Professional Sleep Diagnostics, Inc

Primary specialty

Sleep Disorder Diagnostic Clinic/CenterTaxonomy code 261QS1200X

Legal business name

PROFESSIONAL SLEEP DIAGNOSTICS, INC

Practice address

536 Old Howell Rd
Greenville, SC 29615-1969

Phone

(917) 803-3470

Fax

(336) 217-0802

NPI assigned

Sep 21, 2006

Organization subpart

No

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

Authorized official

Name

Steve Feldman

Title

President

Phone

(917) 803-3470

Specialties & licenses 1

Addresses

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

{
    "created_epoch": "1158796800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1781740800000",
    "number": "1033217997",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "536 OLD HOWELL RD",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296151969",
            "telephone_number": "917-803-3470",
            "fax_number": "336-217-0802"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "536 OLD HOWELL RD",
            "city": "GREENVILLE",
            "state": "SC",
            "postal_code": "296151969",
            "telephone_number": "917-803-3470",
            "fax_number": "336-217-0802"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "PROFESSIONAL SLEEP DIAGNOSTICS, INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-09-21",
        "last_updated": "2026-06-18",
        "certification_date": "2026-06-18",
        "status": "A",
        "authorized_official_last_name": "FELDMAN",
        "authorized_official_first_name": "STEVE",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "917-803-3470"
    },
    "taxonomies": [
        {
            "code": "261QS1200X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Sleep Disorder Diagnostic",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Letty Probasco, MD
• Ronne Justine Proch, DO
• Kate Prochaska
• Professional Health SVC
• Professional Med Transport Services
• Progressive Physical Therapy, PA
• Progrin Dental of Augusta Road LLC
• Progrin Dental of Five Forks, LLC
• Timea Prokopecz, MT
• Mary Prokopowicz

• Sleep Disorder Diagnostic Clinic/Center in Greenville, SC
• Providers in Greenville, SC by specialty
• Sleep Disorder Diagnostic Clinic/Center in South Carolina

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.