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

Dr. Mark Allan Walker, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1083716823

Dr. Mark Allan Walker, MD is an Endocrinology, Diabetes & Metabolism Physician in Halethorpe, Maryland. Licensed in District of Columbia, Maryland and Virginia. Registered with an NPI since 2006.

Licensed in
DC, MD, VA
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

1701 Twin Springs Rd Kaiser Permanente South Baltimore County Medical Ctr
Halethorpe, MD 21227-3553
Phone: (410) 737-5540
Fax: (410) 737-5531
Show map & directions

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

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence D0037239 (MD)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence 0101250822 (VA)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence MD039279 (DC)

Record details

NPI number1083716823
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 2, 2006
Last updated in NPPESOctober 29, 2013
Mailing address2101 E Jefferson St, Kaiser Permanente Medicare Enrollment, Rockville, MD 20852-4908