NPIMap

Individual provider Active NPI

Marc Sherwin

  • Anesthesiology Physician
  • New Haven, CT
National Provider Identifier
1023435476
Registry record updated Jun 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
81728 Issued in CT
Practice address
20 York St
New Haven, CT 06510
Phone
(203) 785-2802
NPI assigned
Mar 24, 2014
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 4, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 291705 NY
Student in an Organized Health Care Education/Training Program 390200000X
Anesthesiology Physician 207L00000X 81728 CT Primary

Addresses

Primary practice location

20 York St
New Haven, CT 06510

Mailing address

333 Cedar St
TMP 3
New Haven, CT 06510

Other practice location 1

1 Gustave L Levy Pl
Anesthsiology Dept
New York, NY 10029-6500
Phone (212) 241-6426

Other identifiers 1

IdentifierTypeStateIssuer
05288344MedicaidNY

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY, CT2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20180619002231 NY Practitioner - Anesthesiology 3375898158 Reassigns benefits to 1 organization
I20251028001096 CT Practitioner - Anesthesiology 3375898158 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Other, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Fpa Hospital BasedGroup PAC ID 4789826694, 423 clinicians
Yale UniversityGroup PAC ID 9436061736, 2,632 clinicians

Practice addresses (Care Compare)

1 Gustave L Levy PL
New York, NY 10029-6504
Phone (212) 241-6426

20 York St
New Haven, CT 06510-3220
Phone (203) 785-4638

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
81728CTMDAnesthesiology Physician
291705NYMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Fpa Hospital Based Anesthesiology CurrentSince Jul 1, 2018 Accepting new patients
Fpa Hospital Based CurrentSince Jul 1, 2018 Accepting new patients
Yale University CurrentSince Oct 2, 2025 Accepting new patients
Yale University CurrentSince Oct 2, 2025 Accepting new patients
Yale University Anesthesiology Current Accepting new patients
Fpa Hospital Based Current Accepting new patients

Locations

333 Cedar St
#3
New Haven, CT 06510
Phone (203) 737-1549

800 Howard Ave
New Haven, CT 06519
Phone (203) 785-2140

20 York St
North Haven, CT 06510
Phone (203) 688-2433

1176 5th Ave
New York, NY 10029
Phone (212) 241-6237

Organizations & group practices 6

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 8

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": "1395619200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748995200000",
    "number": "1023435476",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "333 CEDAR ST",
            "address_2": "TMP 3",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "06510"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 YORK ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "06510",
            "telephone_number": "203-785-2802"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Gustave L Levy Pl",
            "address_2": "Anesthsiology Dept",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100296500",
            "country_code": "US",
            "telephone_number": "212-241-6426",
            "fax_number": "212-876-3906",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SHERWIN",
        "first_name": "MARC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-03-24",
        "last_updated": "2025-06-04",
        "certification_date": "2025-06-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "NY",
            "license": "291705",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CT",
            "license": "81728",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "05288344",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.