Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Donald F Slack III, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1790005981

Dr. Donald F Slack III, MD is registered under Critical Care (Intensivists) in Towson, Maryland. Graduated from University of Maryland School of Medicine in 2010, 16 years ago. Practices with Greater Baltimore Medical Center Inc, a 348-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
16
Trained at
University of Maryland School of Medicine
Licensed in
MD
In the registry since
2010
Specialties on file
2
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

6565 N Charles St Ppe Ste 441
Towson, MD 21204
Phone: (443) 849-3901
Fax: (443) 849-3902
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 D0080447 (MD)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence D0080447 (MD)

Record details

NPI number1790005981
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2010
Last updated in NPPESJune 20, 2018

Medicare enrollment

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

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Also practisesPULMONARY DISEASE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Greater Baltimore Medical Center Inc — 348 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients238
Services billed 485 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Greater Baltimore Medical Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 348 clinicians in the practice; 12 are shown here.

Other providers in Towson