Individual provider Active NPI

Marcus Guorui Tan, MD, FAAD, FRCPC

  • MOHS-Micrographic Surgery Physician
  • Renton, WA
National Provider Identifier
1639886575
Registry record updated Oct 31, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
MOHS-Micrographic Surgery PhysicianTaxonomy code 207ND0101X
License
MD61647325 Issued in WA
Practice address
660 SW 39TH St Ste 150
Renton, WA 98057-4912
Phone
(425) 690-3483
Fax
(425) 690-9083
NPI assigned
Oct 31, 2022
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 31, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Dermatology Physician 207N00000X MD61647325 WA
Dermatology Physician 207N00000X T7371 TX
MOHS-Micrographic Surgery Physician 207ND0101X MD61647325 WA Primary

Addresses

Primary practice location

660 SW 39TH St Ste 150
Renton, WA 98057-4912

Mailing address

660 SW 39TH St Ste 150
Renton, WA 98057-4912
Phone (425) 690-3483

Other practice location 1

3411 Homer St
Dallas, TX 75206-5813
Phone (214) 663-2163

Other practice location 2

2130 W Holcombe Blvd Fl 6
Houston, TX 77030-3306
Phone (713) 563-2772

Other practice location 3

1920 N Collins Blvd
Richardson, TX 75080-3525
Phone (972) 316-4555

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20250519001473 WA Practitioner - Micrographic Dermatologic Surgery (MDS)Practitioner - Dermatology 2365810348 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Micrographic Dermatologic Surgery (MDS)Also: Dermatology
Education
Other, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Valley Medical Group-RentonGroup PAC ID 4183753965, 419 clinicians

Practice addresses (Care Compare)

660 SW 39TH St
Suite 150
Renton, WA 98057-4912
Phone (425) 690-3485

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Melanoma (skin cancer) excision119
Removal of skin lesions1-10
Removal of skin cancer451
Removal or shaving of skin growth1-10
Skin biopsy27

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
T7371TXMDDermatology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Valley Medical Group-Renton CurrentSince Jul 1, 2025 Accepting new patients
Dr Michael McGuiness, PA Dermatology CurrentSince Nov 9, 2022 Accepting new patients
Public Hospital District #1 of King County Past Accepting new patients

Locations

152 Brand
Ste 100
Murphy, TX 75094
Phone (214) 615-1735

6000 W Spring Creek Pkwy
Ste 200
Plano, TX 75024

1450 N Preston Rd
Ste 60
Prosper, TX 75078

1920 N Collins Blvd
Richardson, TX 75080
Phone (214) 575-8700

16850 SE 272nd St
Ste 100
Covington, WA 98042
Phone (253) 395-1971

660 SW 39th St
Ste 150
Renton, WA 98057
Phone (425) 690-3485

3600 Lind Ave SW
Ste 100
Renton, WA 98057

Interoperability endpoints

  • Direct secure messaging: mtan126508@direct.valleymed.org

Organizations & group practices 3

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.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1667174400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761868800000",
    "number": "1639886575",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "660 SW 39TH ST STE 150",
            "city": "RENTON",
            "state": "WA",
            "postal_code": "980574912",
            "telephone_number": "425-690-3483",
            "fax_number": "425-690-9083"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "660 SW 39TH ST STE 150",
            "city": "RENTON",
            "state": "WA",
            "postal_code": "980574912",
            "telephone_number": "425-690-3483",
            "fax_number": "425-690-9083"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3411 Homer St",
            "address_purpose": "LOCATION",
            "city": "Dallas",
            "state": "TX",
            "postal_code": "752065813",
            "country_code": "US",
            "telephone_number": "214-663-2163",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2130 W Holcombe Blvd Fl 6",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770303306",
            "country_code": "US",
            "telephone_number": "713-563-2772",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1920 N Collins Blvd",
            "address_purpose": "LOCATION",
            "city": "Richardson",
            "state": "TX",
            "postal_code": "750803525",
            "country_code": "US",
            "telephone_number": "972-316-4555",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TAN",
        "first_name": "MARCUS",
        "middle_name": "GUORUI",
        "name_prefix": "Dr.",
        "credential": "MD, FAAD, FRCPC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-10-31",
        "last_updated": "2025-10-31",
        "certification_date": "2025-10-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "WA",
            "license": "MD61647325",
            "primary": false
        },
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "TX",
            "license": "T7371",
            "primary": false
        },
        {
            "code": "207ND0101X",
            "taxonomy_group": "",
            "desc": "Dermatology, MOHS-Micrographic Surgery",
            "state": "WA",
            "license": "MD61647325",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Renton, WA

Sources for this page

Verify at the official NPI Registry.