Individual provider Active NPI

Mark Douglas Harwood, M.D.

  • Clinical Cardiac Electrophysiology Physician
  • Spokane, WA
National Provider Identifier
1356559975
Registry record updated Mar 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Cardiac Electrophysiology PhysicianTaxonomy code 207RC0001X
License
MD60284972 Issued in WA
Practice address
62 W 7TH Ave Ste 450
Spokane, WA 99204-2321
Phone
(509) 455-8820
Fax
(509) 838-4978
NPI assigned
May 18, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 20, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Cardiac Electrophysiology Physician 207RC0001X MD60284972 WA Primary
Cardiovascular Disease Physician 207RC0000X MD60284972 WA
Internal Medicine Physician 207R00000X 6053858-1205 UT

Addresses

Primary practice location

62 W 7TH Ave Ste 450
Spokane, WA 99204-2321

Mailing address

PO Box 31001-4114
Pasadena, CA 91110-0001
Phone (866) 747-2455

Other practice location 1

122 W. 7th Avenue
Ste. 450
Spokane, WA 99204-2352
Phone (509) 455-8820

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address mharwood221826@wm.providencedirect.org Direct

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
I20120911000540 WA Practitioner - Cardiac ElectrophysiologyPractitioner - Cardiovascular Disease (Cardiology) 0042468332 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Cardiac ElectrophysiologyAlso: Cardiovascular Disease (Cardiology)
Education
Other, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Providence Health and Services WashingtonGroup PAC ID 8729258256, 53 clinicians

Practice addresses (Care Compare)

825 SE Bishop Blvd
Suite 140
Pullman, WA 99163-5517
Phone (509) 455-8820

Hospital & facility affiliations

  • Prov Sacred HRT Med Ctr & Childs Hosp. Hospital, Spokane, WA, CCN 500054
  • Providence Holy Family Hospital Hospital, Spokane, WA, CCN 500077
  • Providence Mount Carmel Hospital Hospital, Colville, WA, CCN 501326
  • Newport Community Hospital Hospital, Newport, WA, CCN 501310
  • Kadlec Regional Medical Center Hospital, Richland, WA, CCN 500058

Procedures performed for Medicare patients

ProcedureNumber of procedures
Pacemaker insertion or repair68

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
6053858-1205UTMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Tri-State Memorial Hospital CurrentSince Jan 1, 2026 Accepting new patients
Providence Health & Services - Wa Past Accepting new patients
Tri-State Memorial Hospital Internal Medicine Past Accepting new patients

Locations

1221 Highland Ave
Clarkston, WA 99403
Phone (509) 751-0312

Organizations & group practices 4

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 5

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": "1179446400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773964800000",
    "number": "1356559975",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 31001-4114",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911100001",
            "telephone_number": "866-747-2455"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "62 W 7TH AVE STE 450",
            "city": "SPOKANE",
            "state": "WA",
            "postal_code": "992042321",
            "telephone_number": "509-455-8820",
            "fax_number": "509-838-4978"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "122 W. 7th Avenue",
            "address_2": "Ste. 450",
            "address_purpose": "LOCATION",
            "city": "Spokane",
            "state": "WA",
            "postal_code": "992042352",
            "country_code": "US",
            "telephone_number": "509-455-8820",
            "fax_number": "509-838-4978",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HARWOOD",
        "first_name": "MARK",
        "middle_name": "DOUGLAS",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-05-18",
        "last_updated": "2026-03-20",
        "certification_date": "2026-03-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "WA",
            "license": "MD60284972",
            "primary": true
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "WA",
            "license": "MD60284972",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "UT",
            "license": "6053858-1205",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mharwood221826@wm.providencedirect.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "62 W 7th Ave Ste 450",
            "city": "Spokane",
            "state": "WA",
            "country_code": "US",
            "postal_code": "992042321",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Spokane, WA

Sources for this page

Verify at the official NPI Registry.