Individual provider Active NPI

Michael Kenneth Masseria, CRNA

  • Certified Registered Nurse Anesthetist
  • Stony Brook, NY
National Provider Identifier
1811454051
Registry record updated Mar 12, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
686773 Issued in NY
Practice address
Stony Brook University Medical Center
HSC Level 4 - Room 060
Stony Brook, NY 11794-8480
Phone
(631) 444-2975
NPI assigned
Feb 25, 2019
Last updated
Mar 12, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 12, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Acute Care Nurse Practitioner 363LA2100X 431879 NY
Certified Registered Nurse Anesthetist 367500000X 686773 NY Primary

Addresses

Primary practice location

Stony Brook University Medical Center
HSC Level 4 - Room 060
Stony Brook, NY 11794-8480

Mailing address

Stony Brook University Medical Center
HSC Level 4 - Room 060
Stony Brook, NY 11794-8480
Phone (631) 444-2975

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20200421000793 NY Practitioner - Certified Registered Nurse Anesthetist (Crna) 4587094271 Reassigns benefits to 8 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
University of Missouri, Columbia School of Medicine, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Long Island Anesthesiologists, PLLCGroup PAC ID 5799677902, 44 clinicians
North Shore - Lij Anesthesiology, PCGroup PAC ID 1153602453, 990 clinicians
New York UniversityGroup PAC ID 1355232422, 5,925 clinicians

Practice addresses (Care Compare)

1 Healthy Way
Oceanside, NY 11572-1551
Phone (516) 632-3000

1000 Montauk Hwy
West Islip, NY 11795-4927
Phone (631) 376-4444

301 E Main St
Bay Shore, NY 11706-8408
Phone (914) 666-8866

530 1St Ave
New York, NY 10016-6402

550 1St Ave
New York, NY 10016-6402
Phone (212) 263-6037

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
90.8 of 100Reported as group
Quality
91.79
Promoting interoperability
100
Improvement activities
40
Cost
75.18

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

State licenses

LicenseStateTypeSpecialty
431879NYMDRegistered Nurse
686773NYMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
New York University CurrentSince Feb 1, 2024 Accepting new patients
Suffolk Anesthesiology Associates, PC CurrentSince Mar 1, 2025 Accepting new patients
Long Island Digestive Endoscopy Center, LLC CurrentSince Jun 22, 2022 Accepting new patients
Office Based Anesthesia LLC CurrentSince Mar 1, 2025 Accepting new patients
Icahn School of Medicine at Mount Sinai Nurse Anesthetist, Certified Registered CurrentSince Dec 2, 2025 Accepting new patients
Long Island Anesthesiologists, PLLC CurrentSince Jun 5, 2025 Accepting new patients
New York University Current Accepting new patients
Long Island Anesthesia Physicians LLP CurrentSince Apr 1, 2020 Accepting new patients
New York University CurrentSince Feb 1, 2024 Accepting new patients
University Hospital at Stony Brook Current Accepting new patients

Locations

975 Stewart Ave
Garden City, NY 11530
Phone (516) 222-8600

310 E 14th St
New York, NY 10003
Phone (212) 979-4000

530 1st Ave
New York, NY 10016
Phone (212) 263-7216

1 Healthy Way
Oceanside, NY 11572
Phone (516) 255-1581

1500 Route 112
Bldg 5
Port Jefferson Station, NY 11776
Phone (631) 470-1450

200 Belle Terre Rd
Prt Jefferson, NY 11777
Phone (631) 474-6000

50 Route 25A
Smithtown, NY 11787
Phone (631) 465-6225

1000 Montauk Hwy
West Islip, NY 11795
Phone (516) 705-2689

Networks

  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H1722
  • Healthfirst Medicare Network H9678
  • Healthfirst Medicare Network H3359

Interoperability endpoints

  • Direct secure messaging: michael.masseria@direct.stonybrookmedicine.edu

Organizations & group practices 11

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 4

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1551052800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741737600000",
    "number": "1811454051",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "STONY BROOK UNIVERSITY MEDICAL CENTER",
            "address_2": "HSC LEVEL 4 - ROOM 060",
            "city": "STONY BROOK",
            "state": "NY",
            "postal_code": "117948480",
            "telephone_number": "631-444-2975"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "STONY BROOK UNIVERSITY MEDICAL CENTER",
            "address_2": "HSC LEVEL 4 - ROOM 060",
            "city": "STONY BROOK",
            "state": "NY",
            "postal_code": "117948480",
            "telephone_number": "631-444-2975"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASSERIA",
        "first_name": "MICHAEL",
        "middle_name": "KENNETH",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-02-25",
        "last_updated": "2025-03-12",
        "certification_date": "2025-03-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "NY",
            "license": "431879",
            "primary": false
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "NY",
            "license": "686773",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Stony Brook, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.