Doctor profile · Federal record

Dr. Timothy Gardner, MD

Gastroenterology Physician (CMS: Internal Medicine) · Internal Medicine Physician · Gastroenterology Physician · Gastroenterology Physician · Lebanon, NH

  • NPI 1851387229
  • Accepts Medicare
  • 26 yrs in practice
  • Licensed in 4 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1 Medical Center Dr
Lebanon, NH 037561000
(605) 650-5000
Additional location
1101 26Th St S
Great Falls, MT 594055161
(406) 731-8888
fax (406) 731-8318

Credentials & registration

NPPES · NUCC
NPI registered
September 2005 — 21 yrs on file
Profile last updated
March 19, 2024
Year of graduation
2000 — 26 yrs since
Specialty taxonomy
207RG0100X — NUCC code
State licenses (4)
New Hampshire #11794 · Vermont #042-0010476 · Minnesota #49986 · Montana #138343
Medicaid (3)
NH #3077317 · MN #352155000 · VT #1009382

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1851387229. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
523
Distinct HCPCS
10
Medicare allowed
$68,211
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 71 51 $66
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 67 67 $76
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare 41 40 $233
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito 41 41 $5
99214 Established patient office or other outpatient visit, 30-39 minutes 40 33 $97
43259 Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 38 37 $207
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 28 27 $98
45380 Biopsy of large bowel using a flexible endoscope 28 28 $164
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 23 22 $251
99212 Established patient office or other outpatient visit, 10-19 minutes 22 14 $36

In context: peer comparison

Among 10 peers in Lebanon Gastroenterology Physician, average services per provider: 38. This provider delivers 14× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
568
Patients
77
Total drug cost
$971,871
Drug Type Claims Patients Total cost
Creon (Lipase/Protease/Amylase) Brand 191 30 $809,260
Omeprazole Generic 66 17 $1,422
Lactated Ringers (Ringer's Solution,Lactated) Brand 32 0 $1,059
Gabapentin Generic 31 0 $1,949
Hydromorphone Hcl Generic 31 0 $748
Ciprofloxacin Hcl Generic 30 15 $682
Oxycodone Hcl Generic 29 0 $935
Pantoprazole Sodium Generic 28 15 $974
Methadone Hcl Generic 21 0 $536
Xifaxan (Rifaximin) Brand 21 0 $27,963

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Timothy Gardner's medical specialty?
Dr. Timothy Gardner practices Gastroenterology Physician in Lebanon, NH.
Where does Dr. Timothy Gardner practice?
Dr. Timothy Gardner practices at 1 Medical Center Dr, Lebanon, NH 037561000. Office phone: 6056505000.
What is Dr. Timothy Gardner's NPI?
Dr. Timothy Gardner's National Provider Identifier (NPI) is 1851387229, issued by NPPES.
Does Dr. Timothy Gardner accept Medicare assignment?
Yes. Dr. Timothy Gardner accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Gardner commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.