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

Q: 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.

Q: What is Preston Sparks's specialty?

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

Q: 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.

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: August 16, 2026.

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

On this page

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

Open in Google Maps ↗

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, and ordering and referring status from the CMS PECOS system.

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.

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

Quality

89.41

Promoting Interoperability

100

Improvement Activities

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