NPPES file of Aug 9, 2026

Louis Varner, MD

Hematology & Oncology Physician · Hattiesburg, MS

Louis Varner, MD is a hematology & oncology physician with a practice address in Hattiesburg, Mississippi, and NPI 1669682134, issued on May 23, 2007. Check the license on the Mississippi State Board of Medical Licensure; 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
1669682134
Name
Louis Varner
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
38844 TN
Self-reported in NPPES; status is on the state search
Practice location
301 S 28TH Ave, Hattiesburg, MS 39401
Phone
(601) 261-1700
Enumerated
May 23, 2007
Record last updated
Aug 11, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(601) 579-5240
Medicaid ID
07858331 MS
Medicare enrollment
Enrolled (PECOS I20131211000752); accepts Medicare assignment
Medical or professional school
University Of Mississippi School Of Medicine, 2003
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 301 S 28TH Ave

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

  1. Victoria Barrett, PHARMDPharmacist1780513895
  2. Francis Bell, DOHematology & Oncology Physician1912437310
  3. Harry Butler, M.D.Hematology & Oncology Physician1669464012
  4. Laurie Douglas, MDHematology & Oncology Physician1013173590
  5. Madeline Fitzpatrick, MDHematology & Oncology Physician1295399293
  6. James Herrington, MDHematology & Oncology Physician1730192907

Verify Louis Varner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMississippi State Board of Medical LicensureCheck 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 Mississippi 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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91% more Medicare Part D claims than the average hematology & oncology physician in 2024

1,674 Medicare Part D claims for 242 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 269 claims were for opioids.

  1. Louis Varner1,674
  2. Specialty average877

Most prescribed

  1. Anastrozole257 claims
  2. Oxycodone-Acetaminophen97 claims
  3. Ondansetron Odt91 claims
  4. Hydrocodone-Acetaminophen85 claims
  5. Promethazine Hcl73 claims
  6. Valacyclovir61 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: $1,903.86

92 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Louis Varner$1,903.86
  2. Specialty average$7,481.41

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

  1. Hattiesburg Clinic PAHattiesburg, MS

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Louis Varner among 64 hematology & oncology physician records in Mississippi

Louis Varner, MD is one of 64 hematology & oncology physician records with a practice address in Mississippi. 92% 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 48% of them.

  • NPI issued2007 · 48% of these records are older, 36% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated2003 · median 2002 among the 52 with a school on file
  • Record last updated2020 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Mississippi

There are 64 hematology & oncology physician records in Mississippi.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Francis Bell, DOHattiesburg, MS 394011912437310
  2. Harry Butler, M.D.Hattiesburg, MS 394011669464012
  3. Laurie Douglas, MDHattiesburg, MS 394011013173590
  4. Madeline Fitzpatrick, MDHattiesburg, MS 394011295399293
  5. Jacob Graham, M.D.Hattiesburg, MS 394011144517715
  6. James Herrington, MDHattiesburg, MS 394011730192907
  7. John Hrom, MDHattiesburg, MS 394011134238496
  8. David Morris, MDHattiesburg, MS 394011477595643

Common questions

What is Louis Varner, MD's NPI number?

Louis Varner, MD's National Provider Identifier (NPI) is 1669682134, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Louis Varner, MD located?

The NPPES record lists a practice address at 301 S 28TH Ave, Hattiesburg, MS, 39401. Phone: (601) 261-1700. Providers update this record themselves, so call before visiting.

How can I verify Louis Varner, MD's license?

Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Louis Varner, MD prescribe under Medicare Part D?

In 2024, Louis Varner, MD had 1,674 Medicare Part D claims for 242 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.