Rex Chang Manayan, M.D.

Primary specialty

Vascular Surgery PhysicianTaxonomy code 2086S0129X

License

67209 Issued in AZ

Practice address

3333 Concours Ste 100
Ontario, CA 91764-4875

Phone

(909) 481-3242

Fax

(909) 481-3243

NPI assigned

Jul 13, 2005

Reactivated

Aug 8, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in AZ, 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

General Surgery

Education

Tufts University School of Medicine, 1991

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Arizona Uvc Medical PLLCGroup PAC ID 3375973647, 12 clinicians

Empire Vein and Vascular SpecialistsGroup PAC ID 1951732759, 6 clinicians

Practice addresses (Care Compare)

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: rex.manayan@uvvc.eclinicaldirectplus.com

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.

• Empire Vein & Vascular Specialists

  • Vascular Surgery Physician
  • Rancho Mirage, CA
  • NPI 1821415142
  Medicare reassignment Care Compare group NPD
• Arizona Uvc Medical PLLC

  • Vascular Surgery Physician
  • Phoenix, AZ
  • NPI 1548800980
  Medicare reassignment Care Compare group NPD
• USA Vein Clinics of Utah LLC

  • Vascular Surgery Physician
  • Ogden, UT
  • NPI 1225640717
  NPD
• Colorado Medical Group, PLLC

  • Vascular Surgery Physician
  • Englewood, CO
  • NPI 1053928234
  NPD (past)

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

{
    "created_epoch": "1121212800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762992000000",
    "number": "1649278599",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "71780 SAN JACINTO DR BLDG I",
            "city": "RANCHO MIRAGE",
            "state": "CA",
            "postal_code": "922705516",
            "telephone_number": "760-568-3461",
            "fax_number": "760-423-6273"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3333 CONCOURS STE 100",
            "city": "ONTARIO",
            "state": "CA",
            "postal_code": "917644875",
            "telephone_number": "909-481-3242",
            "fax_number": "909-481-3243"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MANAYAN",
        "first_name": "REX",
        "middle_name": "CHANG",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-13",
        "last_updated": "2025-11-13",
        "certification_date": "2025-11-13",
        "deactivation_date": "2006-03-17",
        "reactivation_date": "2006-08-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "G86289",
            "primary": false
        },
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "CO",
            "license": "DR.0059259",
            "primary": false
        },
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "AZ",
            "license": "67209",
            "primary": true
        },
        {
            "code": "202K00000X",
            "taxonomy_group": "",
            "desc": "Phlebology",
            "state": "AZ",
            "license": "67209",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "154997",
            "state": "AZ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Malo Motivating Action Leadership Opportunity
• Darionna Malone
• Dashanay Malone
• Nichole Maloy
• Megan Mamarimbing, BA
• Rosio Mancera, B.A.
• Ricardo Mancia
• Karina Lizeth Mancillas Sandoval
• Evelyn Mancillas-Estrada
• Kailen Mangu

• Vascular Surgery Physician in Ontario, CA
• Providers in Ontario, CA by specialty
• Vascular Surgery Physician in California

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