Jonathan D Ou MD Inc

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A113176 Issued in CA

Legal business name

JONATHAN D OU MD INC

Practice address

5562 Philadelphia St Ste 311
Chino, CA 91710-2499

Phone

(909) 465-6342

Fax

(855) 830-1723

NPI assigned

Apr 17, 2013

Organization subpart

No

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

Authorized official

Name

Jonathan David Ou, M.DNPI 1518109719

Title

President

Phone

(909) 465-6342

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

Practitioners 3

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

• Jonathan D Ou, M.D

  • Internal Medicine Physician
  • Chino, CA
  • NPI 1518109719
  Medicare reassignment NPD Authorized official
• Sarom Pyun, M.D.

  • Family Medicine Physician
  • Diamond Bar, CA
  • NPI 1104264472
  Medicare reassignment NPD
• Manuel C Rivera, M.D.

  • Family Medicine Physician
  • Chino Hills, CA
  • NPI 1831126655
  NPD (past)

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

{
    "created_epoch": "1366156800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787011200000",
    "number": "1497199772",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5562 PHILADELPHIA ST STE 311",
            "city": "CHINO",
            "state": "CA",
            "postal_code": "917102499",
            "telephone_number": "909-465-6342",
            "fax_number": "855-830-1723"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5562 PHILADELPHIA ST STE 311",
            "city": "CHINO",
            "state": "CA",
            "postal_code": "917102499",
            "telephone_number": "909-465-6342",
            "fax_number": "855-830-1723"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2707 S Diamond Bar Blvd",
            "address_2": "Suite 104",
            "address_purpose": "LOCATION",
            "city": "Diamond Bar",
            "state": "CA",
            "postal_code": "917653500",
            "country_code": "US",
            "telephone_number": "909-594-8331",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "JONATHAN D OU MD INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2013-04-17",
        "last_updated": "2026-08-18",
        "certification_date": "2026-08-18",
        "status": "A",
        "authorized_official_last_name": "OU",
        "authorized_official_first_name": "JONATHAN",
        "authorized_official_middle_name": "DAVID",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "909-465-6342",
        "authorized_official_credential": "M.D"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A113176",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A113176",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Internal Medicine Physician in Chino, CA
• Providers in Chino, 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 Aug 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.