NPPES file of Aug 9, 2026

John Mark Lambert, M.D.

Psychiatry Physician · Gallatin, TN

John Mark Lambert, M.D. is a psychiatry physician with a practice address in Gallatin, Tennessee, and NPI 1326353087, issued on Aug 18, 2010. Check the license (Tennessee 0000055791, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326353087
Name
John Mark Lambert
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
0000055791 TN
Self-reported in NPPES; status is on the state search
Practice location
1529 Hunt Club Blvd Ste 100, Gallatin, TN 37066
Phone
(615) 206-8650
Enumerated
Aug 18, 2010
Record last updated
Oct 15, 2023
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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Also registered at 1529 Hunt Club Blvd Ste 100

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

  1. Deidre Bentley, RN-MSN, CKNS, BCFMPRegistered Nurse1144187857
  2. Ian Crider, PTPhysical Therapist1336524693
  3. Jesse DavenportPhysical Therapist1851748958
  4. Kymberly Moyer, D.O.Family Medicine Physician1295199933
  5. Ashley Steinberger, DNP, PMHNP-BCPsychiatry Physician1043081649

Verify John Mark Lambert 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 0000055791
    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

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89% fewer Medicare Part D claims than the average psychiatry physician in 2024

105 Medicare Part D claims for 11 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. John Lambert105
  2. Specialty average1,000

Most prescribed

  1. Trazodone Hcl23 claims
  2. Sertraline Hcl15 claims
  3. Gabapentin13 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.

John Mark Lambert among 731 psychiatry physician records in Tennessee

John Mark Lambert, M.D. is one of 731 psychiatry physician records with a practice address in Tennessee. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 67% of them.

  • NPI issued2010 · 67% of these records are older, 29% newer
  • In a Medicare fileYes · 66% of these records are
  • In the CMS Doctors and Clinicians fileNo · 45% of these records are
  • Record last updated2023 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in Tennessee

There are 731 psychiatry physician records in Tennessee.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Arica BurtonGallatin, TN 370661356278170
  2. Jessica Douglas, D.O.Gallatin, TN 370661700933660
  3. Don Elazar, MDGallatin, TN 370661730370610
  4. Gladys Gregory, M.D.Gallatin, TN 370661578531745
  5. Ashley Steinberger, DNP, PMHNP-BCGallatin, TN 370661043081649
  6. William Bell, M.D.Franklin, TN 370671902835358
  7. James Hart, M.D.Franklin, TN 370671215915871
  8. Robert Jack, M.D.Franklin, TN 370671104804764

Common questions

What is John Mark Lambert, M.D.'s NPI number?

John Mark Lambert, M.D.'s National Provider Identifier (NPI) is 1326353087, issued on Aug 18, 2010. An NPI identifies a provider in billing; it is not a license.

Where is John Mark Lambert, M.D. located?

The NPPES record lists a practice address at 1529 Hunt Club Blvd Ste 100, Gallatin, TN, 37066. Phone: (615) 206-8650. Providers update this record themselves, so call before visiting.

How can I verify John Mark Lambert, M.D.'s license?

NPPES lists Tennessee license number 0000055791, 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 Mark Lambert, M.D. prescribe under Medicare Part D?

In 2024, John Mark Lambert, M.D. had 105 Medicare Part D claims for 11 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.