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

William Daniel Seibert, DO

Individual provider Family Medicine Physician · NPI 1588620272

William Daniel Seibert, DO is a Family Medicine Physician in Littlestown, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2006.

Licensed in
PA
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

340 Lumber St
Littlestown, PA 17340-1668
Phone: (717) 359-1331
Fax: (717) 359-1337
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence OS004409L (PA)

Record details

NPI number1588620272
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 22, 2006
Last updated in NPPESAugust 20, 2010
Mailing address340 Lumber St, Littlestown, PA 17340-1668

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