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Internal Medicine

Sub Specialty:
Sleep Disorders
Critical Care

Hospital Affiliation(s):
UPMC Passavant

Patient Satisfaction Ratings:
5 Stars
35 Patient
Satisfaction Ratings
Learn About Our Survey


Pulmonary Partners - UPMC
3 St. Francis Way
Suite 206
Cranberry Twp., PA 16066
Office Phone:
(724) 742-1600

9104 Babcock Blvd.
Suite 2103
Pittsburgh, PA 15237
Office Phone:
(412) 748-5020


Critical Care Medicine, American Board of Internal Medicine
Pulmonary Disease, American Board of Internal Medicine
Sleep Medicine, American Board of Sleep Medicine


MD, West Virginia University School of Medicine , Morgantown, WV

Ohio State University - College of Medicine,
Columbus, OH

University of Pittsburgh School of Medicine,
Pittsburgh, PA

University of Pittsburgh School of Medicine,
Pittsburgh, PA

Appointment Information

New Patients

Appointment Information

Call 1-800-533-UPMC (8762), Monday through Friday between 7 a.m. and 7 p.m. to schedule an appointment OR call the locations listed above to speak with a representative.

Returning Patients

  • Your doctor may participate in scheduling through MyUPMC. If you would like to book online, please log in and visit the Appointments tab.
  • Call the locations listed above to speak with a representative.

Patient Ratings

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Listens Carefully

Spends Enough Time with You

Recommend This Provider to Family/Friends

Shows Respect for Patients

Provides Easy to Understand Information

Explains in a Way You Understand

Patient Comments

At UPMC we believe transparency is critical. Patient comments found on UPMC Find A Doc are not investigated to ascertain truth or validity. Comments are posted in the spirit of providing patient's perceptions of their encounters with their providers.

Patient comments are gathered from our Press Ganey Patient Satisfaction Survey and are displayed in their entirety. Patients are not identified for confidentiality and patient privacy.

August 14, 2019

My appointment witn Dr. Niggemeyer was a very good experience.

June 13, 2019


June 05, 2019

This was my first visit with Dr Niggemyer. I was extremely pleased with him. Great personality on top of in-depth knowledge is a perfect combination!

June 05, 2019

Dr Niggemyer is a kind, excellent doctor. That's why I travel to see him.

May 24, 2019

Dr. Keith N. listened to all my concerns and was very thorough in his review of my medical records. He even reminded of a sleep study I had done in 2009, for which I had forgotten the date. He was excellent in finding a solution that met me financially where I need to be and yet addresses my pulmonary issue. I would VERY highly recommend him to others.

May 22, 2019

excellent and through patient care

March 21, 2019

Dr. Niggemyer was very professional and explained all options for my treatment.

February 15, 2019


February 13, 2019

The office staff were funny & quick & helpful. I really like the Dr. that Dr. Griffen picked for me to see.

January 11, 2019

I had an excellent and friendly experience first with the respiratory therapist and then with Dr. Niggemyer.