NPPES file of Aug 9, 2026

Mark Louis Gruwell, M.D.

Anesthesiology Physician · Chattanooga, TN

Mark Louis Gruwell, M.D. is an anesthesiology physician with a practice address in Chattanooga, Tennessee, and NPI 1669447876, issued on Feb 21, 2006. Check the license (Tennessee MD17937, as entered in NPPES) on the Tennessee Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669447876
Name
Mark Louis Gruwell
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
MD17937 TN
MD30778 GA
Self-reported in NPPES; status is on the state search
Practice location
2341 Mccallie Ave, Chattanooga, TN 37404
Phone
(423) 698-3309
Enumerated
Feb 21, 2006
Record last updated
Sep 26, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(423) 624-6355
Medicaid ID
3028391 TN
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest anesthesiology physician records → All 971 in Tennessee → Look up another NPI →

Also registered at 2341 Mccallie Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. David Allen, CRNACertified Registered Nurse Anesthetist1750356630
  2. Elaidys Alvarez, CRNACertified Registered Nurse Anesthetist1689862914
  3. Paula Babb, CRNACertified Registered Nurse Anesthetist1780753350
  4. Sally Baker, CRNACertified Registered Nurse Anesthetist1760458418
  5. Jeffrey Balser, M.D.Anesthesiology Physician1891760153
  6. Venkata Bareddy, M.D.Anesthesiology Physician1538134804

Verify Mark Louis Gruwell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTennessee Board of Medical Examiners
    Search for license MD17937    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Tennessee license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mark Louis Gruwell among 971 anesthesiology physician records in Tennessee

Mark Louis Gruwell, M.D. is one of 971 anesthesiology physician records with a practice address in Tennessee. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 20% of them.

  • NPI issued2006 · 20% of these records are older, 45% newer
  • In a Medicare fileNo · 70% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2013 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in Tennessee

There are 971 anesthesiology physician records in Tennessee. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 971 in Tennessee → Every provider in Chattanooga → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Jeffrey Balser, M.D.Chattanooga, TN 374041891760153
  2. Venkata Bareddy, M.D.Chattanooga, TN 374041538134804
  3. Noel Barron, M.D.Chattanooga, TN 374041386619666
  4. Marilyn Bean, M.D.Chattanooga, TN 374041366417545
  5. Jesse Epps, M.D.Chattanooga, TN 374041245205434
  6. Serena Lau, M.D.Chattanooga, TN 374041477528693
  7. David Musgrave, M.D.Chattanooga, TN 374041578538716
  8. George Oscar, M.D.Chattanooga, TN 374041811962053

Common questions

What is Mark Louis Gruwell, M.D.'s NPI number?

Mark Louis Gruwell, M.D.'s National Provider Identifier (NPI) is 1669447876, issued on Feb 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Louis Gruwell, M.D. located?

The NPPES record lists a practice address at 2341 Mccallie Ave, Chattanooga, TN, 37404. Phone: (423) 698-3309. Providers update this record themselves, so call before visiting.

How can I verify Mark Louis Gruwell, M.D.'s license?

NPPES lists Tennessee license number MD17937, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.