SAMUEL GRAY WALKER DO
NPI 1144727579
Hospitalist in Knoxville, TN

Active since April 11, 2018PECOS EnrolledAccepts Medicare Assignment
95.69/100
CMS Quality Rating
1924 ALCOA HWY # U56, KNOXVILLE, TN 37920(865) 305-9081(865) 305-8769 Get Directions Write a Review

NPPES record last updated: July 15, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 15, 2021, Apr 11, 2018 (2 updates tracked since 2018).

About Samuel Gray Walker Do NPPES

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

SAMUEL GRAY WALKER DO (NPI 1144727579) is an individual hospitalist provider in Knoxville, Tennessee, licensed in Tennessee (4139) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with University Health System, Inc, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1144727579
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameSAMUEL GRAY WALKERCredential: DO
Location Address1924 ALCOA HWY # U56Knoxville, TN 37920-1511
Mailing AddressPo Box 415000-msc8135Nashville, TN 37241-8135 · (865) 670-6199 · Fax (865) 670-6198
Fax(865) 305-8769
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateApril 11, 2018
Last NPPES UpdateJuly 15, 20212 updates tracked since enumeration
NPPES CertifiedJuly 15, 2021
NPI 1144727579 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License Licensed in TN · 4139
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
1924 ALCOA HWY # U56, 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

Samuel Gray Walker Do 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 ID5890046163
PECOS Enrollment IDI20210827003015
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.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
238 services107 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
112 services51 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
75 services75 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
36 services36 patients
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180
This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.
14 services14 patients

Hospital Affiliations CMS Care Compare

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

University Health System, Inc

Acute Care Hospitals · Knoxville, TN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number440015
Location1924 Alcoa HighwayKnoxville, TN 37920 · Knox 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
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

95.69/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality85.28
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
3 suppliers48 claims83 services$10.01 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers48 claims48 services$87.11 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Nurse Practitioner (Acute Care)
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Nurse Practitioner (Acute Care)
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Nurse Practitioner (Acute Care)
1924 ALCOA HWY # U56
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 Samuel Walker's NPI number?

The NPI number for Samuel Walker is 1144727579. It was assigned to this individual provider in the NPPES registry on April 11, 2018.

Where is Samuel Walker located?

Samuel Walker practices at 1924 Alcoa Hwy # U56, Knoxville, TN 37920. The listed phone number is (865) 305-9081.

What is Samuel Walker's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Samuel Walker enrolled in Medicare?

Yes. Samuel Walker 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 Samuel Walker affiliated with any hospitals?

According to CMS data, Samuel Walker is affiliated with University Health System, Inc.

When was this NPI record last updated?

The NPPES record for Samuel Walker was last updated on July 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.