Ruth E. Lamar, M.D.
Medical Oncology Physician · Franklin, TN
Ruth E. Lamar, M.D. is a medical oncology physician with a practice address in Franklin, Tennessee, and NPI 1578597704, issued on Jul 11, 2006. Check the license (Tennessee 20297, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ruth E. Lamar
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 20297 TN
Self-reported in NPPES; status is on the state search - Practice location
- 4488 Carothers Pkwy Ste 300, Franklin, TN 37067
- Phone
- (615) 591-4764
- Enumerated
- Jul 11, 2006
- Record last updated
- Oct 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (615) 591-7947
- Medicaid IDs
- 3070225 TN
64913080 KY - Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 114 in Tennessee → Look up another NPI →
Also registered at 4488 Carothers Pkwy Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathryn Beckermann, M.D., PH.D.Hematology & Oncology Physician1023375391
- Catherine Benson, AGACNP-BCNurse Practitioner1548621824
- Rodney Dorand, MD, PHDHematology & Oncology Physician1215424080
- Julie Means, MDMedical Oncology Physician1982703328
- Patrick Murphy, M.D.Medical Oncology Physician1487672291
Verify Ruth E. Lamar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 20297Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average medical oncology physician in 2024
259 Medicare Part D claims for 63 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims. 13 claims were for opioids.
Most prescribed
- Anastrozole35 claims
- Eliquis25 claims
- Ibrance21 claims
- Letrozole15 claims
- Hydroxyurea14 claims
- Tasigna13 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: $1,111.08
42 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 3,343 providers of this specialty with any payment received $11,773.47 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.
Ruth E. Lamar among 114 medical oncology physician records in Tennessee
Ruth E. Lamar, M.D. is one of 114 medical oncology physician records with a practice address in Tennessee. 82% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 45% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2019 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Tennessee
There are 114 medical oncology physician records in Tennessee.
All 114 in Tennessee → Every provider in Franklin → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Stephen Cantrell, MDFranklin, TN 370671538324587
- Julie Means, MDFranklin, TN 370671982703328
- Patrick Murphy, M.D.Franklin, TN 370671487672291
- Dianna Shipley, MDGallatin, TN 370661700810371
- Naimisha Marneni, MDDickson, TN 370551013577477
- Stuart Spigel, MDDickson, TN 370551801826185
- James Peyton, M.D.Lebanon, TN 370871881646073
- Rohit Patel, MDClarksville, TN 370431730115981
Common questions
What is Ruth E. Lamar, M.D.'s NPI number?
Ruth E. Lamar, M.D.'s National Provider Identifier (NPI) is 1578597704, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ruth E. Lamar, M.D. located?
The NPPES record lists a practice address at 4488 Carothers Pkwy Ste 300, Franklin, TN, 37067. Phone: (615) 591-4764. Providers update this record themselves, so call before visiting.
How can I verify Ruth E. Lamar, M.D.'s license?
NPPES lists Tennessee license number 20297, 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 Ruth E. Lamar, M.D. prescribe under Medicare Part D?
In 2024, Ruth E. Lamar, M.D. had 259 Medicare Part D claims for 63 beneficiaries; the average among medical oncology physician prescribers was 703. 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.