NPIMap

Individual provider Active NPI

Caroline Korsten Messer, MD

  • Endocrinology, Diabetes & Metabolism Physician
  • New York, NY
National Provider Identifier
1386855047
Registry record updated Jun 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X
License
242804 Issued in NY
Practice address
110 E 60TH St RM 802
New York, NY 10022-1795
Phone
(646) 760-3256
Fax
(646) 974-9714
NPI assigned
May 24, 2007
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 17, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Endocrinology, Diabetes & Metabolism Physician 207RE0101X 242804 NY Primary
Internal Medicine Physician 207R00000X 242804 NY

Addresses

Primary practice location

110 E 60TH St RM 802
New York, NY 10022-1795

Mailing address

110 E 60TH St RM 802
New York, NY 10022-1795
Phone (646) 760-3256

Other identifiers 2

IdentifierTypeStateIssuer
A400029375OtherNYMEDICARE PTAN
03184636MedicaidNY

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.
Opted out of Medicare
Yes, effective Apr 1, 2017 through Apr 1, 2027

Care Compare profile

Medicare Care Compare
Specialty
EndocrinologyAlso: Internal Medicine
Education
Icahn School of Medicine at Mount Sinai, 2005
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

16 Atlantic Ave
Lynbrook, NY 11563-3046

1979 Maqrcus Ave
Suite C101
New Hyde Park, NY 11042-1076

1979 Marcus Ave
Suite C101
New Hyde Park, NY 11040-1076

972 Brush Hollow Rd
Westbury, NY 11590-1740

Hospital & facility affiliations

  • Hospital for Special Surgery Hospital, New York, NY, CCN 330270
  • Suny/Stony Brook University Hospital Hospital, Stony Brook, NY, CCN 330393

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
CKM Medical PLLC CurrentSince Feb 13, 2022 Accepting new patients

Locations

110 E 60th St
Rm 802
New York, NY 10022
Phone (646) 760-3256

Organizations & group practices 1

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 16

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 16

NPI Registry JSON

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

{
    "created_epoch": "1179964800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781654400000",
    "number": "1386855047",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "110 E 60TH ST RM 802",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100221795",
            "telephone_number": "646-760-3256",
            "fax_number": "646-974-9714"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "110 E 60TH ST RM 802",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100221795",
            "telephone_number": "646-760-3256",
            "fax_number": "646-974-9714"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MESSER",
        "first_name": "CAROLINE",
        "middle_name": "KORSTEN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-24",
        "last_updated": "2026-06-17",
        "certification_date": "2026-06-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "NY",
            "license": "242804",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "242804",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "A400029375",
            "state": "NY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "03184636",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.