Quick answers
- Does John M. Keggi accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Keggi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does John M. Keggi see?
- In 2024, CMS data shows 579 Original Medicare patients and 4,293 services for John M. Keggi. This counts Original Medicare only and measures volume, not quality.
- What is John M. Keggi's NPI number?
- 1952366072. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for John M. Keggi, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 579 |
|---|---|
| Services billed to Medicare | 4,293 |
| Different services or procedures | 48 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,236 services
- Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg (J7325)960 services
- Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)312 services
- X-ray of knee, 3 views (73562)251 services
- X-ray of hip, 2-3 views (73502)171 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Arthritis75%
- High blood pressure74%
- Ischemic heart disease25%
- Anxiety25%
- Diabetes20%
Hospitals where John M. Keggi works
Medicare's Facility Affiliation Data lists John M. Keggi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Charlotte Hungerford HospitalTorrington, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070011
- Danbury HospitalDanbury, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070033
- Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025
- Midstate Medical CenterMeriden, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070017
- Sharon HospitalSharon, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070004
Practice locations
Addresses where John M. Keggi is enrolled with Medicare (CMS data updated October 2, 2026).
- 1579 Straits Tpke EMiddlebury, CT 06762 (203) 598‑0700
Group practices
Medicare enrollment lists John M. Keggi as a member of this group (CMS data updated October 2, 2026).
- Orthopaedics New England, PC9 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Middlebury
Clinicians with the same Medicare primary specialty in Middlebury, CT — not a recommendation.
Other clinicians in Orthopaedics New England, PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952366072 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians