Doctor profile · Federal record

Dr. MARIE LOUIES LAMSEN, M.D.

Internal Medicine Physician (CMS: INTERNAL MEDICINE) · Internal Medicine Physician · Student in an Organized Health Care Education/Training Program · DANBURY, CT

  • NPI 1982975710
  • Accepts Medicare
  • MIPS 100.0 / 100 · 2023
  • 17 yrs in practice
  • Licensed in 2 states
  • Female
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
24 HOSPITAL AVE
DANBURY, CT 068106077
(203) 739-6959
Additional location
16 Guion Pl
New Rochelle, NY 108015502
(914) 365-3680

Credentials & registration

NPPES · NUCC
NPI registered
January 2012 — 14 yrs on file
Profile last updated
January 31, 2022
Year of graduation
2009 — 17 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Connecticut #70095 · New York #274350

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1982975710. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,091
Distinct HCPCS
7
Medicare allowed
$118,491
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 352 214 $83
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 285 196 $124
99238 Hospital discharge day management, 30 minutes or less 167 163 $84
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 129 126 $180
99239 Hospital discharge day management, more than 30 minutes 96 95 $119
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 35 21 $52
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 27 27 $135

In context: peer comparison

Among 35 peers in this city , average services per provider: 136. This provider delivers 8.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$302
Transactions
8
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
Abbott Laboratories 1 $150.00
PFIZER INC. 3 $60.75
Merck Sharp & Dohme LLC 2 $35.15
ABBVIE INC. 1 $30.62
Janssen Pharmaceuticals, Inc 1 $25.47

By nature of payment

Food and Beverage
$302

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
42
Patients
12
Total drug cost
$228
Drug Type Claims Patients Total cost
Amlodipine Besylate Generic 17 0 $89
Prednisone Generic 14 12 $53
Clopidogrel (Clopidogrel Bisulfate) Brand 11 0 $86

Hospital affiliations

CMS Hospital Compare