Gregory Mark Brown, M.D.
Internal Medicine Physician · Leesburg, FL
Gregory Mark Brown, M.D. is an internal medicine physician with a practice address in Leesburg, Florida, and NPI 1386647956, issued on May 27, 2005. Check the license (Florida ME0058899, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Gregory Mark Brown
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- ME0058899 FL
Self-reported in NPPES; status is on the state search - Practice location
- 619 W Dixie Ave, Leesburg, FL 34748
- Phone
- (352) 314-2424
- Enumerated
- May 27, 2005
- Record last updated
- Apr 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (352) 314-3010
- Medicaid ID
- 054017000 FL
- Medicare enrollment
- Enrolled (PECOS I20100913000784); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 10,151 in Florida → Look up another NPI →
Also registered at 619 W Dixie Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hannah BerrySpeech-Language Assistant1508787144
- Chelsea BogartSpeech-Language Pathologist1861129413
- Madeline Cravens, MSSpeech-Language Pathologist1497502835
- Payton KlingmanBehavior Technician1295619948
- Camilla LevranSpeech-Language Assistant1588411847
- Martha LogginsPhysical Medicine & Rehabilitation Physician1205787819
Verify Gregory Mark Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME0058899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,367 Medicare Part D claims for 572 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 51 claims were for opioids.
Most prescribed
- Atorvastatin Calcium731 claims
- Amlodipine Besylate404 claims
- Levothyroxine Sodium404 claims
- Lisinopril287 claims
- Rosuvastatin Calcium267 claims
- Famotidine232 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: $325.84
4 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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 one group practice
- Legacy Healthcare Services IncThe Villages, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Mark Brown among 10,151 internal medicine physician records in Florida
Gregory Mark Brown, M.D. is one of 10,151 internal medicine physician records with a practice address in Florida. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1988 · median 2004 among the 6,606 with a school on file
- Record last updated2015 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 internal medicine physician records list a practice address in Leesburg
They are 29 of the 1,063 NPPES records with a practice address in Leesburg, and 10,151 internal medicine physician records in Florida.
All 10,151 in Florida → Every provider in Leesburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Peter Ankoh, M.D.Leesburg, FL 347481720044241
- Neyton Baltodano, M.D.Leesburg, FL 347481871543165
- Dwaraknadh Banala, M.D.Leesburg, FL 347481437106614
- Arthur Dalley, MDLeesburg, FL 347481124026810
- Cindy Flack, MDLeesburg, FL 347481174568901
- Miguel Gonzalez, MDLeesburg, FL 347481750333480
- Gustavo Granada, MDLeesburg, FL 347481881605137
- Ravi Gupta, M.D.Leesburg, FL 347481922077338
Common questions
What is Gregory Mark Brown, M.D.'s NPI number?
Gregory Mark Brown, M.D.'s National Provider Identifier (NPI) is 1386647956, issued on May 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Mark Brown, M.D. located?
The NPPES record lists a practice address at 619 W Dixie Ave, Leesburg, FL, 34748. Phone: (352) 314-2424. Providers update this record themselves, so call before visiting.
How can I verify Gregory Mark Brown, M.D.'s license?
NPPES lists Florida license number ME0058899, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Mark Brown, M.D. prescribe under Medicare Part D?
In 2024, Gregory Mark Brown, M.D. had 8,367 Medicare Part D claims for 572 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.