DR. PETER JOHN DRENNAN (D.O.) – Internal Medicine Physician, NPI 1629043625
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,448 INTERNAL MEDICINE in CT
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Provider Addresses for DR. PETER JOHN DRENNAN (D.O.)
2150, Main Street, Metro Center, North End, Springfield, Hampden County, Massachusetts, 01107, United States
SPRINGFIELD, MA 01104
Phone: (413) 739-5676
Fax: (413) 733-5860
Type: Mailing
Enfield Street, Thompsonville, Enfield, Hartford County, Connecticut, 06082, United States
ENFIELD, CT 06082
Phone: (860) 741-6058
Fax: (860) 253-9326
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 25 Open Payments records for all available years, with a total value of $458.
Total Amount is formed as General ($458) + Research ($0) + Ownership ($0) = $458.
Last reported payment date: 2023-12-08 • Largest payer in this snapshot: PFIZER INC. ($113).
Total Amount
$458
General + Research + Ownership
Payments
25
Total payment records
General Amount
$458
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-12-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $113 |
| Lilly USA, LLC | $61 |
| Abbott Laboratories | $43 |
| Corium, LLC | $42 |
| Exact Sciences Corporation | $40 |
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: 2020-01-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20040927001034 | I | Internal Medicine | MA | TBD |
| I20200129002591 | I | Internal Medicine | CT | 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 | 383 | 192 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 299 | 168 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 149 | 149 | $0 |
| 93793 | Anticoagulant management of patient taking warfarin | 108 | 12 | $0 |
| 99442 | Telephone medical discussion with physician, 11-20 minutes | 79 | 59 | $0 |
Insurance plans in this area (ZIP 01104)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| Physician Assistant | MA | |
| Physician Assistant | MA | |
| - | MA | |
| - | MA | |
| Internal Medicine | MA | |
| - | MA | |
| Internal Medicine | MA | |
| Internal Medicine | MA | |
| - | MA |
Reviews
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