John Carter Hemphill, MD
Interventional Cardiology Physician · Chattanooga, TN
John Carter Hemphill, MD is an interventional cardiology physician with a practice address in Chattanooga, Tennessee, and NPI 1912188897, issued on Nov 19, 2007. Check the license (Tennessee 47332, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John Carter Hemphill
- Credential
- MD
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License numbers
- 47332 TN
M1137 TX
Self-reported in NPPES; status is on the state search - Practice location
- 2501 Citico Ave, Chattanooga, TN 37404
- Phone
- (423) 697-2000
- Enumerated
- Nov 19, 2007
- Record last updated
- Sep 12, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (423) 697-2118
- Medicare enrollment
- Enrolled (PECOS I20160706000246); accepts Medicare assignment
- Medical or professional school
- University Of South Carolina School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 215 in Tennessee → Look up another NPI →
Also registered at 2501 Citico Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gillian Akins, NPNurse Practitioner1427506922
- William Armstrong, MDCardiovascular Disease Physician1902225014
- Allen Atchley, M.D.Cardiovascular Disease Physician1134320476
- Deborah Ballard, NPFamily Nurse Practitioner1588879068
- Genna Barnett, APNFamily Nurse Practitioner1063736551
- Joyce Beardsley, NPNurse Practitioner1033387535
Verify John Carter Hemphill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 47332Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average interventional cardiology physician in 2024
7,854 Medicare Part D claims for 972 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Carvedilol780 claims
- Eliquis645 claims
- Amlodipine Besylate528 claims
- Rosuvastatin Calcium525 claims
- Atorvastatin Calcium511 claims
- Metoprolol Succinate435 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): 94.7 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: $8,430.82
16 payments; by number, the most common kind was food and beverage; the largest payer was Axsome Therapeutics, Inc. The 6,394 providers of this specialty with any payment received $7,062.29 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
- Memorial Health Care System Inc.Chattanooga, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Carter Hemphill among 215 interventional cardiology physician records in Tennessee
John Carter Hemphill, MD is one of 215 interventional cardiology physician records with a practice address in Tennessee. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 50% of them.
- NPI issued2007 · 50% of these records are older, 37% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated2001 · median 2001 among the 187 with a school on file
- Record last updated2019 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in Tennessee
There are 215 interventional cardiology physician records in Tennessee.
All 215 in Tennessee → Every provider in Chattanooga → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Robert Huang, MDChattanooga, TN 374041477596328
- Calvin Ledford, MDChattanooga, TN 374041033180971
- Vinay Madan, MDChattanooga, TN 374041184834251
- Aditya Mandawat, M.D.Chattanooga, TN 374041528351632
- Van Monroe, MDChattanooga, TN 374041447259742
- Brian Negus, MDChattanooga, TN 374041689673998
- Theodore Richards, MDChattanooga, TN 374041891784518
- Steven Stubblefield, M.D.Chattanooga, TN 374041255312799
Common questions
What is John Carter Hemphill, MD's NPI number?
John Carter Hemphill, MD's National Provider Identifier (NPI) is 1912188897, issued on Nov 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Carter Hemphill, MD located?
The NPPES record lists a practice address at 2501 Citico Ave, Chattanooga, TN, 37404. Phone: (423) 697-2000. Providers update this record themselves, so call before visiting.
How can I verify John Carter Hemphill, MD's license?
NPPES lists Tennessee license number 47332, 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 John Carter Hemphill, MD prescribe under Medicare Part D?
In 2024, John Carter Hemphill, MD had 7,854 Medicare Part D claims for 972 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. Part D covers Medicare prescriptions only.
What is John Carter Hemphill, MD's MIPS final score?
The 2023 MIPS final score is 94.7 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.