Doctor profile · Federal record

Dr. Dennis O'Brien, MD

Internal Medicine Physician · Ticonderoga, NY

  • NPI 1952449829
  • 19 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
102 Race Track RD Ste 1
Ticonderoga, NY 128834004
(518) 585-6708
fax (518) 585-3260
Mailing address
9 Carey RD
Queensbury, NY 128047880

Credentials & registration

NPPES · NUCC
NPI registered
February 2007 — 19 yrs on file
Profile last updated
November 9, 2018
Specialty taxonomy
207R00000X — NUCC code
State license (1)
New York #154766
Medicaid
NY #00774992

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1952449829. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$89
Transactions
5
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
Lilly USA, LLC 1 $22.60
AstraZeneca Pharmaceuticals Lp 1 $18.55
Sanofi Pasteur INC. 1 $17.25
Exact Sciences Corporation 1 $17.00
Pfizer INC. 1 $14.03

By nature of payment

Food and Beverage
$89

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
174
Patients
45
Total drug cost
$2,486
Drug Type Claims Patients Total cost
Amlodipine Besylate Generic 42 21 $264
Losartan Potassium Generic 31 12 $365
Atorvastatin Calcium Generic 24 12 $174
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 21 0 $901
Simvastatin Generic 12 0 $92
Lisinopril Generic 11 0 $111
Montelukast Sodium Generic 11 0 $191
Ramipril Generic 11 0 $158
Rosuvastatin Calcium Generic 11 0 $231

Frequently asked questions

Auto-generated from federal data
What is Dr. Dennis O'Brien's medical specialty?
Dr. Dennis O'Brien practices Internal Medicine Physician in Ticonderoga, NY.
Where does Dr. Dennis O'Brien practice?
Dr. Dennis O'Brien practices at 102 Race Track RD Ste 1, Ticonderoga, NY 128834004. Office phone: 5185856708.
What is Dr. Dennis O'Brien's NPI?
Dr. Dennis O'Brien's National Provider Identifier (NPI) is 1952449829, issued by NPPES.