Marshall Leigh Spears, M.D.
Internal Medicine Physician · Chattanooga, TN
Marshall Leigh Spears, M.D. is an internal medicine physician with a practice address in Chattanooga, Tennessee, and NPI 1386904514, issued on May 22, 2012. Check the license (Tennessee 56294, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Marshall Leigh Spears
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 56294 TN
Self-reported in NPPES; status is on the state search - Practice location
- 975 E 3RD St, Chattanooga, TN 37403
- Phone
- (423) 778-7000
- Enumerated
- May 22, 2012
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20171108002125); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Also registered at 975 E 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edwin Abraham, MDAnesthesiology Physician1346469673
- Ndurache Adaba, CRNACertified Registered Nurse Anesthetist1669858056
- Jonathan AdamsRegistered Nurse1093525669
- Kimberly Adkins, PAPhysician Assistant1972600393
- Anthony Aird, M.D.Internal Medicine Physician1457513517
- Sachin Amin, M.D.Hospitalist Physician1154766764
Verify Marshall Leigh Spears in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 56294Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
207 Medicare Part D claims for 100 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Eliquis13 claims
- Pantoprazole Sodium12 claims
- Prednisone11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 96.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $21.75
1 payment: food and beverage; the largest payer was Ucb, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Erlanger HealthChattanooga, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marshall Leigh Spears among 2,596 internal medicine physician records in Tennessee
Marshall Leigh Spears, M.D. is one of 2,596 internal medicine physician records with a practice address in Tennessee. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 72% of them.
- NPI issued2012 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2012 · median 2003 among the 1,705 with a school on file
- Record last updated2022 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
192 internal medicine physician records list a practice address in Chattanooga
They are 192 of the 7,377 NPPES records with a practice address in Chattanooga, and 2,596 internal medicine physician records in Tennessee.
All 2,596 in Tennessee → Every provider in Chattanooga → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Alberta, M.D.Chattanooga, TN 374031922037258
- David Alvarez, MDChattanooga, TN 374031871578385
- Allison Cannon, M.D.Chattanooga, TN 374031437134517
- Norman Desbiens, MDChattanooga, TN 374031326029604
- Peter Deversa, MDChattanooga, TN 374031598773871
- Monica Gefter, MDChattanooga, TN 374031700879533
- John Hammond, MDChattanooga, TN 374031538100698
- Roger Jones, MDChattanooga, TN 374031710971312
Common questions
What is Marshall Leigh Spears, M.D.'s NPI number?
Marshall Leigh Spears, M.D.'s National Provider Identifier (NPI) is 1386904514, issued on May 22, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Leigh Spears, M.D. located?
The NPPES record lists a practice address at 975 E 3RD St, Chattanooga, TN, 37403. Phone: (423) 778-7000. Providers update this record themselves, so call before visiting.
How can I verify Marshall Leigh Spears, M.D.'s license?
NPPES lists Tennessee license number 56294, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marshall Leigh Spears, M.D. prescribe under Medicare Part D?
In 2024, Marshall Leigh Spears, M.D. had 207 Medicare Part D claims for 100 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Marshall Leigh Spears, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.