Sullyvan W Tang, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A60959 Issued in CA

Practice address

1661 Golden Rain Rd
Seal Beach, CA 90740-4907

Phone

(562) 493-9581

Fax

(562) 795-6389

NPI assigned

Apr 24, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

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 1

Specialty

Internal Medicine

Education

Other, 1995

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Healthcare Partners Affiliates Medical GroupGroup PAC ID 7315842002, 775 clinicians

Centers for Family Medicine GPGroup PAC ID 9931143799, 87 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: stang195426@westdirect.optum.com
• Direct secure messaging: sullyvan.tang.p33@direct.monarchhealthcare.nextgenshare.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.

• Centers for Family Medicine GP

  • Family Medicine Physician
  • Los Alamitos, CA
  • NPI 1467598243

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Healthcare Partners Affiliates Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593
  Medicare reassignment Care Compare group NPD
• Family Health Centers of San Diego, Inc

  • Federally Qualified Health Center (FQHC)
  • San Diego, CA
  • NPI 1447281936
  Medicare reassignment NPD
• Family Health Centers of San Diego, Inc

  • Federally Qualified Health Center (FQHC)
  • Escondido, CA
  • NPI 1356178180
  NPD
• Family Health Centers of San Diego, Inc.

  • Federally Qualified Health Center (FQHC)
  • El Cajon, CA
  • NPI 1932561198
  NPD
• Healthcare Partners Affiliates Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• Healthcare Partners Affiliates Medical Group

  • Addiction Medicine (Internal Medicine) Physician
  • Tustin, CA
  • NPI 1891981502
  NPD
• Los Alamitos Medical Center, Inc.

  • Psychiatric Hospital Unit
  • Los Alamitos, CA
  • NPI 1497780084
  NPD (past)
• Regents of the Univ of Ca

  • Surgery Physician
  • Sacramento, CA
  • NPI 1427041698
  NPD (past)
• Memorial Medical Group Inc

  • Durable Medical Equipment & Medical Supplies
  • Phoenix, AZ
  • NPI 1255523643
  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": "1145836800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764460800000",
    "number": "1770549206",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1661 GOLDEN RAIN RD",
            "city": "SEAL BEACH",
            "state": "CA",
            "postal_code": "907404907",
            "telephone_number": "562-493-9581",
            "fax_number": "562-795-6389"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "823 Gateway Center Way",
            "address_purpose": "LOCATION",
            "city": "San Diego",
            "state": "CA",
            "postal_code": "921024541",
            "country_code": "US",
            "telephone_number": "619-515-2300",
            "fax_number": "619-906-4564",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TANG",
        "first_name": "SULLYVAN",
        "middle_name": "W",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-24",
        "last_updated": "2025-11-30",
        "certification_date": "2025-11-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A60959",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jennifer Lane Styzens, BCBA
• Mustafa I Suleiman, MD
• Lauren N Swanson, PA-C
• John Sykora
• Janice Lynn Vistro Tamayo, NP-C
• Mitchell Todd Taubman, PH.D.
• Stephen E Teipe, PA-C
• Sarah Margaret Tello, LEP
• Alan M Tenazas, PA
• Scott Tha Than, PHARMD

• Internal Medicine Physician in Seal Beach, CA
• Providers in Seal Beach, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 30, 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.