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

Mark Fegley, MD

Individual provider Critical Care Medicine (Anesthesiology) Physician · NPI 1881075596

Mark Fegley, MD is an Anesthesiology in Bethlehem, Pennsylvania. Graduated from Temple University School of Medicine in 2015, 11 years ago. Practices with Gslpg, Inc, a 267-clinician group and accepts Medicare assignment. Licensed in New Jersey and Pennsylvania.

Years since qualifying
11
Trained at
Temple University School of Medicine
Licensed in
NJ, PA
In the registry since
2015
Specialties on file
4
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

801 Ostrum St
Bethlehem, PA 18015-1000
Phone: (866) 785-8537
Show map & directions

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

Specialties & licences

Critical Care Medicine (Anesthesiology) Physician (primary) Taxonomy 207LC0200X · Licence MD467603 (PA)
Critical Care Medicine (Anesthesiology) Physician Taxonomy 207LC0200X · Licence 25MA10835800 (NJ)
Anesthesiology Physician Taxonomy 207L00000X · Licence MD467603 (PA)
Anesthesiology Physician Taxonomy 207L00000X · Licence 25MA10835800 (NJ)

Record details

NPI number1881075596
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 18, 2015
Last updated in NPPESJanuary 9, 2026
Certification dateJanuary 9, 2026
Mailing addressPo Box 500, Souderton, PA 18964-0500

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Gslpg, Inc — 267 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Bethlehem