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

Dr. Mark Lewis Vandewalker, MD

Individual provider Allergy Physician · NPI 1386833358

Dr. Mark Lewis Vandewalker, MD is an Allergy/Immunology in Columbia, Missouri. Graduated from Washington University School of Medicine in 1974, 52 years ago. Practices with Psf PLLC, a 99-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
52
Trained at
Washington University School of Medicine
Licensed in
MO
In the registry since
2007
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

601 W Nifong Blvd Ste 2B
Columbia, MO 65203-6804
Phone: (573) 446-7000
Fax: (573) 445-1000
Show map & directions

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

Specialties & licences

Allergy Physician (primary) Taxonomy 207KA0200X · Licence R2F17 (MO)

Record details

NPI number1386833358
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 16, 2007
Last updated in NPPESOctober 16, 2007

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1974 (52 years in practice)
Group practice Psf Pllc — 99 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Columbia