Mark Lee Thornton, MD
Internal Medicine Physician · San Antonio, TX
Mark Lee Thornton, MD is an internal medicine physician with a practice address in San Antonio, Texas, and NPI 1669552790, issued on Oct 16, 2006. Check the license (Texas F7234, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Lee Thornton
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- F7234 TX
Self-reported in NPPES; status is on the state search - Practice location
- 7720 Jones Maltsberger RD, San Antonio, TX 78216
- Phone
- (210) 822-2004
- Enumerated
- Oct 16, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (210) 822-2215
- Medicare enrollment
- Enrolled (PECOS I20160224002265); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 1980
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 7720 Jones Maltsberger RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Oliver, DDSGeneral Practice Dentistry1902012776
Verify Mark Lee Thornton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license F7234Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average internal medicine physician in 2024
5,494 Medicare Part D claims for 314 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
Most prescribed
- Atorvastatin Calcium340 claims
- Rosuvastatin Calcium260 claims
- Levothyroxine Sodium202 claims
- Losartan Potassium202 claims
- Amlodipine Besylate176 claims
- Escitalopram Oxalate149 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
- Execudoc, IncSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Lee Thornton among 9,175 internal medicine physician records in Texas
Mark Lee Thornton, MD is one of 9,175 internal medicine physician records with a practice address in Texas. 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1980 · median 2004 among the 6,088 with a school on file
- Record last updated2007 · 49% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
657 internal medicine physician records list a practice address in San Antonio
They are 657 of the 37,749 NPPES records with a practice address in San Antonio, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in San Antonio → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leslee Ball-Scovel, MDSan Antonio, TX 782161790759371
- Reid Hartson, MDSan Antonio, TX 782161063528263
- Roseann Miller, MDSan Antonio, TX 782161285646141
- Dennis Murphree, MDSan Antonio, TX 782161174520894
- Kwame Obeng, M.D.San Antonio, TX 782161851320402
- Anthony Oliva, MDSan Antonio, TX 782161467569822
- Lino Ramos, MDSan Antonio, TX 782161851332415
- Shankar Sanka, M.D.San Antonio, TX 782161851395495
Common questions
What is Mark Lee Thornton, MD's NPI number?
Mark Lee Thornton, MD's National Provider Identifier (NPI) is 1669552790, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Lee Thornton, MD located?
The NPPES record lists a practice address at 7720 Jones Maltsberger RD, San Antonio, TX, 78216. Phone: (210) 822-2004. Providers update this record themselves, so call before visiting.
How can I verify Mark Lee Thornton, MD's license?
NPPES lists Texas license number F7234, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Lee Thornton, MD prescribe under Medicare Part D?
In 2024, Mark Lee Thornton, MD had 5,494 Medicare Part D claims for 314 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.