AVERA NEUROSURGERY - DANIEL G. TYNAN, M.D.
NPI 1649461369
Neurological Surgery in Sioux Falls, SD

Active since August 07, 2007
1100 E 21ST ST, STE 600, SIOUX FALLS, SD 57105(605) 322-4800(605) 322-4801 Get Directions Write a Review

NPPES record last updated: March 30, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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

NPI1649461369
Entity TypeOrganization
Primary Taxonomy207T00000X
Legal Business NameAVERA MCKENNAN
Location Address1100 E 21ST ST, STE 600Sioux Falls, SD 57105-1020
Mailing AddressPo Box 86370Sioux Falls, SD 57118-6370 · (605) 322-7510 · Fax (605) 322-6475
Fax(605) 322-4801
Organization SubpartNo
Authorized OfficialJulie N NortonSenior Vp Of Finance · (605) 322-6375
Enumeration DateAugust 7, 2007
Last NPPES UpdateMarch 30, 2010
✔ NPI 1649461369 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
License✔ Licensed in SD · 4653
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
1100 E 21ST ST, Sioux Falls, SD 57105

Other Names 1

Doing Business AsAvera Neurosurgery - Daniel G. Tynan, M.d.

Other Identifiers 6

Other9251035SD · Dakotacare
Medicare UPINF29008SD
Medicaid10025595900NE
Medicare PINS102122SD
Other4992604SD · Blue Cross/sd
Other6I362AVMN · Blue Plus

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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

1,275

Medicare 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

Nurse Practitioner268
Certified Registered Nurse Anesthetist (CRNA)115
Internal Medicine108
Family Practice107
Pediatric Medicine74
Physical Therapist in Private Practice67
Emergency Medicine49
Obstetrics/Gynecology45
51 other specialties442

Nearest to this location (20)

See all 1,275
Nurse Practitioner
NPI 1003269176
1301 S CLIFF AVE SUITE 610
Sioux Falls, SD 57105
(605) 322-8860
✔ PECOS✔ Accepts MedicareSame address
Neurology
NPI 1760001838
1301 S CLIFF AVE STE 610
Sioux Falls, SD 57105
(605) 504-0141
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1528069598
1301 S CLIFF AVE STE 400
Sioux Falls, SD 57105
(605) 322-5750
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1336759612
1301 S CLIFF AVE STE 400
Sioux Falls, SD 57105
(605) 322-5750
✔ PECOS✔ Accepts MedicareSame address
Pulmonary Disease
NPI 1093245912
1301 S CLIFF AVE STE 601
Sioux Falls, SD 57105
(605) 322-6930
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1306312848
1301 S CLIFF AVE STE 506
Sioux Falls, SD 57105
(605) 335-0844
✔ PECOS✔ Accepts MedicareSame address
Neurosurgery
NPI 1346482890
1301 S. CLIFF AVE. STE. 610
Sioux Falls, SD 57105
(605) 322-8860
✔ PECOS✔ Accepts MedicareSame address
Physical Medicine and Rehabilitation
NPI 1992169759
1301 S CLIFF AVE STE 401
Sioux Falls, SD 57105
(605) 322-7300
✔ PECOS✔ Accepts MedicareSame address
Pain Management
NPI 1245611755
1301 S CLIFF AVE STE 401
Sioux Falls, SD 57105
(605) 322-7300
✔ PECOS✔ Accepts MedicareSame address
Pulmonary Disease
NPI 1285667949
1301 S CLIFF AVE STE 601
Sioux Falls, SD 57105
(605) 322-6930
✔ PECOS✔ Accepts MedicareSame address
Pulmonary Disease
NPI 1700197498
1301 S CLIFF AVE STE 601
Sioux Falls, SD 57105
(605) 322-6930
✔ PECOS✔ Accepts MedicareSame address
Neurology
NPI 1003177338
1301 S CLIFF AVE STE 610
Sioux Falls, SD 57105
(605) 322-8860
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1639597693
1301 S CLIFF AVE STE 400
Sioux Falls, SD 57105
(056) 322-5765
✔ PECOS✔ Accepts MedicareSame address
Neurology
NPI 1538402037
1301 S CLIFF AVE STE 506
Sioux Falls, SD 57105
(605) 335-0844
✔ PECOS✔ Accepts MedicareSame address
Neurosurgery
NPI 1821021304
1301 S. CLIFF AVE STE 610
Sioux Falls, SD 57105
(605) 322-8860
✔ PECOS✔ Accepts MedicareSame address
Physical Medicine and Rehabilitation
NPI 1720054091
1301 S. CLIFF AVE STE 401
Sioux Falls, SD 57105
(605) 322-7300
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1518320928
1301 S CLIFF AVE STE 400
Sioux Falls, SD 57105
(605) 322-5750
✔ PECOS✔ Accepts MedicareSame address
Physical Therapist in Private Practice
NPI 1487802641
1100 E 21ST ST STE 402
Sioux Falls, SD 57105
(605) 322-5080
✔ Accepts MedicareSame address
Family Practice
NPI 1689785529
1115 E 20TH ST
Sioux Falls, SD 57105
(605) 339-1783
✔ PECOS✔ Accepts MedicareSame address
Emergency Medicine
NPI 1740487172
1325 S CLIFF AVE AVERA MCKENNAN HOSPITAL
Sioux Falls, SD 57117
(605) 322-2000
✔ PECOSSame address
See all 1,275 clinicians

Source: 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.