AVERA NEUROSURGERY - DANIEL G. TYNAN, M.D.
NPI 1649461369
Neurological Surgery in Sioux Falls, SD
About Avera Neurosurgery - Daniel G. Tynan, M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AVERA NEUROSURGERY - DANIEL G. TYNAN, M.D. (NPI 1649461369) is a healthcare organization registered as a neurological surgery in Sioux Falls, South Dakota and active in the NPI registry since August 2007. The organization lists Julie N Norton, Senior Vp Of Finance, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 6
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Avera Neurosurgery - Daniel G. Tynan, M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
1,275Medicare enrollment records show 1,275 clinicians reassign Medicare billing to Avera Neurosurgery - Daniel G. Tynan, M.D., which bills Medicare for the services they deliver. Of these, 66 practice at this address and 762 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 59
Nearest to this location (20)
See all 1,275Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Avera Mckennan's NPI number?
The NPI number for Avera Mckennan is 1649461369. It was assigned to this organization in the NPPES registry on August 7, 2007. The provider is doing business as Avera Neurosurgery - Daniel G. Tynan, M.D..
Where is Avera Mckennan located?
Avera Mckennan is located at 1100 E 21st St Ste 600, Sioux Falls, SD 57105. The listed phone number is (605) 322-4800.
What is Avera Mckennan's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Avera Mckennan enrolled in Medicare?
Yes. Avera Mckennan is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Avera Mckennan?
According to the CMS Revalidation Reassignment List (October 2026 release), 1,275 clinicians in 59 Medicare specialties reassign their Medicare billing to Avera Mckennan. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (268), Certified Registered Nurse Anesthetist (CRNA) (115) and Internal Medicine (108). Of these, 66 practice at this address and 762 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Avera Mckennan was last updated on March 30, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.