Tri-Valley Physicians

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

Legal business name

TRI-VALLEY PHYSICIANS

Practice address

5575 W Las Positas Blvd
#130
Pleasanton, CA 94588

Phone

(925) 463-0590

Fax

(925) 463-0708

NPI assigned

Oct 17, 2006

Last updated

Sep 11, 2025By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

John W Yee, MDNPI 1497755466

Title

President

Phone

(925) 463-0590

Specialties & licenses 2

Addresses

Locations

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• John Wai-Ying Yee, MD

  • Pulmonary Disease Physician
  • Pleasanton, CA
  • NPI 1497755466
  Authorized official Same address or phone
• Nikhil M Apte, MD

  • Internal Medicine Physician
  • Pleasanton, CA
  • NPI 1972552206
  NPD (past)
• Stanley NG, MD

  • Internal Medicine Physician
  • Pleasanton, CA
  • NPI 1942200548
  NPD (past)

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

{
    "created_epoch": "1161043200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1215017629",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5575 W LAS POSITAS BLVD",
            "address_2": "#130",
            "city": "PLEASANTON",
            "state": "CA",
            "postal_code": "94588",
            "telephone_number": "925-463-0590",
            "fax_number": "925-463-0708"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5575 W LAS POSITAS BLVD",
            "address_2": "#130",
            "city": "PLEASANTON",
            "state": "CA",
            "postal_code": "94588",
            "telephone_number": "925-463-0590",
            "fax_number": "925-463-0708"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "TRI-VALLEY PHYSICIANS",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-10-17",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "YEE",
        "authorized_official_first_name": "JOHN",
        "authorized_official_middle_name": "W",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "925-463-0590",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tri-Valley Ecg Medical Group Inc
• Tri-Valley Orthopedic and Sports Medical Group Inc (Tri-Valley Orthopedic Specialists Inc)
• Tri-Valley Orthopedic Specialists, Inc
• Tri-Valley Pediatrics, Inc.
• Tri-Valley Pharmacy Corporation (Stoneridge Professional Pharmacy)
• Tri-Valley Psychological Services, PC
• Tri-Valley Surgery Center, L.P. (HEALTHSOUTH Tri-Valley Surgery Center)
• Triage Home Health LLC
• Alysia Vanessa Trillo
• Trivalley Outpatient Surgery Center

• Internal Medicine Physician in Pleasanton, CA
• Providers in Pleasanton, 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 Sep 11, 2025; 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.