Individual provider Active NPI

Brian T Sim, CRNA

  • Certified Registered Nurse Anesthetist
  • Boston, MA
National Provider Identifier
1598730491
Registry record updated Mar 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
RN233053 Issued in MA
Practice address
1 Boston Medical Ctr PL
Boston, MA 02118-2908
Phone
(617) 638-6950
Fax
(617) 638-6966
NPI assigned
Feb 22, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 12, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X RN233053 MA Primary

Addresses

Primary practice location

1 Boston Medical Ctr PL
Boston, MA 02118-2908

Mailing address

960 Massachusetts Avenue
FL 2
Boston, MA 02118

Other practice location 1

235 N Pearl St
Brockton, MA 02301-1794
Phone (508) 427-3000

Other identifiers 2

IdentifierTypeStateIssuer
3148794MedicaidNH
110123503AMedicaidMA

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20050927000513 MA Practitioner - Certified Registered Nurse Anesthetist (Crna) 5496789687 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Boston University Medical Center Anesthesiologists IncGroup PAC ID 5092055236, 89 clinicians
Gbaa Holdings PLLCGroup PAC ID 4789944646, 22 clinicians
BMC Affiliated Physicians, Inc.Group PAC ID 9830133123, 543 clinicians
South Suburban Gastroenterology PCGroup PAC ID 9931194412, 50 clinicians

Practice addresses (Care Compare)

1 Boston Medical Ctr PL
Boston, MA 02118-2908
Phone (617) 638-6950

175 Worcester St
Wellesley, MA 02481-5514
Phone (617) 754-0800

235 N Pearl St
Brockton, MA 02301-1794
Phone (508) 427-3000

97 Libbey Pkwy
Suite 300
Weymouth, MA 02189-3110
Phone (781) 331-2922

Hospital & facility affiliations

  • Good Samaritan Medical Center Hospital, Brockton, MA, CCN 220111
  • Boston Medical Center Hospital, Boston, MA, CCN 220031

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Gbaa Holdings, PLLC Nurse Anesthetist, Certified Registered CurrentSince Dec 1, 2023 Accepting new patients
BMC Affiliated Physicians, Inc. CurrentSince Apr 1, 2025 Accepting new patients
South Suburban Gastroenterology, PC CurrentSince Jan 7, 2026 Accepting new patients
Steward Medical Group, Inc CurrentSince Nov 30, 2018 Accepting new patients
Boston University Medical Center Anesthesiologists, Inc. Nurse Anesthetist, Certified Registered CurrentSince Feb 1, 2025 Accepting new patients
Steward Medical Group, Inc Nurse Anesthetist, Certified Registered CurrentSince Nov 30, 2018 Accepting new patients
Weymouth Endoscopy, LLC PastSince Jan 7, 2026 Accepting new patients

Locations

45 Discovery Way
#A
Acton, MA 01720
Phone (617) 936-7683

138 Haverhill St
Andover, MA 01810
Phone (978) 296-2302

725 Albany St
#7C
Boston, MA 02118
Phone (617) 638-6950

960 Massachusetts Ave
Ste 2
Boston, MA 02118

736 Cambridge St
Brighton, MA 02135
Phone (617) 789-2762

235 N Pearl St
Brockton, MA 02301
Phone (508) 427-2525

800 Washington St
Norwood, MA 02062
Phone (781) 278-6264

114 Whitwell St
Quincy, MA 02169
Phone (617) 376-4018

1 Boston Medical Ctr Pl
Roxbury, MA 02118
Phone (617) 414-5245

907 Sumner St
Ste M201
Stoughton, MA 02072

175 Worcester St
Wellesley Hls, MA 02481
Phone (617) 272-0004

120 W Center St
West Bridgewater, MA 02379
Phone (508) 230-8181

97 Libbey Park
Ste 300
Weymouth, MA 02189
Phone (781) 331-2922

1085 Main St
Weymouth, MA 02190
Phone (781) 331-2922

Interoperability endpoints

  • Direct secure messaging: bsim12100@direct.bmc.masshiway.net

Organizations & group practices 7

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

Hospital & facility affiliations 9

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": "1140566400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773273600000",
    "number": "1598730491",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "960 MASSACHUSETTS AVENUE",
            "address_2": "FL 2",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02118"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 BOSTON MEDICAL CTR PL",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021182908",
            "telephone_number": "617-638-6950",
            "fax_number": "617-638-6966"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "235 N Pearl St",
            "address_purpose": "LOCATION",
            "city": "Brockton",
            "state": "MA",
            "postal_code": "023011794",
            "country_code": "US",
            "telephone_number": "508-427-3000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIM",
        "first_name": "BRIAN",
        "middle_name": "T",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-22",
        "last_updated": "2026-03-12",
        "certification_date": "2026-03-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MA",
            "license": "RN233053",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3148794",
            "state": "NH"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "110123503A",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 12, 2026; 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.