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

Samuel Gray Walker, DO

Individual provider Hospitalist Physician · NPI 1144727579

Samuel Gray Walker, DO is a Hospitalist in Knoxville, Tennessee. Qualified in 2018, 8 years ago. Practices with University Health System, Inc, a 529-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
8
Licensed in
TN
In the registry since
2018
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1924 Alcoa Hwy # U56
Knoxville, TN 37920-1511
Phone: (865) 305-9081
Fax: (865) 305-8769
Show map & directions

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

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 4139 (TN)

Record details

NPI number1144727579
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 11, 2018
Last updated in NPPESJuly 15, 2021
Certification dateJuly 15, 2021

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice University Health System, Inc. — 529 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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