Matthew Nathan, DO

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

OP61558014 Issued in WA

Practice address

6520 226TH PL SE Ste 100
Issaquah, WA 98027-7365

Phone

(425) 394-1680

Fax

(425) 394-1674

NPI assigned

Apr 18, 2020

Last updated

Aug 28, 2026By the provider in NPPES

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

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in WA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/3889/brand/1/csg/1/fhir/r4
• Direct secure messaging: mnathan368705@direct.ochin.org
• Direct secure messaging: mnathan88983@direct.tecmc.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Optum Care Washington PLLC

  • Multi-Specialty Clinic/Center
  • Everett, WA
  • NPI 1831186766

  Pediatrics

  Medicare reassignment NPD
• The Polyclinic PLLC

  dba Optum - Broadway

  • Audiologist
  • Seattle, WA
  • NPI 1174594634

  Pediatrics

  Medicare reassignment NPD
• Optum Care Washington PLLC

  • Durable Medical Equipment & Medical Supplies
  • Marysville, WA
  • NPI 1194428425

  Pediatrics

  NPD
• The Polyclinic

  • Ambulatory Surgical Clinic/Center
  • Seattle, WA
  • NPI 1073944039
  NPD
• The Polyclinic PLLC

  dba Optum Tacoma

  • Durable Medical Equipment & Medical Supplies
  • Tacoma, WA
  • NPI 1831411487
  NPD

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

{
    "created_epoch": "1587168000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787875200000",
    "number": "1598385601",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 25608",
            "city": "SALT LAKE CITY",
            "state": "UT",
            "postal_code": "841250608",
            "telephone_number": "206-320-4476"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6520 226TH PL SE STE 100",
            "city": "ISSAQUAH",
            "state": "WA",
            "postal_code": "980277365",
            "telephone_number": "425-394-1680",
            "fax_number": "425-394-1674"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NATHAN",
        "first_name": "MATTHEW",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-18",
        "last_updated": "2026-08-28",
        "certification_date": "2026-08-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "WA",
            "license": "OP61558014",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2295903",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Yea Katie Nam, DDS
• Antony Wolf Narciso
• Emily Nardiello, PA-C
• Sasidhar R Narra, MDS, BDS
• Rory Nash
• Ryan James Nathe, M.D.
• Tyler J Nathe, MD
• Kit Nau, SLP
• Camilo Ismael Navarro
• Jacqueline Marie Neel, AUD

• Pediatrics Physician in Issaquah, WA
• Providers in Issaquah, WA by specialty
• Pediatrics Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 28, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.