Advanced Internal Medicine Group PC

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

138681 Issued in NY

Legal business name

ADVANCED INTERNAL MEDICINE GROUP PC

Practice address

2200 Northern Blvd
Suite 133
Greenvale, NY 11548-1219

Phone

(516) 352-8100

Fax

(516) 352-7348

NPI assigned

Nov 28, 2006

Last updated

Apr 29, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Dr. Leon Schwechter, DONPI 1225078314

Title

President

Phone

(516) 352-8100

Specialties & licenses 2

Addresses

Other identifiers 3

Medicare fee-for-service enrollment

Enrolled in NY

Enrollment records 1

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

Practitioners 9

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Leon E Schwechter, D.O.

  • Internal Medicine Physician
  • Greenvale, NY
  • NPI 1225078314
  Medicare reassignment Care Compare group NPD Authorized official
• Jennifer Marie Dennehy, APN

  • Adult Health Nurse Practitioner
  • Commack, NY
  • NPI 1689125478
  Medicare reassignment Care Compare group NPD
• Alicia Shakira Hamid, NURSE PRACTITIONER

  • Family Nurse Practitioner
  • Greenvale, NY
  • NPI 1831846948
  Medicare reassignment Care Compare group NPD
• Javier Morales, M.D.

  • Internal Medicine Physician
  • Greenvale, NY
  • NPI 1508806712
  Medicare reassignment Care Compare group NPD
• Neena Shah, MD

  • Internal Medicine Physician
  • Jackson Heights, NY
  • NPI 1275626210
  Medicare reassignment Care Compare group NPD
• Ania Friedrich

  • Adult Health Nurse Practitioner
  • Bronx, NY
  • NPI 1720167836
  Medicare reassignment NPD
• Keva Galdamez, FNP

  • Family Nurse Practitioner
  • New Hyde Park, NY
  • NPI 1891110912
  Medicare reassignment NPD
• Craig R Grobman, D.O.

  • Internal Medicine Physician
  • Melville, NY
  • NPI 1639119621
  Medicare reassignment NPD
• Erin Morrissey, NP

  • Family Nurse Practitioner
  • Great Neck, NY
  • NPI 1225416969
  Medicare reassignment NPD

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

{
    "created_epoch": "1164672000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1777420800000",
    "number": "1669548087",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2200 NORTHERN BLVD STE 133",
            "city": "GREENVALE",
            "state": "NY",
            "postal_code": "115481226",
            "telephone_number": "516-352-8100",
            "fax_number": "516-352-7348"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2200 NORTHERN BLVD",
            "address_2": "SUITE 133",
            "city": "GREENVALE",
            "state": "NY",
            "postal_code": "115481219",
            "telephone_number": "516-352-8100",
            "fax_number": "516-352-7348"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ADVANCED INTERNAL MEDICINE GROUP PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-11-28",
        "last_updated": "2026-04-29",
        "certification_date": "2026-04-29",
        "status": "A",
        "authorized_official_last_name": "SCHWECHTER",
        "authorized_official_first_name": "LEON",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "516-352-8100",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "138681",
            "primary": true
        },
        {
            "code": "207RG0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Geriatric Medicine",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LEON SCHWECHER NPI #",
            "identifier": "1225078314",
            "state": "NY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "JAVIER MORALES NPI #",
            "identifier": "1508806712",
            "state": "NY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GROUP MEDICARE PROVIDER #",
            "identifier": "W87631",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Vincent Jerome Abbatiello, DMD
• Ahmad Latefi DO PLLC
• Onat Akin, MD
• Adesola Anuoluwapo Akinyemi, MD, MPH
• Bryant Alarcon
• Daniela Alayev, FNP

• Internal Medicine Physician in Greenvale, NY
• Providers in Greenvale, NY by specialty
• Internal Medicine Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.