Doctor profile · Federal record

Dr. Brian Monahan, MD

Colon & Rectal Surgery Physician (CMS: Colorectal Surgery (Proctology)) · Surgery Physician · Surgery Physician · Norwalk, CT

  • NPI 1326606690
  • Accepts Medicare
  • 7 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
34 Maple St
Norwalk, CT 06850
(203) 852-2000

Credentials & registration

NPPES · NUCC
NPI registered
June 2019 — 7 yrs on file
Profile last updated
August 27, 2025
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
208C00000X — NUCC code
State licenses (2)
Connecticut #80590 · Pennsylvania #MT217949

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1326606690. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$39
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Intuitive Surgical, INC. 1 $39.13

By nature of payment

Food and Beverage
$39

Frequently asked questions

Auto-generated from federal data
What is Dr. Brian Monahan's medical specialty?
Dr. Brian Monahan practices Colon & Rectal Surgery Physician in Norwalk, CT.
Where does Dr. Brian Monahan practice?
Dr. Brian Monahan practices at 34 Maple St, Norwalk, CT 06850. Office phone: 2038522000.
What is Dr. Brian Monahan's NPI?
Dr. Brian Monahan's National Provider Identifier (NPI) is 1326606690, issued by NPPES.
Does Dr. Brian Monahan accept Medicare assignment?
Yes. Dr. Brian Monahan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.