Gregory C. Marcum, MD
Emergency Medicine Physician · Kingsport, TN
Gregory C. Marcum, MD is an emergency medicine physician with a practice address in Kingsport, Tennessee, and NPI 1992749600, issued on Jun 15, 2006. Check the license (Tennessee 19016, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory C. Marcum
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 19016 TN
Self-reported in NPPES; status is on the state search - Practice location
- 130 W Ravine RD, Kingsport, TN 37660
- Phone
- (423) 224-4000
- Enumerated
- Jun 15, 2006
- Record last updated
- Jul 13, 2026
- Medicaid ID
- 3034295 TN
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,174 in Tennessee → Look up another NPI →
Also registered at 130 W Ravine RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gary Adelson, M.D.Anatomic Pathology & Clinical Pathology Physician1184600090
- Mariam Alawoki, M.D.Pulmonary Disease Physician1487017869
- Miranda AlleyFamily Nurse Practitioner1669048294
- Lindsi Anderson, PTAPhysical Therapy Assistant1649497983
- Holly Appleberry, DO, MBANeurology Physician1710410741
Verify Gregory C. Marcum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 19016Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average emergency medicine physician in 2024
168 Medicare Part D claims for 72 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Gregory C. Marcum among 1,174 emergency medicine physician records in Tennessee
Gregory C. Marcum, MD is one of 1,174 emergency medicine physician records with a practice address in Tennessee. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Tennessee
There are 1,174 emergency medicine physician records in Tennessee.
All 1,174 in Tennessee → Every provider in Kingsport → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Joshua Brintle, D.O.Kingsport, TN 376601508107590
- James Burleson, M.D.Kingsport, TN 376601053350637
- Kelly Chumbley, DOKingsport, TN 376601841243292
- Warren English, M.D.Kingsport, TN 376601609194067
- Charles Fulton, M.D.Kingsport, TN 376601912080193
- Deborah Lecraw, MDKingsport, TN 376601750498929
- Clayton McGill, MDKingsport, TN 376601871912048
- Ryan Parawan, MDKingsport, TN 376601508354069
Common questions
What is Gregory C. Marcum, MD's NPI number?
Gregory C. Marcum, MD's National Provider Identifier (NPI) is 1992749600, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory C. Marcum, MD located?
The NPPES record lists a practice address at 130 W Ravine RD, Kingsport, TN, 37660. Phone: (423) 224-4000. Providers update this record themselves, so call before visiting.
How can I verify Gregory C. Marcum, MD's license?
NPPES lists Tennessee license number 19016, 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 Gregory C. Marcum, MD prescribe under Medicare Part D?
In 2024, Gregory C. Marcum, MD had 168 Medicare Part D claims for 72 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.