Marissa Griecci, CRNA - Medicare Certified Registered Nurse Anesthetist (crna) in Boston, MA

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Marissa Griecci, CRNA is a medicare enrolled "Nurse Anesthetist, Certified Registered" in Boston, Massachusetts. She graduated from nursing school in 2010 and has 14 years of diverse experience with area of expertise as Certified Registered Nurse Anesthetist (crna). She is a member of the group practice Massachusetts General Physicians Organization Inc and her current practice location is 55 Fruit St, Boston, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (617) 726-2000.

Marissa Griecci is licensed to practice in Massachusetts (license number RN278215) 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 1992020952.

Contact Information

Marissa Griecci, CRNA
55 Fruit St,
Boston, MA 02114-2621
(617) 726-2000
(617) 643-7972

Map and Direction




Provider's Profile

Full NameMarissa Griecci
GenderFemale
SpecialityCertified Registered Nurse Anesthetist (crna)
Experience14 Years
Location55 Fruit St, Boston, Massachusetts
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 Griecci graduated from nursing school in 2010
  NPI Data:
  • NPI Number: 1992020952
  • Provider Enumeration Date: 04/02/2010
  • Last Update Date: 04/17/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6800910670
  • Enrollment ID: I20100831000428

Medical Identifiers

Medical identifiers for Marissa Griecci such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992020952NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
367500000XNurse Anesthetist, Certified Registered RN278215 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
North Shore Medical Center -Salem, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Massachusetts General Physicians Organization Inc24663658203084

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 Griecci allows following entities to bill medicare on her behalf.
Entity NameMassachusetts General Physicians Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801874573
PECOS PAC ID: 2466365820
Enrollment ID: O20031111000434
Entity NameBoston Advanced Medicine Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437232485
PECOS PAC ID: 4486551272
Enrollment ID: O20031218000703
Entity NameIntegrated Gastroenterology Consultants, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477553287
PECOS PAC ID: 0941260897
Enrollment ID: O20041014000713
Entity NameDigestive Health Specialists, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205895257
PECOS PAC ID: 7416911011
Enrollment ID: O20041115000039
Entity NameLowell Anesthesia Associates Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063938934
PECOS PAC ID: 1951677228
Enrollment ID: O20171101001318
Entity NameDha Endoscopy Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851921555
PECOS PAC ID: 4082614979
Enrollment ID: O20201201000565

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 Griecci 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 Griecci, CRNA
55 Fruit St,
Boston, MA 02114-2621

Ph: (617) 643-7972		Marissa Griecci, CRNA
55 Fruit St,
Boston, MA 02114-2621

Ph: (617) 726-2000

Reviews and Comments


Nurse Anesthetist, Certified Registered Nurses in Boston, MA

Mr. John Crawford Welch, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 300 Longwood Ave, Bader 3- Anesthesia, Boston, MA 02115
Phone: 857-218-5770    
Sophia N. Townsend, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 1 Boston Medical Ctr Pl, Boston, MA 02118
Phone: 617-638-6950    Fax: 617-638-6966
Lorrie-jeanne Campbell, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 330 Brookline Ave, Dept. Of Anesthesia, Boston, MA 02215
Phone: 617-667-3110    Fax: 617-667-5013
Colleen Mcartor, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 750 Washington St, Nemc Box #7105, Boston, MA 02111
Phone: 617-636-5000    
Ms. Ann Marie Nichols-stout, CRNA
Nurse Anesthetist - CR
Medicare: Not Enrolled in Medicare
Practice Location: 55 Fruit St, Massachusetts General Hospital, Boston, MA 02114
Phone: 617-726-8995    
Susan Maher, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 55 Fruit Street, Cln 309 Mgh Anesthesia Associates, Boston, MA 02114
Phone: 617-726-3030    
Amy T. Moor, CRNA
Nurse Anesthetist - CR
Medicare: Accepting Medicare Assignments
Practice Location: 1 Boston Medical Ctr Pl, Boston, MA 02118
Phone: 617-638-6950    Fax: 617-638-6966

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.