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Dr. Mark Lee Thornton, MD
NPI1669552790PAC ID3476539503
- Medicare services, 2024
- 584
- Medicare patients, 2024
- 191
- Part D claims, 2024
- 5,494
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 7720 Jones Maltsberger Rd, San Antonio, TX 78216
- Practice phone
- Call (210) 822-2004
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Execudoc, Inc
San Antonio, Texas
Find Dr. Thornton's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark Lee Thornton is an internist in San Antonio, Texas
Dr. Thornton practices at Execudoc, Inc in San Antonio, Texas.
Dr. Thornton's NPI, 1669552790, was assigned on October 16, 2006. Dr. Thornton graduated from UTMB Health in 1980. Dr. Thornton holds Texas license F7234.
NPI and contact details
- NPI
- 1669552790NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476539503
- NPI enumeration date
- October 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (210) 822-2004
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Lee Thornton practices at Execudoc, Inc in San Antonio, Texas
Dr. Thornton's primary practice is Execudoc, Inc, at 7720 Jones Maltsberger Rd, San Antonio, TX 78216 in Bexar County. The practice phone is (210) 822-2004.
- Execudoc, Inc7720 Jones Maltsberger Rd, San Antonio, TX 78216 · Bexar CountyPhone(210) 822-2004
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Lee Thornton is affiliated with 3 sites of care and 1 medical group
Dr. Thornton's primary practice is Execudoc, Inc in San Antonio, Texas. Dr. Thornton is also affiliated with Baptist Medical Center. The medical group on file is Mark Thornton Personal Physician. Dmand AI also links Dr. Thornton to 1 more group practice or clinic, named with a free account.
Execudoc, IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark Lee Thornton's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thornton practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Execudoc, Inc | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Lee Thornton is one of 8,437 internists in Texas
Internal medicine is Dr. Thornton's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Thornton is board certified in internal medicine by the American Board of Internal Medicine. Dr. Thornton is licensed in Texas.
Specialties and state licenses
- Internal medicine, TexasPrimary
Clinical focus
Dmand AI lists aneurysm, atrial fibrillation and flutter, bronchitis, cerebrovascular disease, chronic anemia, chronic diabetes, chronic embolism thrombosis and chronic hypertension among the conditions Dr. Thornton treats.
Internists near Dr. Thornton
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark Lee Thornton billed Medicare for 584 services in 2024
CMS data shows 584 Medicare services from Dr. Thornton across 6 procedure codes in 2024, for 191 Medicare patients. Medicare paid $33,822 for them. Every service was in an office.
Medicare services, 2024584
Medicare patients191
Paid by Medicare$33,822
Procedure codes6
Dr. Thornton's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2522024: 30320%
- Tests and treatments
- 2023: 1232024: 1262%
- Other services
- 2023: 1212024: 1164%
- Surgery
- 2023: 412024: 395%
Dr. Thornton compared with the Texas median for internists, 2024
- Dr. Thornton
- Texas median
- Medicare services
- 584vs 5398% above
- Medicare patients
- 191vs 190Close to median
- Part D claims
- 4,934vs 28917.1 times
Medians across 7,794 internists in Texas with Dmand AI profiles that report each measure.
Dr. Thornton's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Thornton?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Thornton and other internists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Lee Thornton treated 191 Medicare patients in 2024, average age 78
CMS counts 191 Medicare patients who saw Dr. Thornton in 2024. The largest group is 75 to 84, with 82 patients. 65% of them have high blood pressure, and 57% have high cholesterol. Their average risk score is 0.85, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Thornton's median patient age at 74, with 45% women.
Medicare patients, 2024191
Average age78
Average risk score0.85
Dr. Thornton's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Thornton's Medicare patients by sex, 2024
- Women8343%
- Men10857%
Chronic conditions among Dr. Thornton's Medicare patients, 2024
- High blood pressure65%
- High cholesterol57%
- Arthritis39%
- Ischemic heart disease29%
- Atrial fibrillation23%
- Diabetes17%
- Cancer14%
- Chronic kidney disease12%
Share of Medicare patients with each condition. A patient can have several.
Dr. Thornton's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women45%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Lee Thornton wrote 5,494 Medicare Part D claims in 2024
In 2024, Dr. Thornton wrote 5,494 Medicare Part D claims for 314 patients. 84% of them were for generic drugs. CMS names the drug for 4,934 of them, across 115 drugs with 11 or more claims each, at $467,660 in total drug cost. In 2023, CMS named 4,679 claims across 106 drugs.
Part D claims, 20245,494
Drugs named by CMS115
Total drug cost$467,660
Part D patients314
Dr. Thornton's Part D claims by kind of drug, 2024
- Generic4,626 claims84%
- Brand-name and other868 claims16%
Dr. Thornton's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Thornton's Part D claims, 2024
- Opioids1%29 of 5,494 claims
- Antibiotics4%241 of 5,494 claims
- Antipsychotics, patients 65 and over0%20 of 5,494 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,6792024: 4,9345%
Drugs named by CMS: 115 in 2024, 106 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mark Lee Thornton takes part in Medicare
Dr. Thornton accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark Lee Thornton has 1 publication on record
Dmand AI links 1 paper to Dr. Thornton in 2015. Dr. Thornton's most frequent co-author is Gerald F. Cox, MD, PhD.
Papers1
Dr. Thornton's most frequent co-authors
Recent publications by Dr. Thornton
See who Dr. Thornton researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Thornton works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Lee Thornton received $113 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Thornton from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $113.
Companies that paid Dr. Thornton the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Lee Thornton has 1 award and honors on record
Dmand AI lists 1 award for Dr. Thornton.
Awards and honors for Dr. Thornton
- Undated
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Mark Lee Thornton graduated from UTMB Health
Dr. Thornton graduated from UTMB Health in 1980.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Mark Lee Thornton accepts plans from 9 insurance carriers
Dr. Thornton is in network with 9 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Elevance
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Humana
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Thornton accepts, by number of carriers
- PPO6
- Medicare5
- POS5
- HMO4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark Lee Thornton's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark Lee Thornton
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark Lee Thornton's NPI number?
Dr. Mark Lee Thornton's NPI number is 1669552790. It was assigned on October 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Lee Thornton?
Dr. Mark Lee Thornton is an internist in San Antonio, Texas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark Lee Thornton practice?
Dr. Thornton practices at 7720 Jones Maltsberger Rd, San Antonio, TX 78216. Dr. Thornton's primary practice is Execudoc, Inc in San Antonio, Texas. Dmand AI also links Dr. Thornton to 1 group practice or clinic.
What is Dr. Mark Lee Thornton's office phone number?
The practice phone on file for Dr. Thornton is (210) 822-2004.
What is Dr. Mark Lee Thornton's medical license number?
Dr. Thornton holds Texas license F7234.
Which hospitals is Dr. Mark Lee Thornton affiliated with?
Dr. Thornton is affiliated with Baptist Medical Center.
What medical group is Dr. Mark Lee Thornton part of?
Dr. Thornton is linked to Mark Thornton Personal Physician.
Does Dr. Mark Lee Thornton accept Medicare?
Yes. CMS data shows Dr. Thornton billed Medicare for 584 services in 2024, and Dr. Thornton accepts Medicare assignment.
How many Medicare patients does Dr. Mark Lee Thornton see?
CMS counts 191 Medicare patients who saw Dr. Thornton in 2024, with an average age of 78.
Is Dr. Mark Lee Thornton board certified?
Yes. Dr. Thornton is board certified in internal medicine by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Mark Lee Thornton bill to Medicare?
In 2024, Dr. Thornton's most billed Medicare services were office visit, established patient (99213), medicare service (G0008) and vaccine or vaccine administration (90653).
Where did Dr. Mark Lee Thornton go to medical school?
Dr. Thornton graduated from UTMB Health in 1980.
What drugs does Dr. Mark Lee Thornton prescribe most?
In 2024 Medicare Part D data, Dr. Thornton's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Levothyroxine Sodium.
Has Dr. Mark Lee Thornton received payments from drug or device companies?
CMS Open Payments shows $113 in general payments to Dr. Thornton from 1 company from 2023 to 2023. The largest total came from Eli Lilly and Company.
How long has Dr. Mark Lee Thornton been practicing?
Dr. Thornton graduated from medical school in 1980, 46 years ago.
Does Dr. Mark Lee Thornton do research?
Dmand AI links 1 publication to Dr. Thornton.
Who does Dr. Mark Lee Thornton publish with?
Dr. Thornton's most frequent co-authors are Gerald F. Cox, MD, PhD (1 shared paper).
What insurance does Dr. Mark Lee Thornton accept?
Dr. Thornton is in network with 9 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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