Richard H. Yook, M.D, Inc.

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

G24712 Issued in CA

Legal business name

RICHARD H. YOOK, M.D, INC.

Practice address

18137 Parthenia St # a
Northridge, CA 91325-3301

Phone

(818) 993-5410

Fax

(818) 993-8300

NPI assigned

Oct 3, 2007

Organization subpart

No

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

Authorized official

Name

Dr. Chee Hian Tan, M.D.

Title

Ceo

Phone

(818) 993-5410

Specialties & licenses 1

Addresses

Other identifiers 3

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Practitioners 4

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

• Richard H Yook, M.D.

  • Ophthalmology Physician
  • Northridge, CA
  • NPI 1003838392
  Medicare reassignment Care Compare group NPD
• Chee Hian Tan, M.D., PH.D.

  • Ophthalmology Physician
  • Pasadena, CA
  • NPI 1346263357
  Medicare reassignment Care Compare group
• W Scott Calvin, M.D.

  • Ophthalmology Physician
  • Northridge, CA
  • NPI 1649212895
  NPD (past)
• Tim T Yee, O.D.

  • Optometrist
  • Northridge, CA
  • NPI 1982626800
  NPD (past)

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

{
    "created_epoch": "1191369600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1742342400000",
    "number": "1225225238",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18137 PARTHENIA ST # A",
            "city": "NORTHRIDGE",
            "state": "CA",
            "postal_code": "913253301",
            "telephone_number": "818-993-5410",
            "fax_number": "818-993-8300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18137 PARTHENIA ST # A",
            "city": "NORTHRIDGE",
            "state": "CA",
            "postal_code": "913253301",
            "telephone_number": "818-993-5410",
            "fax_number": "818-993-8300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "RICHARD H. YOOK, M.D, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-10-03",
        "last_updated": "2025-03-19",
        "certification_date": "2025-03-19",
        "status": "A",
        "authorized_official_last_name": "TAN",
        "authorized_official_first_name": "CHEE HIAN",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "818-993-5410",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "G24712",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "G24712",
            "state": "CA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE ID",
            "identifier": "G24712",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00G247120",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Doris Rezvanpour, PHARM D
• Hanna X Rhee, ACUPUNCTURE LAC
• Milena Ribeiro
• Andres Ricardo
• Sarah Rice
• Richard J. Kang, MD, Inc.
• Richard K Gordon MD Inc
• Richard Rothstein D.D.S.,Corp
• Brenda Richards, RN
• Lauren Richerson

• Ophthalmology Physician in Northridge, CA
• Providers in Northridge, CA by specialty
• Ophthalmology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.