---|---|
| I20220119002845 | I | Geriatric 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 |
|---|---|---|---|---|
| G2212 | Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 367 | 53 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 55 | 55 | $0 |
| 99443 | Telephone medical discussion with physician, 21-30 minutes | 41 | 36 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 23 | 20 | $0 |
Insurance plans in this area (ZIP 01107)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | MA | |
| Anesthesiology, Pain Management | MA | |
| Physician Assistant | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| Physician Assistant | MA | |
| Physician Assistant | MA |
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