Ronald J Gaskin, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

R4346 Issued in MO

Practice address

3535 S Jefferson Ave
#201
Saint Louis, MO 63118-3930

Phone

(314) 577-5778

Fax

(314) 577-5726

NPI assigned

Sep 23, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Rectal Diagnostics & Treatment Center

  • Colon & Rectal Surgery Physician
  • Saint Louis, MO
  • NPI 1295869824
  NPD (past)

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

{
    "created_epoch": "1127433600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1982690004",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1209",
            "city": "MARYLAND HEIGHTS",
            "state": "MO",
            "postal_code": "630430209",
            "telephone_number": "314-576-7213",
            "fax_number": "314-576-4755"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3535 S JEFFERSON AVE",
            "address_2": "#201",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631183930",
            "telephone_number": "314-577-5778",
            "fax_number": "314-577-5726"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GASKIN",
        "first_name": "RONALD",
        "middle_name": "J",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-23",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MO",
            "license": "R4346",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Gillian Teresa Alonzo Gascon, DO
• Debra L Gase, FNP
• Ben M Gasirowski, MD
• Lori L Gaskell, PT
• Brenda J Gaskin
• Leilani Leigh Gaspar Flynn, RN
• Ricardo Gaspar Loureiro Filho, MD
• Lindsey Ellen Gaspar, PA
• Grant Gaspard, DC, ATC
• Marlah Gaspard

• Surgery Physician in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Surgery Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.