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

Mark Lindenbaum, MD, PHD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1639139306

Mark Lindenbaum, MD, PHD is a Geriatric Medicine (Internal Medicine) Physician in Bellingham, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

3015 Squalicum Pkwy Ste 100
Bellingham, WA 98225-1945
Phone: (360) 715-4186
Fax: (360) 715-4143
Show map & directions

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

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence MD00025775 (WA)

Record details

NPI number1639139306
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedMarch 25, 2006
Last updated in NPPESOctober 4, 2010
Mailing addressPo Box 5096, Bellingham, WA 98227-5096

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