Marissa Defreese, MD
Surgical Critical Care Physician · Stamford, CT
Marissa Defreese, MD is a surgical critical care physician with a practice address in Stamford, Connecticut, and NPI 1194963462, issued on Jan 26, 2009. Check the license (Connecticut 047916, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Marissa Defreese
- Credential
- MD
- Primary taxonomy
- Surgical Critical Care Physician 2086S0102X
- License number
- 047916 CT
Self-reported in NPPES; status is on the state search - Practice location
- 29 Hospital Plaza, Stamford, CT 06902
- Phone
- (203) 276-5959
- Enumerated
- Jan 26, 2009
- Record last updated
- Feb 7, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (203) 276-5969
- Medicare enrollment
- Enrolled (PECOS I20180830003141); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical critical care physician records → All 43 in Connecticut → Look up another NPI →
Also registered at 29 Hospital Plaza
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Buckingham, MDNeurology Physician1447549639
- Salvatore Carbonaro, M.D.Cardiovascular Disease Physician1821141805
- Joonun Choi, MDCardiovascular Disease Physician1053583914
- Kathryn CreaghAdult Health Nurse Practitioner1588088355
- Evelyn Cusack, M.D.Cardiovascular Disease Physician1700874435
- Gregory D'Onofrio, M.D.Cardiovascular Disease Physician1255304796
Verify Marissa Defreese in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 047916Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 87.6 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: $291.58
3 payments; by number, the most common kind was food and beverage; the largest payer was Avita Medical Americas, Llc. The 1,092 providers of this specialty with any payment received $2,183.62 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 4 group practices
- Acute Care Surgery Medical Group IncThousand Oaks, CA
- Compassionate Critical Care Group, Inc.Northridge, CA
- Jaspreet Somal M.D., A.p.c.San Diego, CA
- Northridge Trauma Surgeons Inc A Medical CorporationNorthridge, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Defreese among 43 surgical critical care physician records in Connecticut
Marissa Defreese, MD is one of 43 surgical critical care physician records with a practice address in Connecticut. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 56% of them.
- NPI issued2009 · 56% of these records are older, 37% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2003 · median 2007 among the 34 with a school on file
- Record last updated2017 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0102X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Critical Care Physician providers in Connecticut
There are 43 surgical critical care physician records in Connecticut.
All 43 in Connecticut → Every provider in Stamford → Surgical Critical Care Physician nationwide →
The 8 surgical critical care physician records with the nearest ZIP codes
- Kevin Dwyer, M.D. FACSStamford, CT 069021417923210
- William Symons, MDStamford, CT 069021063618395
- Nicolle Burgwardt, M.D.Stamford, CT 069041144756271
- Gregory Eckenrode, M.D.Norwalk, CT 068501003234048
- Jeffrey Nicastro, MDDanbury, CT 068101285611178
- Inam Shaikh, M.DDanbury, CT 068101932332954
- Heath Walden, M.D.Danbury, CT 068101083931166
- Charles Walsh, MDDanbury, CT 068101659379832
Common questions
What is Marissa Defreese, MD's NPI number?
Marissa Defreese, MD's National Provider Identifier (NPI) is 1194963462, issued on Jan 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Defreese, MD located?
The NPPES record lists a practice address at 29 Hospital Plaza, Stamford, CT, 06902. Phone: (203) 276-5959. Providers update this record themselves, so call before visiting.
How can I verify Marissa Defreese, MD's license?
NPPES lists Connecticut license number 047916, 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.
What is Marissa Defreese, MD's MIPS final score?
The 2023 MIPS final score is 87.6 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.