1. Home
  2. Directory
  3. Massachusetts
  4. Westwood
  5. Nurse Anesthetist Certified Registered
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARIANNE COSSARD CRNA
NPI 1033698345
Nurse Anesthetist, Certified Registered in Westwood, MA

Active since August 08, 2018PECOS EnrolledAccepts Medicare Assignment
690 CANTON ST STE 325, WESTWOOD, MA 02090(781) 407-7713 Get Directions Write a Review

NPPES record last updated: October 8, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 8, 2026, Feb 20, 2025, Sep 14, 2022 and 1 more (4 updates tracked since 2018).

About Marianne Cossard Crna NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIANNE COSSARD CRNA (NPI 1033698345) is an individual nurse anesthetist, certified registered in Westwood, Massachusetts, licensed in Massachusetts (RN2305412) and active in the NPI registry since August 2018. She is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1033698345
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameMARIANNE COSSARDCredential: CRNA
Location Address690 CANTON ST STE 325Westwood, MA 02090-2324
Mailing Address690 Canton St Ste 325Westwood, MA 02090-2324 · (781) 407-7713
Phone(781) 407-7713
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateAugust 8, 2018
Last NPPES UpdateOctober 8, 20264 updates tracked since enumeration
NPPES CertifiedOctober 8, 2026
✔ NPI 1033698345 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
Licenses✔ Licensed in MA · RN2305412✔ Licensed in FL · APRN11016190
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
690 CANTON ST STE 325, Westwood, MA 02090
Open in Google Maps ↗

Secondary Practice Locations 2

Location 141 Mall RdBurlington, MA 01805-2324 · Phone (781) 744-8000
Location 2736 Cambridge StBrighton, MA 02135 · Phone (617) 789-3000

Other Identifiers 1

Other2305412MA · License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marianne Cossard Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5294089405
PECOS Enrollment IDI20181106002917
Eligible to Order & Refer✔ Part B Labs & Imaging– Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Marianne Cossard reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Brigham & Womens Physicians Organization Inc
9.7 mi
Internal Medicine
75 FRANCIS ST
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 4,574 clinicians in this Medicare group
NPI 1033535497 (617) 732-5500
Coastal Medical Associates
11 mi
Anesthesiology
55 FOGG RD
Weymouth, MA 02190
  • Reassigned Medicare billing, Massachusetts enrollment
  • 671 clinicians in this Medicare group
NPI 1932175684 (781) 340-4293
Beth Israel Lahey Health Specialty Care, Inc.
21 mi
Urology
41 MALL RD LAHEY HOSPITAL & MEDICAL CENTER
Burlington, MA 01805
  • Reassigned Medicare billing, Massachusetts enrollment
  • 477 clinicians in this Medicare group
NPI 1427161660 (978) 927-0714
Gulf-To-Bay Anesthesiology Associates LLC
1,139 mi
Anesthesiology
13100 FORT KING RD
Dade City, FL 33525
  • Reassigned Medicare billing, Florida enrollment
  • 1,287 clinicians in this Medicare group
NPI 1982932562 (813) 844-4434

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on skin of arms, legs, and front body 00400
Anesthesia for procedures on the skin of your arms, legs, and front body is a service that numbs the area being treated. This ensures you don't feel pain during procedures like biopsies, stitches, or minor surgeries. It's administered through a small injection or a topical cream.
12 services12 patients
Anesthesia for other procedure on urinary system through urethra 00910
Anesthesia for a procedure on the urinary system through the urethra involves using medicine to numb sensation in the area. This is done to ensure you feel no pain or discomfort during the procedure. The medicine can be given locally, regionally, or generally, depending on the specifics of your procedure.
12 services11 patients
Anesthesia for total hip replacement 01214
Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.
12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220110
Location75 Francis StreetBoston, MA 02115 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02090 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SAMMY KIMANI
Nurse Anesthetist, Certified Registered
690 CANTON ST STE 325
WESTWOOD, MA 02090
Norfolk County (781) 407-7713
MATTHEW J MARENGI CRNA
Nurse Anesthetist, Certified Registered
690 CANTON ST STE 325
WESTWOOD, MA 02090
Norfolk County (781) 407-7713
NOREEN MARTINA O'CONNELL CRNA
Nurse Anesthetist, Certified Registered
690 CANTON ST STE 325
WESTWOOD, MA 02090
Norfolk County (781) 407-7713
NICHOLAS FERRARI CRNA
Nurse Anesthetist, Certified Registered
690 CANTON ST STE 325
WESTWOOD, MA 02090
Norfolk County (781) 407-7713
DANIEL C FLORES CRNA
Nurse Anesthetist, Certified Registered
690 CANTON ST STE 325
WESTWOOD, MA 02090
Norfolk County (781) 915-0218

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marianne Cossard's NPI number?

The NPI number for Marianne Cossard is 1033698345. It was assigned to this individual provider in the NPPES registry on August 8, 2018.

Where is Marianne Cossard located?

Marianne Cossard practices at 690 Canton St Ste 325, Westwood, MA 02090. The listed phone number is (781) 407-7713.

What is Marianne Cossard's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Marianne Cossard enrolled in Medicare?

Yes. Marianne Cossard is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Marianne Cossard's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marianne Cossard reassigns Medicare benefits to 4 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA), Coastal Medical Associates (Weymouth, MA), Beth Israel Lahey Health Specialty Care, Inc. (Burlington, MA) and Gulf-To-Bay Anesthesiology Associates LLC (Dade City, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marianne Cossard's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Marianne Cossard affiliated with any hospitals?

According to CMS data, Marianne Cossard is affiliated with Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Marianne Cossard was last updated on October 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.