Marie Louies Lamsen, M.D.
Internal Medicine Physician · Danbury, CT
Marie Louies Lamsen, M.D. is an internal medicine physician with a practice address in Danbury, Connecticut, and NPI 1982975710, issued on Jan 25, 2012. Check the license (Connecticut 70095, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Marie Louies Lamsen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 70095 CT
274350 NY
Self-reported in NPPES; status is on the state search - Practice location
- 24 Hospital Ave, Danbury, CT 06810
- Phone
- (203) 739-6959
- Enumerated
- Jan 25, 2012
- Record last updated
- Jan 31, 2022
- Medicare enrollment
- Enrolled (PECOS I20220310000414); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 24 Hospital Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jacqueline AddonaStudent in an Organized Health Care Education/Training Program1669232443
- Fernando Afonso, M.D.Internal Medicine Physician1992980536
- Alka Aggarwal, MDInternal Medicine Physician1427041987
- Mohamed Ahmed, M.D.Internal Medicine Physician1235391756
- Syed Rakin Ahmed, MD, PHDStudent in an Organized Health Care Education/Training Program1518809870
- Gregory Albert, MDAnesthesiology Physician1588797930
Verify Marie Louies Lamsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 70095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
186 Medicare Part D claims for 87 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Pantoprazole Sodium17 claims
- Prednisone16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $301.99
8 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- East Post Road Medical Services PCWhite Plains, NY
- North Shore-Lij Medical PCMount Kisco, NY
- Nuvance Health Medical Practice CT IncDanbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marie Louies Lamsen among 2,623 internal medicine physician records in Connecticut
Marie Louies Lamsen, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 67% of them.
- NPI issued2012 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · median 2004 among the 1,646 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
112 internal medicine physician records list a practice address in Danbury
They are 112 of the 2,412 NPPES records with a practice address in Danbury, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Danbury → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alka Aggarwal, MDDanbury, CT 068101427041987
- Charles Cahn, M.D.Danbury, CT 068101720064504
- Karen Coblens, MDDanbury, CT 068101063479848
- Allen Davis, M.D.Danbury, CT 068101639163439
- Amin Elashker, DODanbury, CT 068101093794182
- Sateesh Kathiravelu, M.D.Danbury, CT 068101083665244
- Asha Marhatta, MD; MPHDanbury, CT 068101366490013
- Kathleen Mauks, M.D.Danbury, CT 068101629064035
Common questions
What is Marie Louies Lamsen, M.D.'s NPI number?
Marie Louies Lamsen, M.D.'s National Provider Identifier (NPI) is 1982975710, issued on Jan 25, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Marie Louies Lamsen, M.D. located?
The NPPES record lists a practice address at 24 Hospital Ave, Danbury, CT, 06810. Phone: (203) 739-6959. Providers update this record themselves, so call before visiting.
How can I verify Marie Louies Lamsen, M.D.'s license?
NPPES lists Connecticut license number 70095, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marie Louies Lamsen, M.D. prescribe under Medicare Part D?
In 2024, Marie Louies Lamsen, M.D. had 186 Medicare Part D claims for 87 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Marie Louies Lamsen, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.