Organization Active NPI

Gwynn R Patterson MD PLLC

  • Obstetrics & Gynecology Physician
  • Sierra Vista, AZ
National Provider Identifier
1013129923
Registry record updated Feb 19, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
Legal business name
GWYNN R PATTERSON MD PLLC
Practice address
4990 E Mediterranean Dr Ste C
Sierra Vista, AZ 85635-2495
Phone
(520) 417-2229
Fax
(520) 417-2226
NPI assigned
May 4, 2007
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Feb 19, 2026

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

Authorized official

Name
Gwynn R Patterson, MDNPI 1134111941
Title
Physician
Phone
(520) 417-2229

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207V00000X Primary

Addresses

Primary practice location

4990 E Mediterranean Dr Ste C
Sierra Vista, AZ 85635-2495

Mailing address

4990 E Mediterranean Dr Ste C
Sierra Vista, AZ 85635-2495
Phone (520) 417-2229

Other identifiers 1

IdentifierTypeStateIssuer
270348002MedicaidAZ

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in AZ

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040506001715 AZ Part B Supplier - Clinic/Group Practice 3173512092 Receives reassigned benefits from 1 practitioner
Practice locations: Sierra Vista, AZ

National Provider Directory

National Provider Directory

Locations

4990 E Mediterranean Dr
Ste C
Sierra Vista, AZ 85635
Phone (520) 417-2229

155 El Camino Real
Ste A
Sierra Vista, AZ 85635
Phone (520) 249-7944

Practitioners & affiliated clinicians

Practitioners 1

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

NPI Registry JSON

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

{
    "created_epoch": "1178236800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1771459200000",
    "number": "1013129923",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4990 E MEDITERRANEAN DR STE C",
            "city": "SIERRA VISTA",
            "state": "AZ",
            "postal_code": "856352495",
            "telephone_number": "520-417-2229",
            "fax_number": "520-417-2226"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4990 E MEDITERRANEAN DR STE C",
            "city": "SIERRA VISTA",
            "state": "AZ",
            "postal_code": "856352495",
            "telephone_number": "520-417-2229",
            "fax_number": "520-417-2226"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GWYNN R PATTERSON MD PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-05-04",
        "last_updated": "2026-02-19",
        "certification_date": "2026-02-19",
        "status": "A",
        "authorized_official_last_name": "PATTERSON",
        "authorized_official_first_name": "GWYNN",
        "authorized_official_middle_name": "R",
        "authorized_official_title_or_position": "PHYSICIAN",
        "authorized_official_telephone_number": "520-417-2229",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Obstetrics & Gynecology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "270348002",
            "state": "AZ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Sierra Vista, AZ

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 19, 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.