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PRESTON AVERY SPARKS M.D.
NPI 1497286215
Internal Medicine in Chattanooga, TN

Active since March 23, 2017PECOS EnrolledAccepts Medicare Assignment
94.7/100
CMS Quality Rating
2525 DESALES AVE, CHATTANOOGA, TN 37404(423) 495-7404(423) 495-2625 Get Directions Write a Review

NPPES record last updated: June 27, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 17, 2021, Mar 23, 2017 (2 updates tracked since 2017).

About Preston Avery Sparks M.d. NPPES

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

PRESTON AVERY SPARKS M.D. (NPI 1497286215) is an individual internal medicine provider in Chattanooga, Tennessee, licensed in Tennessee (67883) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, is affiliated with Memorial Healthcare System, Inc, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1497286215
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NamePRESTON AVERY SPARKSCredential: M.D.
Location Address2525 DESALES AVEChattanooga, TN 37404-1161
Mailing Address1949 Gunbarrel Rd Ste 206Chattanooga, TN 37421-7133 · (423) 495-4349 · Fax (423) 495-4934
Phone(423) 495-7404
Fax(423) 495-2625
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 23, 2017
Last NPPES UpdateJune 27, 20232 updates tracked since enumeration
NPPES CertifiedJune 27, 2023
✔ NPI 1497286215 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TN · 67883
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 67883 (TN)
2525 DESALES AVE, Chattanooga, TN 37404
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Preston Avery Sparks M.d. 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 ID345513859
PECOS Enrollment IDI20230713000749
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Preston Sparks reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Memorial Health Partners Foundation, Inc
3.3 mi
Internal Medicine
5600 BRAINERD RD, SUITE 500
Chattanooga, TN 37411
  • Reassigned Medicare billing, Tennessee enrollment
  • 570 clinicians in this Medicare group
NPI 1922053545 (423) 495-6870
24 On Physicians Of Sc, LLC
343 mi
Hospitalist
316 CALHOUN ST
Charleston, SC 29401
  • Reassigned Medicare billing, South Carolina enrollment
  • 281 clinicians in this Medicare group
NPI 1144877655 (800) 923-2247

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.
280 services143 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.
108 services67 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.
105 services105 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.
38 services38 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
13 services12 patients

Hospital Affiliations CMS Care Compare

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

Memorial Healthcare System, Inc

Acute Care Hospitals · Chattanooga, TN
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number440091
Location2525 Desales AveChattanooga, TN 37404 · Hamilton County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37404 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.

94.7/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality89.41
Promoting Interoperability100
Improvement Activities40

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by Teri ***** November 18, 2025

5/5
I was admitted to Memorial Northgate in October and Dr. Sparks was my hospital doctor. He was so good, so helpful, answered every question, took time with me so that I understood everything and it was the best experience I have ever had in a hospital. I would recommend him to anyone! Teri Marshall
Provider 5/5 Office Staff 5/5
Visited this provider? Share your experience.

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.

DR. COURTNEY ELIZABETH PEARSON PHARMD, MPH, BCPS
Pharmacist
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 495-8380
THOMAS R RIMER M.D.
Radiology (Diagnostic Radiology)
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 495-4430
MR. GLEN ROLAND HORNE CRNA
Nurse Anesthetist, Certified Registered
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 206-5040
EUN HYEA GODBOLD CRNA
Nurse Anesthetist, Certified Registered
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 495-2525
KAREN JIPPING APRN
Nurse Practitioner (Family)
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 493-6401
SADIE ANNE ENGELKEN ACSM-CEP
Clinical Exercise Physiologist
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 495-7422
JAIME RENA BAILEY MD
Family Medicine
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 495-7404
CHRISTOPHER L REYNOLDS AGACNP-BC
Nurse Practitioner (Acute Care)
2525 DESALES AVE
CHATTANOOGA, TN 37404
Hamilton County (423) 495-7404

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 Preston Sparks's NPI number?

The NPI number for Preston Sparks is 1497286215. It was assigned to this individual provider in the NPPES registry on March 23, 2017.

Where is Preston Sparks located?

Preston Sparks practices at 2525 Desales Ave, Chattanooga, TN 37404. The listed phone number is (423) 495-7404.

What is Preston Sparks's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Preston Sparks enrolled in Medicare?

Yes. Preston Sparks 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.

Which organizations bill Medicare for Preston Sparks's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Preston Sparks reassigns Medicare benefits to 2 organizations: Memorial Health Partners Foundation, Inc (Chattanooga, TN) and 24 On Physicians Of Sc, LLC (Charleston, SC). Each 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 Preston Sparks's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Preston Sparks accept?

Health plans from Alliant Health Plans, Inc. list Preston Sparks as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Preston Sparks affiliated with any hospitals?

According to CMS data, Preston Sparks is affiliated with Memorial Healthcare System, Inc.

When was this NPI record last updated?

The NPPES record for Preston Sparks was last updated on June 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.