Julian Joseph Sonnenfeld, M.D.

Primary specialty

Sports Medicine (Orthopaedic Surgery) PhysicianTaxonomy code 207XX0005X

License

309553 Issued in NY

Practice address

1101 Stewart Ave
Garden City, NY 11530-4892

Phone

(516) 536-2800

NPI assigned

Apr 24, 2015

Last updated

Nov 2, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in NC, NY2 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 2

Specialty

Orthopedic Surgery

Education

Tufts University School of Medicine, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

True North Medical Group PCGroup PAC ID 7012194806, 185 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• North Shore University Hospital Hospital, Manhasset, NY, CCN 330106
• St Charles Hospital Hospital, Port Jefferson, NY, CCN 330246

Merit-based Incentive Payment System (MIPS)

Final score

93.07 of 100Reported as apm

Quality

79.77

Promoting interoperability

88.77

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

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

Interoperability endpoints

• Direct secure messaging: juliansonnenfeld@nslijmedgr.allscriptsdirect.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• True North Medical Group PC

  dba Orlin & Cohen Medical Specialists Group

  • Orthopaedic Surgery Physician
  • Merrick, NY
  • NPI 1659883486
  Medicare reassignment Care Compare group NPD
• Carolinas Medical Center

  dba Atrium Health Levine Children's Gastroenterology

  • Obstetrics & Gynecology Physician
  • Charlotte, NC
  • NPI 1275774333
  Medicare reassignment NPD
• True North Medical Group PC

  dba Orlin and Cohen Medical Specialist Group

  • Oxygen Equipment & Supplies (DME)
  • Tarrytown, NY
  • NPI 1669272886

  Orthopaedic Surgery

  NPD
• Carolinas Medical Center

  dba Atrium Health Behavioral Health Primary Care

  • Family Medicine Physician
  • Charlotte, NC
  • NPI 1255775029
  NPD
• Carolinas Medical Center

  dba Atrium Health Pharmacy Kenilworth

  • Community/Retail Pharmacy
  • Charlotte, NC
  • NPI 1982710554
  NPD
• True North Medical Group PC

  • Cardiovascular Disease Physician
  • Bayside, NY
  • NPI 1669762258
  NPD (past)

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

• North Shore University Hospital

  • General Acute Care Hospital
  • Manhasset, NY
  • NPI 1366459570
  Care Compare affiliation
• St Charles Hospital Corp

  dba St. Charles Hospital

  • General Acute Care Hospital
  • Port Jefferson, NY
  • NPI 1164481529
  Care Compare affiliation

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

{
    "created_epoch": "1429833600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1793577600000",
    "number": "1700273943",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4601 PARK RD STE 300",
            "city": "CHARLOTTE",
            "state": "NC",
            "postal_code": "282092290",
            "telephone_number": "704-323-2505"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1101 STEWART AVE",
            "city": "GARDEN CITY",
            "state": "NY",
            "postal_code": "115304892",
            "telephone_number": "516-536-2800"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SONNENFELD",
        "first_name": "JULIAN",
        "middle_name": "JOSEPH",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-24",
        "last_updated": "2026-11-02",
        "certification_date": "2026-11-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NY",
            "license": "309553",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NC",
            "license": "2020-00487",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207XX0005X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Sports Medicine",
            "state": "NY",
            "license": "309553",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Susan Mary Solosky
• Bonnie Soman, D.A.
• Jenna Rose Somma, OTR/L
• Kimberly D Sommer, RPA-C
• Johnathan Song
• Joanna Sorge
• Mona Souferian, OD
• Monica Josephine Sowa, MS.ED.
• Megan Sowarby
• Philip Fortunato Spadafora, DO

• Sports Medicine (Orthopaedic Surgery) Physician in Garden City, NY
• Providers in Garden City, NY by specialty
• Sports Medicine (Orthopaedic Surgery) Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.