Mark Michael Chung, MD

Primary specialty

Sleep Medicine (Internal Medicine) PhysicianTaxonomy code 207RS0012X

License

G52290 Issued in CA

Practice address

11821 South St
Cerritos, CA 90703-6825

Phone

(562) 991-5679

Fax

(562) 991-5681

NPI assigned

Aug 8, 2006

Sex

Male

Sole proprietor

Yes

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 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

Pulmonary DiseaseAlso: Critical Care (Intensivists), Internal Medicine

Education

Other, 1982

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: mark.chung.p1@direct.sleep.nextgenshare.com

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

{
    "created_epoch": "1154995200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787788800000",
    "number": "1740290378",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 5279",
            "city": "LOS ALAMITOS",
            "state": "CA",
            "postal_code": "907215279",
            "telephone_number": "562-598-1002",
            "fax_number": "562-799-0115"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11821 SOUTH ST",
            "city": "CERRITOS",
            "state": "CA",
            "postal_code": "907036825",
            "telephone_number": "562-991-5679",
            "fax_number": "562-991-5681"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHUNG",
        "first_name": "MARK",
        "middle_name": "MICHAEL",
        "name_prefix": "Mr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-08-08",
        "last_updated": "2026-08-27",
        "certification_date": "2026-08-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "G52290",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G52290",
            "primary": false
        },
        {
            "code": "207RS0012X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sleep Medicine",
            "state": "CA",
            "license": "G52290",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Desiree Chu
• Ji Yeun Chu, L.AC
• Hee Young Chun, L.AC. D.A.O.M.
• Christina Yonsun Chung, LCSW
• Hanna Chung, LICENSED MFT
• Matchy Chyan
• Andrea Cid
• Marianna Cid
• Debra Cifuentes-Hernandez
• Citadel Anesthesia Inc.

• Sleep Medicine (Internal Medicine) Physician in Cerritos, CA
• Providers in Cerritos, CA by specialty
• Sleep Medicine (Internal Medicine) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 27, 2026; 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.