Individual provider Active NPI

Leroi Stephenson, M.D.

  • Anesthesiology Physician
  • New Haven, CT
National Provider Identifier
1598909384
Registry record updated Jun 28, 2010
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
048844 Issued in CT
Practice address
333 Cedar St
TMP 3
New Haven, CT 06510-3206
Phone
(203) 785-2802
NPI assigned
Apr 24, 2009
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 28, 2010

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Anesthesiology Physician 207L00000X 235862 NY
Anesthesiology Physician 207L00000X 048844 CT Primary

Addresses

Primary practice location

333 Cedar St
TMP 3
New Haven, CT 06510-3206

Mailing address

333 Cedar St
TMP 3
New Haven, CT 06510-3206
Phone (203) 785-2802

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY, NJ, MI3 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20150317000161 NY Practitioner - Anesthesiology 0749472132 Reassigns benefits to 4 organizations
I20251201003749 NJ Practitioner - Anesthesiology 0749472132 Reassigns benefits to 1 organization
I20260115001286 MI Practitioner - Anesthesiology 0749472132 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Other, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Physician Affiliate Group of New York PCGroup PAC ID 4688098833, 1,222 clinicians
Rwjbh Observation Associates LLCGroup PAC ID 5193137503, 995 clinicians

Practice addresses (Care Compare)

100 Michigan Ave NE
Grand Rapids, MI 49503-2560

100 Michigan St NE RM
280 Corewell Health Medical Group West
Grand Rapids, MI 49503-2560
Phone (616) 267-0115

4444 Kalamazoo Ave SE
200 Corewell Health Medical Group West
Kentwood, MI 49508-4600
Phone (616) 391-5600

506 Lenox Ave
New York, NY 10037-1802
Phone (212) 939-1840

99 Hwy 37 W
Community Medical Center
Toms River, NJ 08755-6423
Phone (732) 557-8000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
048844CTMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Rwjbh Observation Associates LLC Anesthesiology CurrentSince Sep 20, 2025 Accepting new patients
Physicians of University Hospital, PC Current Accepting new patients
Spectrum Health Primary Care Partners Current Accepting new patients
Physicians of University Hospital, PC Anesthesiology CurrentSince Jun 6, 2018 Accepting new patients
Physicians of University Hospital, PC Anesthesiology CurrentSince Jun 6, 2018 Accepting new patients
Spectrum Health Primary Care Partners Anesthesiology CurrentSince Feb 9, 2026 Accepting new patients
Physician Affiliate Group of New York PC CurrentSince Jul 5, 2025 Accepting new patients
Westchester Medical Center Advanced Physician Services, PC Anesthesiology Current Accepting new patients
North Shore - Lij Anesthesiology, PC Anesthesiology CurrentSince Jul 1, 2019 Accepting new patients
Westchester Medical Center Advanced Physician Services PC Anesthesiology CurrentSince May 1, 2015 Accepting new patients

Locations

4444 Kalamazoo Ave SE
Ste 200
Kentwood, MI 49508
Phone (616) 391-5600

110 Rehill Ave
Somerville, NJ 08876
Phone (908) 429-5833

99 State Route 37 W
Toms River, NJ 08755
Phone (732) 240-8000

1 Hamilton Health Pl
Trenton, NJ 08690
Phone (609) 584-6763

301 Montauk Hwy
Bay Shore, NY 11706
Phone (631) 630-3977

2601 Ocean Pkwy
Brooklyn, NY 11235
Phone (718) 616-5354

195 E Main St
Huntington, NY 11743
Phone (631) 385-8677

301 N Main St
Ste 2
New City, NY 10956
Phone (845) 638-0040

210 E 64th St
New York, NY 10065
Phone (212) 434-4312

506 Malcolm X Blvd
New York, NY 10037
Phone (212) 939-1000

210 E 64th St
Fl 5
New York, NY 10065
Phone (212) 434-2700

100 E 77th St
New York, NY 10075
Phone (212) 434-2606

401 Seaview Ave
Lowr
Staten Island, NY 10305
Phone (718) 226-6186

242 Mason Ave
Staten Island, NY 10305
Phone (718) 226-1458

1 Edgewater St
Fl 6
Staten Island, NY 10305
Phone (718) 226-1047

100 Woods Rd
Valhalla, NY 10595
Phone (914) 490-7000

Networks

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

Interoperability endpoints

  • Direct secure messaging: lstephenson1296432@nychhc.direct-ci.com

Organizations & group practices 10

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 3

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": "1240531200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1277683200000",
    "number": "1598909384",
    "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": "065103206",
            "telephone_number": "203-785-2802"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "333 CEDAR ST",
            "address_2": "TMP 3",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103206",
            "telephone_number": "203-785-2802"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEPHENSON",
        "first_name": "LEROI",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-04-24",
        "last_updated": "2010-06-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "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": "NY",
            "license": "235862",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CT",
            "license": "048844",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.