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

DR. SAMUEL SPEARS LITTLEJOHN MD
NPI 1205399409
Pediatrics - Pediatric Cardiology in Knoxville, TN

Q: What is Samuel Littlejohn's NPI number?

The NPI number for Samuel Littlejohn is 1205399409. It was assigned to this individual provider in the NPPES registry on April 13, 2019.

Q: What is Samuel Littlejohn's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Q: When was this NPI record last updated?

The NPPES record for Samuel Littlejohn was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.

Active since April 13, 2019PECOS Enrolled

2018 CLINCH AVENUE SOUTH TOWER SECOND FLOOR, KNOXVILLE, TN 37916(865) 522-0420(877) 801-6771 Get Directions Write a Review

NPPES record last updated: September 1, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 1, 2026, Jun 7, 2022, Apr 13, 2019 (3 updates tracked since 2019).

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About Dr. Samuel Spears Littlejohn Md NPPES

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

DR. SAMUEL SPEARS LITTLEJOHN MD (NPI 1205399409) is an individual pediatric cardiology provider in Knoxville, Tennessee, licensed in Tennessee (77191) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1205399409

Entity TypeIndividualMale

Primary Taxonomy2080P0202X

Provider Legal NameDR. SAMUEL SPEARS LITTLEJOHNCredential: MD

Location Address2018 CLINCH AVENUE SOUTH TOWER SECOND FLOORKnoxville, TN 37916

Mailing AddressPo Box 50068Knoxville, TN 37950-0068 · (865) 541-8895 · Fax (865) 633-4808

Phone(865) 522-0420

Fax(877) 801-6771

Sole ProprietorNo

Enumeration DateApril 13, 2019

Last NPPES UpdateSeptember 1, 20263 updates tracked since enumeration

NPPES CertifiedSeptember 1, 2026

✔ NPI 1205399409 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0202X

License✔ Licensed in TN · 77191

Definition

A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.

2018 CLINCH AVENUE SOUTH TOWER SECOND FLOOR, Knoxville, TN 37916

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Other Identifiers 1

MedicaidQ049667TN

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Samuel Spears Littlejohn Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Other Providers at the Same Location NPPES 3

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

DR. YVONNE A BREMER MD

Pediatrics (Pediatric Cardiology)

2018 CLINCH AVENUE SOUTH TOWER SECOND FLOOR
KNOXVILLE, TN 37916

Knox County (865) 522-0420

DBA: DOLLY PARTON CHILDREN'S HOSPITAL CARDIOLOGY

Pediatrics (Pediatric Cardiology)

2018 CLINCH AVENUE SOUTH TOWER SECOND FLOOR
KNOXVILLE, TN 37916

Knox County (865) 522-0420

EAST TENNESSEE CHILDREN'S HOSPITAL ASSOCIATION, INC.

Pediatrics (Pediatric Endocrinology)

2018 CLINCH AVENUE SOUTH TOWER SECOND FLOOR
KNOXVILLE, TN 37916

Knox County (865) 971-7400

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 Samuel Littlejohn's NPI number?

The NPI number for Samuel Littlejohn is 1205399409. It was assigned to this individual provider in the NPPES registry on April 13, 2019.

Where is Samuel Littlejohn located?

Samuel Littlejohn practices at 2018 Clinch Avenue South Tower Second Floor, Knoxville, TN 37916. The listed phone number is (865) 522-0420.

What is Samuel Littlejohn's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Samuel Littlejohn enrolled in Medicare?

Yes. Samuel Littlejohn is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Samuel Littlejohn was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.