Doctor profile · Federal record

Dr. Irving Smith, DO

Sleep Medicine (Internal Medicine) Physician (CMS: Internal Medicine) · Internal Medicine Physician · Littleton, NH

  • NPI 1023206968
  • Accepts Medicare
  • 22 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
580 St Johnsbury Road
Littleton, NH 03561
(860) 364-7029
fax (860) 364-7079
Mailing address
600 St Johnsbury Road
Littleton, NH 03561

Credentials & registration

NPPES · NUCC
NPI registered
October 2007 — 19 yrs on file
Profile last updated
August 24, 2015
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
207RS0012X — NUCC code
State license (1)
Connecticut #048601

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023206968. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$102
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Zoll Respicardia, INC. 1 $101.88

By nature of payment

Food and Beverage
$102

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
46
Patients
0
Total drug cost
$15,625
Drug Type Claims Patients Total cost
Sunosi (Solriamfetol Hcl) Brand 16 0 $14,906
Fluticasone Propionate Generic 15 0 $195
Zolpidem Tartrate Generic 15 0 $524

Frequently asked questions

Auto-generated from federal data
What is Dr. Irving Smith's medical specialty?
Dr. Irving Smith practices Sleep Medicine (Internal Medicine) Physician in Littleton, NH.
Where does Dr. Irving Smith practice?
Dr. Irving Smith practices at 580 St Johnsbury Road, Littleton, NH 03561. Office phone: 8603647029.
What is Dr. Irving Smith's NPI?
Dr. Irving Smith's National Provider Identifier (NPI) is 1023206968, issued by NPPES.
Does Dr. Irving Smith accept Medicare assignment?
Yes. Dr. Irving Smith accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.