Individual provider Active NPI

Nathaniel Duncan Geron, PA-C

  • Physician Assistant
  • Houston, TX
National Provider Identifier
1942688684
Registry record updated Jun 6, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
PA09725 Issued in TX
Practice address
3899 Southwest Fwy
Houston, TX 77027-7515
Phone
(832) 323-9230
NPI assigned
May 14, 2015
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 6, 2022

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Physician Assistant 363AM0700X PA09725 TX
Surgical Physician Assistant 363AS0400X PA09725 TX
Physician Assistant 363A00000X PA09725 TX Primary

Addresses

Primary practice location

3899 Southwest Fwy
Houston, TX 77027-7515

Mailing address

3899 Southwest Fwy
Houston, TX 77027-7515
Phone (832) 323-9230

Other identifiers 2

IdentifierTypeStateIssuer
PA09725OtherTXSTATE LICENSE
455224YV3COtherTXMEDICARE P-TAN USP

Other names 1

  • Duncan Geron Professional name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
PA09725TXMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Sienna Practitioners PLLC Surgical Past Accepting new patients
Aco Jason Martin Medical Consulting PastSince Aug 3, 2025 Accepting new patients

Interoperability endpoints

  • Direct secure messaging: ngeron13750@direct.uth.org

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1431561600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1654473600000",
    "number": "1942688684",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3899 SOUTHWEST FWY",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770277515",
            "telephone_number": "832-323-9230"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3899 SOUTHWEST FWY",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770277515",
            "telephone_number": "832-323-9230"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GERON",
        "first_name": "NATHANIEL",
        "middle_name": "DUNCAN",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-05-14",
        "last_updated": "2022-06-06",
        "certification_date": "2022-05-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "TX",
            "license": "PA09725",
            "primary": false
        },
        {
            "code": "363AS0400X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Surgical",
            "state": "TX",
            "license": "PA09725",
            "primary": false
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "TX",
            "license": "PA09725",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE LICENSE",
            "identifier": "PA09725",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE P-TAN USP",
            "identifier": "455224YV3C",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "DUNCAN",
            "last_name": "GERON",
            "credential": "PA-C",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

Other providers in Houston, TX

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 6, 2022; 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.