DR. GREGORY MARK BROWN (M.D.) – Internal Medicine Physician, NPI 1386647956
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
12,368 INTERNAL MEDICINE in FL
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Provider Addresses for DR. GREGORY MARK BROWN (M.D.)
Dixie Avenue, Leesburg, Lake County, Florida, 32748, United States
LEESBURG, FL 347482602
Phone: (352) 314-2424
Fax: (352) 314-3010
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 6 Open Payments records for all available years, with a total value of $359.
Total Amount is formed as General ($359) + Research ($0) + Ownership ($0) = $359.
Last reported payment date: 2024-12-24 • Largest payer in this snapshot: Edwards Lifesciences Corporation ($154).
Total Amount
$359
General + Research + Ownership
Payments
6
Total payment records
General Amount
$359
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-24
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-09-13
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100913000784 | I | Internal Medicine | FL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 677 | 402 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 565 | 378 | $0 |
| G0444 | Annual depression screening, 5 to 15 minutes | 410 | 410 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 407 | 407 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 118 | 97 | $0 |
Insurance plans in this area (ZIP 34748)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | FL | 82270 | Stool analysis for blood to screen for colon tumors | 47 | 47 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | VA | |
| - | NY | |
| Nurse Practitioner | MI | |
| Family Practice | TX | |
| Physician Assistant | NC | |
| Internal Medicine, Geriatric Medicine | NC | |
| Qualified Speech Language Pathologist | OK | |
| Occupational Therapist In Private Practice | NC | |
| Internal Medicine | NC | |
| Internal Medicine | NC |
Reviews
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