Individual provider Active NPI

Stephen Kronenberg, M.D.

  • Ophthalmology Physician
  • New York, NY
National Provider Identifier
1639130529
Registry record updated Nov 20, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ophthalmology PhysicianTaxonomy code 207W00000X
License
132294 Issued in NY
Practice address
605 Park Ave Ste 1B
New York, NY 10065-7016
Phone
(212) 737-0250
Fax
(914) 222-8869
NPI assigned
Mar 30, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 20, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Ophthalmology Physician 207W00000X 045046 CT
Ophthalmology Physician 207W00000X 132294 NY Primary

Addresses

Primary practice location

605 Park Ave Ste 1B
New York, NY 10065-7016

Mailing address

605 Park Ave Ste 1B
New York, NY 10065-7016
Phone (212) 737-0250

Other identifiers 1

IdentifierTypeStateIssuer
00460848MedicaidNY

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
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 1

Enrollment IDStateProvider typePAC IDDetails
I20100714000259 NY Practitioner - Ophthalmology 5193824159 Reassigns benefits to 2 organizations
Practice locations: New York, NY

Care Compare profile

Medicare Care Compare
Specialty
Ophthalmology
Education
Other, 1977
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Union Health Center IncGroup PAC ID 1951290204, 33 clinicians
Icahn School of Medicine at Mount SinaiGroup PAC ID 2264691070, 2,809 clinicians

Practice addresses (Care Compare)

160 W 26TH St
FL 4
New York, NY 10001-6975

275 7TH Ave
FL 4
New York, NY 10001-6757
Phone (212) 924-2510

310 E 14TH St
Opthalmology Department of Mount Sinai
New York, NY 10003-4201
Phone (212) 241-0939

Hospital & facility affiliations

  • Ny Eye and Ear Infirmary of Mount Sinai Hospital, New York, NY, CCN 330100

Procedures performed for Medicare patients

ProcedureNumber of procedures
Cataract surgery1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
045046CTMDOphthalmology Physician
132294NYMDOphthalmology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Union Health Center, Inc CurrentSince Jan 31, 1983 Accepting new patients
Union Health Center CurrentSince Jan 31, 1983 Accepting new patients
Icahn School of Medicine at Mount Sinai Ophthalmology CurrentSince Jan 1, 2021 Accepting new patients
Icahn School of Medicine at Mount Sinai Ophthalmology CurrentSince Jan 1, 2021 Accepting new patients
Glenn E. Ostriker, M.D. Ophthalmology PastSince Feb 1, 2007 Accepting new patients
Union Square Eye Care LLC Ophthalmology Past Accepting new patients

Locations

160 W 26th St
Fl 4
New York, NY 10001
Phone (212) 812-3736

275 7th Ave
Fl 4
New York, NY 10001
Phone (212) 812-3542

218 2nd Ave
New York, NY 10003
Phone (212) 979-4000

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

Networks

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

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/14049/brand/10/csg/1/fhir/r4

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 1

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": "1143676800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763596800000",
    "number": "1639130529",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "605 PARK AVE STE 1B",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100657016",
            "telephone_number": "212-737-0250",
            "fax_number": "914-222-8869"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "605 PARK AVE STE 1B",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100657016",
            "telephone_number": "212-737-0250",
            "fax_number": "914-222-8869"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KRONENBERG",
        "first_name": "STEPHEN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-03-30",
        "last_updated": "2025-11-20",
        "certification_date": "2025-11-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CT",
            "license": "045046",
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "NY",
            "license": "132294",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00460848",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.