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

Maryellen Estevez Pfeiffer, DO

Individual provider Hospitalist Physician · NPI 1609076165

Maryellen Estevez Pfeiffer, DO is a Hospitalist Physician in York, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2007.

Licensed in
PA
In the registry since
2007
Specialties on file
2
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

1001 S George St 3rd Fl
York, PA 17403-3676
Phone: (717) 851-4005
Fax: (717) 812-2495
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence OS013949 (PA)
Hospitalist Physician Taxonomy 208M00000X · Licence OS013949 (PA)

Record details

NPI number1609076165
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 23, 2007
Last updated in NPPESFebruary 3, 2020
Certification dateFebruary 3, 2020

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