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

Dr. Gregory A Ruff, MD

Individual provider Pulmonary Disease Physician · NPI 1548249642

Dr. Gregory A Ruff, MD is a Pulmonary Disease in State College, Pennsylvania. Graduated from Pennsylvania State University College of Medicine in 1993, 33 years ago. Practices with Mount Nittany Medical Center Health Services Inc, a 367-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
33
Trained at
Pennsylvania State University College of Medicine
Licensed in
PA
In the registry since
2006
Specialties on file
3
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

1850 E Park Ave Ste 201
State College, PA 16803-6706
Phone: (844) 278-4600
Fax: (814) 466-7489
Show map & directions

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

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence MD467806 (PA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence MD467806 (PA)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence MD467806 (PA)

Record details

NPI number1548249642
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 17, 2006
Last updated in NPPESJuly 12, 2019
Mailing address1850 E Park Ave Ste 201, State College, PA 16803-6706

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), SLEEP MEDICINE
Medical schoolPENNSYLVANIA STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Mount Nittany Medical Center Health Services Inc — 367 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

Other providers in State College