Jefferson Pierce Gillum, DO
Internal Medicine Physician · Oak Ridge, TN
Jefferson Pierce Gillum, DO is an internal medicine physician with a practice address in Oak Ridge, Tennessee, and NPI 1891290656, issued on Mar 26, 2018. Check the license (Tennessee 4359, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Jefferson Pierce Gillum
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 4359 TN
0000004359 TN
Self-reported in NPPES; status is on the state search - Practice location
- 990 Oak Ridge Tpke, Oak Ridge, TN 37830
- Phone
- (865) 835-4304
- Enumerated
- Mar 26, 2018
- Record last updated
- Aug 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210825002553); accepts Medicare assignment
- Medical or professional school
- University Of Pikeville, Kentucky College Of Osteopathic Med, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Also registered at 990 Oak Ridge Tpke
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cindy Ayo, OTD, OTR/LOccupational Therapist1083778757
- Nawras Baban, M.D.Internal Medicine Physician1225075021
- Dell Bailey, CRNACertified Registered Nurse Anesthetist1316197882
- Jeff Baker, D.PH.Pharmacist1851311351
Verify Jefferson Pierce Gillum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 4359Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average internal medicine physician in 2024
724 Medicare Part D claims for 229 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Cefdinir41 claims
- Pantoprazole Sodium36 claims
- Furosemide33 claims
- Bumetanide29 claims
- Eliquis26 claims
- Metoprolol Succinate26 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.
Bills Medicare through one group practice
- Hospital Medicine Services OF Tennessee PCHarriman, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jefferson Pierce Gillum among 2,596 internal medicine physician records in Tennessee
Jefferson Pierce Gillum, DO 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 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2018 · median 2003 among the 1,705 with a school on file
- Record last updated2021 · 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).
22 internal medicine physician records list a practice address in Oak Ridge
They are 22 of the 904 NPPES records with a practice address in Oak Ridge, and 2,596 internal medicine physician records in Tennessee.
All 2,596 in Tennessee → Every provider in Oak Ridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nawras Baban, M.D.Oak Ridge, TN 378301225075021
- Helen Bidawid, M.D.Oak Ridge, TN 378301114968856
- Arnold Bridges, M.D.Oak Ridge, TN 378301831131887
- Daniel Duzan, M.D.Oak Ridge, TN 378301518900091
- Srini Eranki, M.D.Oak Ridge, TN 378301205873007
- Christopher Frost, M.D.Oak Ridge, TN 378301881635928
- James Giles, MDOak Ridge, TN 378301487681466
- Wesley Hayes, M.D.Oak Ridge, TN 378301780603084
Common questions
What is Jefferson Pierce Gillum, DO's NPI number?
Jefferson Pierce Gillum, DO's National Provider Identifier (NPI) is 1891290656, issued on Mar 26, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Jefferson Pierce Gillum, DO located?
The NPPES record lists a practice address at 990 Oak Ridge Tpke, Oak Ridge, TN, 37830. Phone: (865) 835-4304. Providers update this record themselves, so call before visiting.
How can I verify Jefferson Pierce Gillum, DO's license?
NPPES lists Tennessee license number 4359, 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 Jefferson Pierce Gillum, DO prescribe under Medicare Part D?
In 2024, Jefferson Pierce Gillum, DO had 724 Medicare Part D claims for 229 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.