John Willis Marshall, MD
Emergency Medicine Physician · Chattanooga, TN
John Willis Marshall, MD is an emergency medicine physician with a practice address in Chattanooga, Tennessee, and NPI 1285676999, issued on Jun 10, 2006. Check the license (Tennessee 30691, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John Willis Marshall
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 30691 TN
Self-reported in NPPES; status is on the state search - Practice location
- 2333 Mccallie Ave, Chattanooga, TN 37404
- Phone
- (423) 493-1493
- Enumerated
- Jun 10, 2006
- Record last updated
- Mar 24, 2022
- Fax
- (423) 698-6061
- Medicaid IDs
- 000818364K GA
3836151 TN - Medicare enrollment
- Enrolled (PECOS I20050728000373); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,174 in Tennessee → Look up another NPI →
Also registered at 2333 Mccallie Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaramie Bickford, CSFA, RFASurgical Assistant1972198331
- Azra Blazevic, NPFamily Nurse Practitioner1417258898
- Ian CampbellPhysical Therapist1841168101
- Ami Chattin Ponce, MDInternal Medicine Physician1922119288
- Mark Childress, DNPAcute Care Nurse Practitioner1386368736
- Morgan Clarkson, APRN, FNP-CFamily Nurse Practitioner1861158388
Verify John Willis Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 30691Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average emergency medicine physician in 2024
653 Medicare Part D claims for 281 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 83 claims were for opioids.
Most prescribed
- Diclofenac Sodium46 claims
- Hydrocodone-Acetaminophen41 claims
- Oxycodone-Acetaminophen38 claims
- Ondansetron Odt34 claims
- Methylprednisolone29 claims
- Azithromycin27 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.
Industry payments in 2024: $192.03
1 payment: food and beverage; the largest payer was ShockWave Medical, Inc. The 12,335 providers of this specialty with any payment received $953.79 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 2 group practices
- Chattanooga Emergency Medicine PLLCChattanooga, TN
- Southeastern Emergency Physicians LLCAthens, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Willis Marshall among 1,174 emergency medicine physician records in Tennessee
John Willis Marshall, 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 fileYes · 57% of these records are
- Graduated1993 · median 2012 among the 667 with a school on file
- Record last updated2022 · 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).
112 emergency medicine physician records list a practice address in Chattanooga
They are 112 of the 7,377 NPPES records with a practice address in Chattanooga, and 1,174 emergency medicine physician records in Tennessee.
All 1,174 in Tennessee → Every provider in Chattanooga → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Lester Brodie, MDChattanooga, TN 374041104855790
- Deann Champion, M.D.Chattanooga, TN 374041457396798
- Palmella Haws, MDChattanooga, TN 374041912954538
- Forrest King, FNPChattanooga, TN 374041144250671
- Jude Malican, MDChattanooga, TN 374041629019344
- Christopher McArdle, D.O.Chattanooga, TN 374041326091265
- Walter Meier, MDChattanooga, TN 374041356387039
- Angela Ray, MDChattanooga, TN 374041639114697
Common questions
What is John Willis Marshall, MD's NPI number?
John Willis Marshall, MD's National Provider Identifier (NPI) is 1285676999, issued on Jun 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Willis Marshall, MD located?
The NPPES record lists a practice address at 2333 Mccallie Ave, Chattanooga, TN, 37404. Phone: (423) 493-1493. Providers update this record themselves, so call before visiting.
How can I verify John Willis Marshall, MD's license?
NPPES lists Tennessee license number 30691, 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 Willis Marshall, MD prescribe under Medicare Part D?
In 2024, John Willis Marshall, MD had 653 Medicare Part D claims for 281 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.