John M. O'Day, M.D.
Otolaryngology Physician · Somersworth, NH
John M. O'Day, M.D. is an otolaryngology physician with a practice address in Somersworth, New Hampshire, and NPI 1508880964, issued on Jul 27, 2006. Check the license (New Hampshire 5507, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John M. O'Day
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 5507 NH
Self-reported in NPPES; status is on the state search - Practice location
- 361 High St, Somersworth, NH 03878
- Phone
- (603) 692-4500
- Enumerated
- Jul 27, 2006
- Record last updated
- May 8, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (603) 692-4520
- Medicaid ID
- 80004416 NH
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 54 in New Hampshire → Look up another NPI →
Also registered at 361 High St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Caroline Freeman, AU.DAudiologist1437662350
- Steven Johnson, MDOtolaryngology Physician1366402737
- Steven Jordan, APRNFamily Nurse Practitioner1861094773
- William LongHearing Instrument Specialist1124119532
- Jodie-Marie Voishnis, PA-CSurgical Physician Assistant1649421579
- Kevin Weller, APRNFamily Nurse Practitioner1497293526
Verify John M. O'Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 5507Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average otolaryngology physician in 2024
28 Medicare Part D claims, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John M. O'Day among 54 otolaryngology physician records in New Hampshire
John M. O'Day, M.D. is one of 54 otolaryngology physician records with a practice address in New Hampshire. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 24% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2008 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in New Hampshire
There are 54 otolaryngology physician records in New Hampshire.
All 54 in New Hampshire → Every provider in Somersworth → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Steven Johnson, MDSomersworth, NH 038781366402737
- Eric Anderson, MDExeter, NH 038331851328843
- Peter Ihm, MDExeter, NH 038331285691030
- Brandon Peck, MDExeter, NH 038331295098994
- Peter Seymour, MDDover, NH 038201417167826
- Michael Toscano, DODover, NH 038201083239529
- Joseph White, D.M.D., M.D.Dover, NH 038201780749226
- Taraneh Azar, MDPortsmouth, NH 038011043289739
Common questions
What is John M. O'Day, M.D.'s NPI number?
John M. O'Day, M.D.'s National Provider Identifier (NPI) is 1508880964, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John M. O'Day, M.D. located?
The NPPES record lists a practice address at 361 High St, Somersworth, NH, 03878. Phone: (603) 692-4500. Providers update this record themselves, so call before visiting.
How can I verify John M. O'Day, M.D.'s license?
NPPES lists New Hampshire license number 5507, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John M. O'Day, M.D. prescribe under Medicare Part D?
In 2024, John M. O'Day, M.D. had 28 Medicare Part D claims; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.