Tiantian Yan, LMHC

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

License

MHC.LH.70066451 Issued in WA

Practice address

17330 135TH Ave NE Ste 2B
Woodinville, WA 98072-8522

Phone

(425) 998-9769

Fax

(844) 837-1339

NPI assigned

Jul 27, 2023

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other names 1

• Betty Yan Professional name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Opted out of Medicare

Yes, effective Feb 27, 2026 through Feb 27, 2028

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

Locations

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.

• Catalyst Counseling PLLC

  • Mental Health Counselor
  • Woodinville, WA
  • NPI 1164962072
  NPD

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

{
    "created_epoch": "1690416000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771804800000",
    "number": "1235810763",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "17330 135TH AVE NE STE 2B",
            "city": "WOODINVILLE",
            "state": "WA",
            "postal_code": "980728522",
            "telephone_number": "425-998-9769",
            "fax_number": "844-837-1339"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "17330 135TH AVE NE STE 2B",
            "city": "WOODINVILLE",
            "state": "WA",
            "postal_code": "980728522",
            "telephone_number": "425-998-9769",
            "fax_number": "844-837-1339"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YAN",
        "first_name": "TIANTIAN",
        "credential": "LMHC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-07-27",
        "last_updated": "2026-02-23",
        "certification_date": "2026-02-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "WA",
            "license": "MHC.LH.70066451",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "BETTY",
            "last_name": "YAN",
            "credential": "LMHC",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• Rachel Wright, LM CPM MSM
• Tammy L Wright, LICSW
• Wu & Dowd PLLC
• Ken Duong Wu, DDS
• Sowmya Yabaluri, RPH
• Josie L Yang, O.D.
• Eric L Yarnell, N.D.
• Marilyn Yassa
• Bahareh Yazdi, LMHC
• Rebecca Jia Yin, BA

• Mental Health Counselor in Woodinville, WA
• Providers in Woodinville, WA by specialty
• Mental Health Counselor in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.