Quick answers
- Does Joseph R. Guarnaccia accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph R. Guarnaccia 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 Joseph R. Guarnaccia see?
- In 2024, CMS data shows 356 Original Medicare patients and 456 services for Joseph R. Guarnaccia. This counts Original Medicare only and measures volume, not quality.
- What is Joseph R. Guarnaccia's NPI number?
- 1730123811. 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 Joseph R. Guarnaccia, 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 | 356 |
|---|---|
| Services billed to Medicare | 456 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)127 services
- Emergency department visit with high level of medical decision making (99285)105 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)70 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)61 services
- Emergency department visit with moderate level of medical decision making (99284)43 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 blood pressure70%
- High cholesterol68%
- Arthritis49%
- Anxiety42%
- Depression32%
- Diabetes29%
Hospitals where Joseph R. Guarnaccia works
Medicare's Facility Affiliation Data lists Joseph R. Guarnaccia 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.
- Concord HospitalConcord, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 300001
Practice locations
Addresses where Joseph R. Guarnaccia is enrolled with Medicare (CMS data updated October 2, 2026).
- 250 Pleasant StConcord, NH 03301 (603) 230‑3138
Group practices
Medicare enrollment lists Joseph R. Guarnaccia as a member of this group (CMS data updated October 2, 2026).
- Concord Hospital Inc567 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Concord
Clinicians with the same Medicare primary specialty in Concord, NH — not a recommendation.
Other clinicians in Concord Hospital Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of New England, College Of Osteo Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730123811 |
| 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