John M. O'Day
NPI 1518051382 · Otolaryngology Physician · Somersworth, NH
John M. O'Day is a Otolaryngology Physician organization in Somersworth, NH (NPI 1518051382).
Provider details
- NPI number
- 1518051382
- Entity type
- Organization
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Joyce O'Day, Administrator(603) 692-4500
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Facial Plastic Surgery Physician207YS0123X
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Head and Neck Specialty Group of Nh
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2009-03-18
Frequently asked questions
- What is John M. O'Day's NPI number?
- John M. O'Day's National Provider Identifier (NPI) is 1518051382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John M. O'Day?
- John M. O'Day is classified in the NPPES registry as Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is John M. O'Day located?
- John M. O'Day's practice location on file with NPPES is 361 High St, Somersworth, NH 03878-1407.
- What is John M. O'Day's phone number?
- The practice phone number listed in the NPPES registry for John M. O'Day is (603) 692-4500.
- Who is the authorized official for John M. O'Day?
- The authorized official listed on John M. O'Day's NPPES record is Joyce O'Day, Administrator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John M. O'Day's NPI active?
- Yes — John M. O'Day's NPI (1518051382) is active in the NPPES registry as of the last update on 2009-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.