Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

NATHANIEL ROBERT ELLENS MD
NPI 1265939524
Neurological Surgery in Knoxville, TN

Active since April 12, 2018PECOS EnrolledAccepts Medicare Assignment
1932 ALCOA HWY STE 360, KNOXVILLE, TN 37920(865) 524-1869 Get Directions Write a Review

NPPES record last updated: September 9, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 9, 2026, Jul 13, 2026, Nov 17, 2025 and 1 more (4 updates tracked since 2018).

About Nathaniel Robert Ellens Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NATHANIEL ROBERT ELLENS MD (NPI 1265939524) is an individual neurological surgery provider in Knoxville, Tennessee, licensed in Tennessee (76528) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with Lehigh Valley Hospital, and is a graduate of Michigan State University College Of Human Medicine (2018).

NPPES Registry Identity

NPI1265939524
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameNATHANIEL ROBERT ELLENSCredential: MD
Location Address1932 ALCOA HWY STE 360Knoxville, TN 37920-1509
Mailing Address1932 Alcoa Hwy Ste 360Knoxville, TN 37920-1509 · (865) 524-1869
Sole ProprietorNo
Medical School CMSMichigan State University College Of Human MedicineGraduated 2018
Enumeration DateApril 12, 2018
Last NPPES UpdateSeptember 9, 20264 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2026
✔ NPI 1265939524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
License✔ Licensed in TN · 76528
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.
1932 ALCOA HWY STE 360, Knoxville, TN 37920

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nathaniel Robert Ellens Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8820341555
PECOS Enrollment IDI20251201001953
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Lehigh Valley Hospital

Acute Care Hospitals · Allentown, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390133
Location1200 South Cedar Crest BoulevardAllentown, PA 18103 · Lehigh County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37920 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Physician Assistant (Surgical)
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920
Neurological Surgery
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920
Neurological Surgery
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920
Neurological Surgery
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920
Neurological Surgery
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920
Physician Assistant (Surgical)
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920
Physician Assistant
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920
Neurological Surgery
1932 ALCOA HWY STE 360
KNOXVILLE, TN 37920

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 Nathaniel Ellens's NPI number?

The NPI number for Nathaniel Ellens is 1265939524. It was assigned to this individual provider in the NPPES registry on April 12, 2018.

Where is Nathaniel Ellens located?

Nathaniel Ellens practices at 1932 Alcoa Hwy Ste 360, Knoxville, TN 37920. The listed phone number is (865) 524-1869.

What is Nathaniel Ellens's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Nathaniel Ellens enrolled in Medicare?

Yes. Nathaniel Ellens is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Nathaniel Ellens affiliated with any hospitals?

According to CMS data, Nathaniel Ellens is affiliated with Lehigh Valley Hospital.

When was this NPI record last updated?

The NPPES record for Nathaniel Ellens was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days 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.