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

Daniel D Mast, DO

Individual provider Internal Medicine Physician · NPI 1104910140

Daniel D Mast, DO is an Internal Medicine Physician in Lancaster, Pennsylvania. Works from 2 locations. Licensed in Delaware and Pennsylvania.

Licensed in
DE, PA
In the registry since
2006
Specialties on file
4
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

802 New Holland Ave Ste 200
Lancaster, PA 17602-2288
Phone: (717) 299-6371
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 700 W Lea Blvd, Wilmington, DE 19802-2546 — (302) 320-4050

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence OS-006313L (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence C2-0012667 (DE)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence OS-006313L (PA)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence C2-0012667 (DE)

Record details

NPI number1104910140
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 3, 2006
Last updated in NPPESJune 4, 2021
Certification dateJune 4, 2021
Mailing address105 Herrville Rd, Willow Street, PA 17584-8908

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