Progressive Hematology and Oncology PLLC

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

242242 Issued in NY

Legal business name

PROGRESSIVE HEMATOLOGY AND ONCOLOGY PLLC

Practice address

6201 15TH Ave Ste 306
Brooklyn, NY 11219-5411

Phone

(718) 775-2700

NPI assigned

Nov 6, 2012

Organization subpart

No

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

Authorized official

Name

Mark Sonnenschine, DONPI 1922291939

Title

Chairman

Phone

(718) 283-4232

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

Enrollment records 1

Locations

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Mark Sonnenschine, D.O.

  • Hematology & Oncology Physician
  • Brooklyn, NY
  • NPI 1922291939
  Medicare reassignment NPD Authorized official
• Anish Yogesh Desai, MD

  • Internal Medicine Physician
  • Manhasset, NY
  • NPI 1104321140
  NPD (past)
• Chaya Rachel Sonnenschine, LCSW

  • Clinical Social Worker
  • Brooklyn, NY
  • NPI 1598077067
  NPD (past)

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

{
    "created_epoch": "1352160000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1786579200000",
    "number": "1114271673",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6201 15TH AVE STE 306",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112195411",
            "telephone_number": "718-775-2700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6201 15TH AVE STE 306",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112195411",
            "telephone_number": "718-775-2700"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6201 15th Ave Ste 306",
            "address_purpose": "LOCATION",
            "city": "Brooklyn",
            "state": "NY",
            "postal_code": "112195411",
            "country_code": "US",
            "telephone_number": "718-775-2700",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "235 W 135th St Ste 103",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100302861",
            "country_code": "US",
            "telephone_number": "718-775-2700",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "PROGRESSIVE HEMATOLOGY AND ONCOLOGY PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2012-11-06",
        "last_updated": "2026-08-13",
        "certification_date": "2026-08-13",
        "status": "A",
        "authorized_official_last_name": "SONNENSCHINE",
        "authorized_official_first_name": "MARK",
        "authorized_official_title_or_position": "CHAIRMAN",
        "authorized_official_telephone_number": "718-283-4232",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "NY",
            "license": "242242",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Progress Up ABA LLC
• Progressive Community Adult Day Care Services, Inc.
• Progressive Community Center for Children and Families Inc
• Progressive Community Center for Children and Families, Inc
• Progressive Healthcare Medicine PC
• Progressive Medical Solutions PC
• Progressive Occupational Therapy PC
• Progressive Orthopedic PLLC
• Progressive Podiatry, PLLC
• Progressive Podiatry, PLLC

• Hematology & Oncology Physician in Brooklyn, NY
• Providers in Brooklyn, NY by specialty
• Hematology & Oncology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.