DR. JAMES DONALD GRENON (D.C.) – Chiropractor, NPI 1659453249
Chiropractor
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
444 CHIROPRACTIC in CT
Provider Addresses for DR. JAMES DONALD GRENON (D.C.)
420 S MAIN ST LOWR LEVEL
CHESHIRE, CT 064103145
Phone: (203) 272-4513
Fax: (203) 699-8253
Type: Location
677, Main Street, North Swanzey, Keene, Cheshire County, New Hampshire, 03431, United States
SUITE 1B
CHESHIRE, CT 064103158
Phone: (203) 272-4513
Fax: (203) 699-8253
Type: Mailing
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: 2012-02-01
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 |
|---|---|---|---|---|
| I20120201000842 | I | Chiropractic | 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 |
|---|---|---|---|---|
| 98940 | Chiropractic manipulative treatment, 1-2 spinal regions | 587 | 34 | $0 |
Insurance plans in this area (ZIP 06410)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| C H I R O P R A C T I C | CT |
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