Brian Thomas Trezak, MD
Internal Medicine Physician · Florence, SC
Brian Thomas Trezak, MD is an internal medicine physician with a practice address in Florence, South Carolina, and NPI 1003913526, issued on Sep 19, 2006. Check the license (South Carolina 21385, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Brian Thomas Trezak
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 21385 SC
17416 NH
62579 CT
MD28278 ME
2007-000516 NC
Self-reported in NPPES; status is on the state search - Practice location
- 805 Pamplico Hwy, Florence, SC 29505
- Phone
- (843) 792-1414
- Enumerated
- Sep 19, 2006
- Record last updated
- Aug 21, 2024
- Medicaid ID
- 213851 SC
- Medicare enrollment
- Enrolled (PECOS I20160928001206); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,881 in South Carolina → Look up another NPI →
Also registered at 805 Pamplico Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fnu AbdullahStudent in an Organized Health Care Education/Training Program1063335487
- Samson Abolaji, MDFamily Medicine Physician1922946714
- Mouhannad AbouelezzStudent in an Organized Health Care Education/Training Program1669359006
- Danny Aboujamra, MDStudent in an Organized Health Care Education/Training Program1104661446
- Sheron Abraham, D.O.Family Medicine Physician1447548144
- Michael Adams, CRNA, ARNPCertified Registered Nurse Anesthetist1225472251
Verify Brian Thomas Trezak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 21385Check 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% more Medicare Part D claims than the average internal medicine physician in 2024
5,165 Medicare Part D claims for 371 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 98 claims were for opioids.
Most prescribed
- Furosemide245 claims
- Levothyroxine Sodium238 claims
- Atorvastatin Calcium234 claims
- Eliquis189 claims
- Gabapentin188 claims
- Trazodone Hcl166 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.
Bills Medicare through one group practice
- Vantage Healthcare LLCExeter, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Thomas Trezak among 1,881 internal medicine physician records in South Carolina
Brian Thomas Trezak, MD is one of 1,881 internal medicine physician records with a practice address in South Carolina. 81% 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, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1996 · median 2006 among the 1,119 with a school on file
- Record last updated2024 · 46% 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 South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
62 internal medicine physician records list a practice address in Florence
They are 62 of the 2,634 NPPES records with a practice address in Florence, and 1,881 internal medicine physician records in South Carolina.
All 1,881 in South Carolina → Every provider in Florence → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rose BasnyatFlorence, SC 295051528478831
- Eduardo Donato, MDFlorence, SC 295051629035878
- Charles Edwards, D.O.Florence, SC 295051538466206
- Uchechukwu Egbujo, MDFlorence, SC 295051497231211
- Sergio GrajedaFlorence, SC 295051689341794
- Madeline Larossa, MDFlorence, SC 295051316575160
- Ashish Parmar, DOFlorence, SC 295051457973323
- Ami Parmar, MDFlorence, SC 295051851037337
Common questions
What is Brian Thomas Trezak, MD's NPI number?
Brian Thomas Trezak, MD's National Provider Identifier (NPI) is 1003913526, issued on Sep 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian Thomas Trezak, MD located?
The NPPES record lists a practice address at 805 Pamplico Hwy, Florence, SC, 29505. Phone: (843) 792-1414. Providers update this record themselves, so call before visiting.
How can I verify Brian Thomas Trezak, MD's license?
NPPES lists South Carolina license number 21385, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian Thomas Trezak, MD prescribe under Medicare Part D?
In 2024, Brian Thomas Trezak, MD had 5,165 Medicare Part D claims for 371 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.