Andrew Ryan Devendorf is a Psychologist practicing in Seattle, Washington. The National Provider Identifier (NPI) is #1841133295, which was assigned on April 10, 2026, and the registration record was last updated on April 10, 2026. The practitioner's main practice location is at 4801 Rainier Ave S, Seattle, WA 98118-2181; the contact telephone number is 8479462786. The primary taxonomy of Andrew Ryan Devendorf is Psychologist (103T00000X). Andrew Ryan Devendorf is licensed to practice in the state of Washington (#PSYC.PY.61670611).
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
| NPI | 1841133295 |
| Entity Type | Individual |
| Provider Name | DR. ANDREW RYAN DEVENDORF |
| Gender | Male |
| Credential | PHD |
| Practice Address |
4801 Rainier Ave S Seattle WA 98118-2181 |
| Practice Telephone | 8479462786 |
| Mailing Address |
4801 Rainier Ave S Seattle WA 98118-2181 |
| Mailing Telephone | 8479462786 |
| Certification Date | 2026-04-10 |
| Enumeration Date | 2026-04-10 |
| Last Update Date | 2026-04-10 |
| Is Sole Proprietor | Y |
| Primary | Code | Classification | Specialization | Taxonomy Group | License Number | License State |
|---|---|---|---|---|---|---|
| Y | 103T00000X | Psychologist | PSYC.PY.61670611 | WA |
| Code | 103T00000X |
| Taxonomy | Psychologist |
| Classification | Psychologist |
| Grouping | Behavioral Health & Social Service Providers |
| Definition: A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public. |
| Notes: Source: American Psychological Association [1/1/2007: modified definition] |
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| Street Address |
4801 RAINIER AVE S |
| City | SEATTLE |
| State | WA |
| Zip Code | 98118-2181 |
| Country | US |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Randall Mccambridge Harper | 4801 Rainier Ave S Apt 302, Seattle, WA 98118-2188 | Health & Wellness Coach | 2026-01-23 |
| Stephanie Landdeck | 4801 Rainier Ave S Apt 326, Seattle, WA 98118-2189 | Clinical Social Worker | 2025-11-14 |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Dora Ellen Simmons | 4712 South Adams, Seattle, WA 98118 | Marriage & Family Therapist | 2007-07-30 |
| Vina Clinic Inc. | 7101 Martin Luther King Jr. Way S., 216, Seattle, WA 98118 | Dentist | 2006-10-04 |
| Robert Cook | 4400 37th Ave S, Seattle, WA 98118-1609 | Family Medicine Physician | 2015-03-30 |
| Longs Drug Stores California Inc | 3820 Rainier Ave S, Seattle, WA 98118-1159 | Pharmacy | 2006-06-14 |
| Letitia Salazar Monk | 4400 37th Ave S, Seattle, WA 98118-1609 | Advanced Practice Midwife | 2020-03-04 |
| Jong Hwan Kim | 3820 S Ferdinand St Ste 201a, Seattle, WA 98118-1703 | Chiropractor | 2025-12-31 |
| Hummingbird Indigenous Family Services | 3712 S Ferdinand St, Seattle, WA 98118-1736 | Doula | 2025-10-30 |
| Neighborcare Health | 4400 37th Ave S, Seattle, WA 98118-1609 | Federally Qualified Health Center (FQHC) | 2006-07-04 |
| Christina Lee Stewart · Christy Stewart | 3948 S Ferdinand St, Seattle, WA 98118-1740 | Psychologist | 2013-10-09 |
| Xuan Ho | 4201 Letitia Ave S, Seattle, WA 98118-1344 | Marriage & Family Therapist | 2019-09-25 |
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This dataset includes over five million health care providers who are assigned National Provider Identifier (NPI) in the National Plan and Provider Enumeration System (NPPES), developed by the Centers for Medicare & Medicaid Services (CMS). Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under Health Insurance Portability and Accountability Act (HIPAA). Each provider is registered with the NPI, full name, status, address, taxonomy, other identifiers, etc.
| Subject | Transparency and Disclosure |
| Jurisdiction | Federal |
| Data Provider | National Plan and Provider Enumeration System (NPPES), by the Centers for Medicare & Medicaid Services (CMS) |
| Source | download.cms.gov |
The National Provider Identifier (NPI) is a Health Insurance Portability and Accountability Act (HIPAA) Administrative Simplification Standard. The NPI is a unique identification number for covered health care providers and all health plans and health care clearinghouses, who must use the NPIs in the administrative and financial transactions adopted under HIPAA. The NPI is a 10-position, intelligence-free numeric identifier (10-digit number). All health care providers who are HIPAA-covered entities, whether individuals or organizations, must get an NPI. A HIPAA-covered entity is a health care provider that conducts certain transactions in electronic form, or a health care clearinghouse, or a health plan (including commercial plans, Medicare, and Medicaid). Centers for Medicare & Medicaid Services (CMS) has developed the National Plan and Provider Enumeration System (NPPES) to assign unique identifiers to health care providers. The National Provider Indentifier (NPI) has been the standard identifier for all HIPAA-covered entities (health care providers) since May 23, 2007. Small health plans were required to obtain and use an NPI by May 23, 2008. This dataset includes over five million health care providers (individuals and organizations) who are assigned NPI. The provider data elements are disclosed to the public by the Centers for Medicare & Medicaid Services (CMS) under the Freedom of Information Act (FOIA), as listed in the NPPES Data Dissemination Notice (CMS-6060-N). The NPI final rules define the following elements which required to be disclosed as determined by Department of Health & Human Services (HHS): NPI, Entity Type, Provider Name, Credential, Business Mailing Address, Business Location Address, Healthcare Provider Taxonomy Code, Other Provider Identifier, Provider Enumeration Date, NPI Deactivation Date, Provider License Number, Authorized Official Name and Contact Information. |