Regents of the University of Calif

Primary specialty

Gynecology PhysicianTaxonomy code 207VG0400X

Legal business name

REGENTS OF THE UNIVERSITY OF CALIF

Practice address

101 City Drive South
BLDG 56 Suite 800
Orange, CA 92868

Phone

(714) 456-6431

Fax

(714) 456-7754

NPI assigned

Apr 11, 2006

Organization subpart

No

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

Authorized official

Name

Dr. Manuel Porto, MD

Title

Dept Chairman

Phone

(714) 456-6431

Specialties & licenses 7

Addresses

Other identifiers 1

Other names 1

• Academic OB/GYN Physicians Former legal business name

Practitioners 4

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

• Afshan B Hameed, MD

  • Maternal & Fetal Medicine Physician
  • Orange, CA
  • NPI 1992885040
  NPD (past)
• Tabetha Ridgway Harken, MD, MPH

  • Obstetrics & Gynecology Physician
  • Orange, CA
  • NPI 1821100983
  NPD (past)
• Tamera Hatfield, MD, PHD

  • Maternal & Fetal Medicine Physician
  • Orange, CA
  • NPI 1033390331

  Obstetrics & Gynecology

  NPD (past)
• Karen Noblett, MD

  • Gynecology Physician
  • Orange, CA
  • NPI 1821178096
  NPD (past)

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

{
    "created_epoch": "1144713600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1073576757",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 54538",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900540538",
            "telephone_number": "714-456-6431",
            "fax_number": "714-456-7754"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 CITY DRIVE SOUTH",
            "address_2": "BLDG 56 SUITE 800",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "92868",
            "telephone_number": "714-456-6431",
            "fax_number": "714-456-7754"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "REGENTS OF THE UNIVERSITY OF CALIF",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-04-11",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "PORTO",
        "authorized_official_first_name": "MANUEL",
        "authorized_official_title_or_position": "DEPT CHAIRMAN",
        "authorized_official_telephone_number": "714-456-6431",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Obstetrics & Gynecology",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207VC0200X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Obstetrics & Gynecology, Critical Care Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207VE0102X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Obstetrics & Gynecology, Reproductive Endocrinology",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207VG0400X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Obstetrics & Gynecology, Gynecology",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207VM0101X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207VX0000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Obstetrics & Gynecology, Obstetrics",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207VX0201X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Obstetrics & Gynecology, Gynecologic Oncology",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDI-CAL",
            "identifier": "GR0041410",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Academic OB/GYN Physicians",
            "code": "4",
            "type": "Former Legal Business Name"
        }
    ]
}

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• Gynecology Physician in Orange, CA
• Providers in Orange, CA by specialty
• Gynecology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.