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

Dr. William S Zirker, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1447321807

Dr. William S Zirker, MD is a Geriatric Medicine (Internal Medicine) Physician in Crum Lynne, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2006.

Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1553 Chester Pike Ste 201
Crum Lynne, PA 19022-1022
Phone: (610) 499-7180
Fax: (610) 499-7190
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 MD071631L (PA)

Record details

NPI number1447321807
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 10, 2006
Last updated in NPPESApril 12, 2012

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