Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Leonard C. Altman, MD

Individual provider Allergy & Immunology Physician · NPI 1407892466

Dr. Leonard C. Altman, MD is an Allergy/Immunology in Seattle, Washington. Graduated from Harvard Medical School in 1969, 57 years ago. Practices with The Association of University Physicians, a 3,459-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
57
Trained at
Harvard Medical School
Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9725 3rd Ave NE Ste 500
Seattle, WA 98115-2024
Phone: (206) 527-1200
Fax: (206) 527-0535
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence MD00011606 (WA)

Record details

NPI number1407892466
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 20, 2006
Last updated in NPPESSeptember 3, 2019
Mailing address9725 3rd Ave Ne Ste 500, Seattle, WA 98115-2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1969 (57 years in practice)
Group practice The Association Of University Physicians — 3459 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations11 on file with Medicare

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