Ryan Wai Hoong Masaichi Nakamura, MD

Primary specialty

Student in an Organized Health Care Education/Training ProgramTaxonomy code 390200000X

Practice address

2315 Stockton Blvd
Sacramento, CA 95817-2201

Phone

(916) 734-2680

NPI assigned

Mar 25, 2026

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

Practice roles

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.

• Primary Care Plus LLC

  • Family Medicine Physician
  • Aiea, HI
  • NPI 1982270831
  NPD
• Psychiatric Associates

  • Psychiatry Physician
  • Aiea, HI
  • NPI 1740857101
  NPD
• The Moses Group, LLC

  • Family Medicine Physician
  • Aiea, HI
  • NPI 1396203295
  NPD

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

{
    "created_epoch": "1774396800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774396800000",
    "number": "1497694533",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2315 STOCKTON BLVD",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958172201",
            "telephone_number": "916-734-2680"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2315 STOCKTON BLVD",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958172201",
            "telephone_number": "916-734-2680"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NAKAMURA",
        "first_name": "RYAN",
        "middle_name": "WAI HOONG MASAICHI",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-03-25",
        "last_updated": "2026-03-25",
        "certification_date": "2026-03-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "CA",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Laura M Nakagawa, LCSW
• Calvin A Nakamoto, PHARM.D.
• Marvin S. Nakamoto, O.D.
• Phillip Nakamura
• Ryan S Nakamura, O.D.
• David Hayashi Nakano, MD
• Stacey A. Nakano, MD
• Steven Nakano, MD
• Gloria Neng Nakaoka, PHARMD
• Jason Wah Sun Nakaoka, PHARM D

• Student in an Organized Health Care Education/Training Program in Sacramento, CA
• Providers in Sacramento, CA by specialty
• Student in an Organized Health Care Education/Training Program in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.