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

Dr. Karl A Sillay, MD

Individual provider Neurological Surgery Physician · NPI 1184734030

Dr. Karl A Sillay, MD is a Neurosurgery in Nashville, Tennessee. Graduated from Medical College of Georgia School of Medicine in 1999, 27 years ago. Practices with Cotton-O'Neil Clinic Revocable Trust, a 658-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Colorado, Indiana, Kansas and Tennessee and 1 more.

Years since qualifying
27
Trained at
Medical College of Georgia School of Medicine
Licensed in
CO, IN, KS, TN, WI
In the registry since
2006
Specialties on file
5
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

2400 Patterson St Ste 319
Nashville, TN 37203-1566
Phone: (615) 986-1256
Fax: (615) 383-0853
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 11750 W 2nd Pl Ste 255, Lakewood, CO 80228-1726 — (720) 638-7500
  • 1500 Sw 10th Ave, Topeka, KS 66604-1301 — (785) 354-6000
  • 2660 Sw 3rd St, Topeka, KS 66606-2442 — (785) 368-0767

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence 49526 (TN)
Neurological Surgery Physician Taxonomy 207T00000X · Licence 04-50374 (KS)
Neurological Surgery Physician Taxonomy 207T00000X · Licence DR.0072838 (CO)
Neurological Surgery Physician Taxonomy 207T00000X · Licence 50316 (WI)
Neurological Surgery Physician Taxonomy 207T00000X · Licence 01093445A (IN)

Record details

NPI number1184734030
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESMay 4, 2026
Certification dateMay 4, 2026

Medicare enrollment

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

Medicare specialtyNEUROSURGERY
Medical schoolMEDICAL COLLEGE OF GEORGIA SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Cotton-O'Neil Clinic Revocable Trust — 658 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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