Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexandra Robyn Aminoff, M.D.

Pediatrics Physician in Seattle, WA · enumerated 2008.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1558526251

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexandra Robyn Aminoff

Credential M.D.

Sex Female

Practice address 4800 Sand Point Way Ne, G-0061, Seattle, WA, 98105

Phone (206) 987-2057

Enumeration date Jul 22, 2008

Last updated in NPPES Dec 22, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License ML60019656 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alexandra Aminoff?

Alexandra Aminoff is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Eric Harvey Pharmacotherapy Pharmacist · Seattle, WA NPI 1891791448 Richard Molteni Pediatrics Physician · Seattle, WA NPI 1801893086 Leslie Walker Pediatric Adolescent Medicine Physician · Seattle, WA NPI 1205835162 Angel Rios Neonatal-Perinatal Medicine Physician · Seattle, WA NPI 1225023120 Linda Ramsdell Genetic Counselor (M.S.) · Seattle, WA NPI 1114915097 Lisa Sniderman King Genetic Counselor (M.S.) · Seattle, WA NPI 1821087321 Shannon Fitzgerald Family Nurse Practitioner · Seattle, WA NPI 1780674200 Margaret Vernon Pediatric Cardiology Physician · Seattle, WA NPI 1144202151

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-22.