Joseph Leahy, D.O.
NPI 1770671604 · Emergency Medicine Physician · Nashua, NH
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Leahy, D.O. is a Emergency Medicine Physician provider in Nashua, NH (NPI 1770671604).
Provider details
- NPI number
- 1770671604
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 10161 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$42 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joseph Leahy's NPI number?
- Joseph Leahy's National Provider Identifier (NPI) is 1770671604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Leahy's specialty?
- Joseph Leahy is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Leahy located?
- Joseph Leahy's practice location on file with NPPES is 8 Prospect St, Nashua, NH 03060-3925.
- What is Joseph Leahy's phone number?
- The practice phone number listed in the NPPES registry for Joseph Leahy is (603) 577-2500.
- Does Joseph Leahy accept Medicare?
- Joseph Leahy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Leahy's NPI active?
- Yes — Joseph Leahy's NPI (1770671604) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.