Melissa Ling Mao, MD

Primary specialty

Surgical Oncology PhysicianTaxonomy code 2086X0206X

License

A167735 Issued in CA

Practice address

101 The City Dr S BLDG 23
Orange, CA 92868-3201

Phone

(714) 456-8000

NPI assigned

Jul 2, 2012

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in PA, CA2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Surgical Oncology

Education

Temple University School of Medicine, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

University Surgeons of Orange a Medical GroupGroup PAC ID 6901705227, 116 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• University Surgeons of Orange a Medical Group

  • Surgery Physician
  • Orange, CA
  • NPI 1407806904
  Medicare reassignment Care Compare group NPD
• Chestnut Hill Clinic Company, LLC

  • Internal Medicine Physician
  • Philadelphia, PA
  • NPI 1508936071

  Surgery

  Medicare reassignment NPD
• Drexel University

  • Psychologist
  • Philadelphia, PA
  • NPI 1902900095
  Medicare reassignment NPD
• Chestnut Hill Clinic Company, LLC

  • Sports Medicine (Family Medicine) Physician
  • Philadelphia, PA
  • NPI 1811611692
  NPD
• Drexel University

  • Audiologist
  • Elkins Park, PA
  • NPI 1104822253
  NPD
• Drexel University

  • Nurse Practitioner
  • Philadelphia, PA
  • NPI 1790203669
  NPD
• University of California Irvine

  • Infusion Therapy Clinic/Center
  • Irvine, CA
  • NPI 1417027475
  NPD (past)
• University of California Irvine

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• University of California Irvine

  • Urgent Care Clinic/Center
  • Irvine, CA
  • NPI 1518739309

  Hospital

  Care Compare affiliation
• University of California Irvine

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  Care Compare affiliation

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

{
    "created_epoch": "1341187200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748822400000",
    "number": "1245594498",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 S MANCHESTER AVE STE 300",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683219",
            "telephone_number": "714-456-2986"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S BLDG 23",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-456-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8815 Germantown Ave Ste 22",
            "address_purpose": "LOCATION",
            "city": "Philadelphia",
            "state": "PA",
            "postal_code": "191182722",
            "country_code": "US",
            "telephone_number": "215-248-8887",
            "fax_number": "215-836-5372",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAO",
        "first_name": "MELISSA",
        "middle_name": "LING",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2012-07-02",
        "last_updated": "2025-06-02",
        "certification_date": "2025-06-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086X0206X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Oncology",
            "state": "CA",
            "license": "A167735",
            "primary": true
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "PA",
            "license": "MD465525",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "A167735",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Giovanna Sophia Manzano, MD
• Adriana Ayala Manzo
• Angelica Manzo
• Emily Isabel Manzo
• Eva Angelina Manzo
• Zhongwei Mao
• Brooklyn Genevieve Maquindang
• Nataliya Mar, MD
• Marah Cannon D.C., Inc
• Kristine Bea Maramba

• Surgical Oncology Physician in Orange, CA
• Providers in Orange, CA by specialty
• Surgical Oncology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 2, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.