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

Individual provider Neurological Surgery Physician · NPI 1225028012

Allen K Sills Jr., MD practises Neurosurgery in Nashville, Tennessee. Graduated from Johns Hopkins University School of Medicine in 1990, 36 years ago. Practices with Vanderbilt University Medical Center, a 3,466-clinician group and accepts Medicare assignment. Licensed in Tennessee.

Years since qualifying
36
Trained at
Johns Hopkins University School of Medicine
Licensed in
TN
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3601 Tvc
Nashville, TN 37232-0001
Phone: (615) 322-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence MD29608 (TN)

Record details

NPI number1225028012
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 24, 2005
Last updated in NPPESMarch 24, 2022
Certification dateMarch 24, 2022

Medicare enrollment

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

Medicare specialtyNEUROSURGERY
Medical schoolJOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Vanderbilt University Medical Center — 3466 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients17
Services billed 21 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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 Vanderbilt University Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3466 clinicians in the practice; 12 are shown here.

Other providers in Nashville