Individual provider Active NPI

Alyssa Korenstein, MD

  • Family Medicine Physician
  • New York, NY
National Provider Identifier
1801320825
Registry record updated Mar 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
303024 Issued in NY
Practice address
25 Hudson St
New York, NY 10013-3802
Phone
(888) 663-6331
Fax
(415) 252-7176
NPI assigned
Apr 17, 2017
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 19, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 0000000 AZ
Family Medicine Physician 207Q00000X 303024 NY Primary

Addresses

Primary practice location

25 Hudson St
New York, NY 10013-3802

Mailing address

129 W 29TH St FL 10
New York, NY 10001-5105
Phone (415) 658-6791

Other practice location 1

1300 N 12th St
suite 605
Phoenix, AZ 85006-2848
Phone (602) 839-5271

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
I20200625002626 NY Practitioner - Family Practice 6709118565 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
University of Arizona College of Medicine, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
One Medical of Ny PCGroup PAC ID 3274713110, 72 clinicians

Practice addresses (Care Compare)

25 Hudson St
New York, NY 10013-3919
Phone (888) 663-6331

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
0000000AZMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Montefiore Medical Center CurrentSince Jan 13, 2026 Accepting new patients
One Medical of Ny, P.C. Family Medicine CurrentSince Jan 13, 2026 Accepting new patients
Montefiore Medical Center CurrentSince Jan 13, 2026 Accepting new patients

Locations

111 E 210th St
Bronx, NY 10467

919 3rd Ave
Ste 105
New York, NY 10022
Phone (212) 530-0650

25 Hudson St
New York, NY 10013
Phone (212) 441-4401

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1492387200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742342400000",
    "number": "1801320825",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "129 W 29TH ST FL 10",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100015105",
            "telephone_number": "415-658-6791",
            "fax_number": "415-520-0904"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "25 HUDSON ST",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100133802",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1300 N 12th St",
            "address_2": "suite 605",
            "address_purpose": "LOCATION",
            "city": "Phoenix",
            "state": "AZ",
            "postal_code": "850062848",
            "country_code": "US",
            "telephone_number": "602-839-5271",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KORENSTEIN",
        "first_name": "ALYSSA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-04-17",
        "last_updated": "2025-03-19",
        "certification_date": "2025-03-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "AZ",
            "license": "0000000",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "NY",
            "license": "303024",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.