Quick answers
- Which hospitals does Irving Smith work at?
- Medicare's official clinician data lists Irving Smith at 2 hospitals: Littleton Regional Healthcare and Weeks Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Irving Smith see patients?
- Medicare's clinician data lists 3 practice locations, including Lancaster, NH, Littleton, NH and Whitefield, NH. Call before your visit to confirm the address.
- What is Irving Smith's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Sleep Medicine.
- Does Irving Smith accept Medicare assignment?
- Yes. Medicare's clinician data says Irving Smith accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Irving Smith?
- (603) 788-4911, as listed in official Medicare / NPI Registry data.
- What is Irving Smith's NPI number?
- 1023206968. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Irving Smith works
Medicare's Facility Affiliation Data lists Irving Smith at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Littleton Regional HealthcareLittleton, NH · Critical Access Hospital · CCN 301302
- Weeks Medical CenterLancaster, NH · Critical Access Hospital · CCN 301303
Practice locations
Addresses where Irving Smith is enrolled with Medicare (CMS data updated 2026-10-02).
- 173 Middle StLancaster, NH 03584 (603) 788‑4911
- 536 Cottage StLittleton, NH 03561 (603) 444‑3080
- 8 Clover LnWhitefield, NH 03598 (603) 837‑9005
Group practices
Medicare enrollment lists Irving Smith as a member of this group (CMS data updated 2026-10-02).
- Weeks Medical Center75 clinicians in the group
Specialties
- Internal Medicineprimary
- Sleep Medicinealso
Other internal medicine doctors in New Hampshire
Clinicians with the same Medicare primary specialty in New Hampshire — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Nova Southeastern College Of Osteo Medicine |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023206968 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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