Marissa Defreese, MD - Medicare General Surgery in Stamford, CT

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Marissa Defreese, MD is a medicare enrolled "Surgery - Surgical Critical Care" physician in Stamford, Connecticut. She graduated from medical school in 2003 and has 21 years of diverse experience with area of expertise as General Surgery. She is a member of the group practice Acute Care Surgery Medical Group Inc, Jaspreet Somal M.d., A.p.c., Kern County Hospital Authority, Northridge Trauma Surgeons Inc A Medical Corporation and her current practice location is 29 Hospital Plaza, 6th Floor, Stamford, Connecticut. You can reach out to her office (for appointments etc.) via phone at (203) 276-5959.

Marissa Defreese is licensed to practice in Connecticut (license number 047916) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1194963462.

Contact Information

Marissa Defreese, MD
29 Hospital Plaza, 6th Floor,
Stamford, CT 06902-2419
(203) 276-5959
(203) 276-5969

Map and Direction




Physician's Profile

Full NameMarissa Defreese
GenderFemale
SpecialityGeneral Surgery
Experience21 Years
Location29 Hospital Plaza, Stamford, Connecticut
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Marissa Defreese graduated from medical school in 2003
  NPI Data:
  • NPI Number: 1194963462
  • Provider Enumeration Date: 01/26/2009
  • Last Update Date: 02/07/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 3072709138
  • Enrollment ID: I20180830003141

Medical Identifiers

Medical identifiers for Marissa Defreese such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194963462NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery 047916 (Connecticut)Secondary
2086S0102XSurgery - Surgical Critical Care 047916 (Connecticut)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Los Robles Hospital & Medical CenterThousand oaks, CAHospital
Northridge Hospital Medical CenterNorthridge, CAHospital
Kern Medical CenterBakersfield, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Acute Care Surgery Medical Group Inc7214006816146
Jaspreet Somal M.d., A.p.c.08406046909
Kern County Hospital Authority4688964521214
Northridge Trauma Surgeons Inc A Medical Corporation256782882510

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Marissa Defreese allows following entities to bill medicare on her behalf.
Entity NameAcute Care Surgery Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700069549
PECOS PAC ID: 7214006816
Enrollment ID: O20080522000355
Entity NameWound Md Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1942606744
PECOS PAC ID: 8820314529
Enrollment ID: O20150223001584
Entity NameOaks Surgical Specialists A Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538560842
PECOS PAC ID: 2365769635
Enrollment ID: O20150325001386
Entity NameKern County Hospital Authority
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376623538
PECOS PAC ID: 4688964521
Enrollment ID: O20160915002690
Entity NameWound Healing Care Specialists Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306317961
PECOS PAC ID: 5698019602
Enrollment ID: O20181203001136
Entity NameJaspreet Somal M.d., A.p.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154917318
PECOS PAC ID: 0840604690
Enrollment ID: O20210205002333
Entity NameNorthridge Trauma Surgeons Inc A Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1255418745
PECOS PAC ID: 2567828825
Enrollment ID: O20230512000129

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Marissa Defreese is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Marissa Defreese, MD
29 Hospital Plaza, 6th Floor,
Stamford, CT 06902-2419

Ph: (203) 276-5959		Marissa Defreese, MD
29 Hospital Plaza, 6th Floor,
Stamford, CT 06902-2419

Ph: (203) 276-5959

Reviews and Comments


Surgery Doctors in Stamford, CT

Dr. William James Symons, MD
Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 29 Hospital Plaza, Suite 603, Stamford, CT 06902
Phone: 203-276-5959    Fax: 203-276-5969
Dr. Sarah Patricia Cate, MD
Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 32 Strawberry Hill Ct., 4th Floor, Ste. 8, Stamford, CT 06902
Phone: 203-276-4255    Fax: 203-276-4259
Dr. James M. Feeney, MD, FACS
Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 29 Hospital Plz Ste 603, Stamford, CT 06902
Phone: 203-276-5959    Fax: 203-276-5969
Amanda Patel, MD
Surgery
Medicare: Medicare Enrolled
Practice Location: 29 Hospital Plz Ste 603, Stamford, CT 06902
Phone: 203-276-5959    Fax: 203-276-5969
Swapna Ghanta, MD
Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 32 Strawberry Hill Ct, 4th Floor, Ste 8, Stamford, CT 06902
Phone: 203-276-4255    Fax: 203-276-4259
Krystal A. Franklin, M.D.
Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 30 Shelburne Road, Stamford Hospital, Stamford, CT 06904
Phone: 203-276-7467    Fax: 203-276-7089

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.