Mark J. Hamilton, MD
Family Medicine Physician · Mt Vernon, TX
Mark J. Hamilton, MD is a family medicine physician with a practice address in Mt Vernon, Texas, and NPI 1689889255, issued on May 14, 2007. Check the license (Texas N1667, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark J. Hamilton
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- N1667 TX
Self-reported in NPPES; status is on the state search - Practice location
- 500 Highway 37 S, Mt Vernon, TX 75457
- Phone
- (903) 537-8000
- Enumerated
- May 14, 2007
- Record last updated
- Jan 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090223000062); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Verify Mark J. Hamilton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N1667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
152 Medicare Part D claims for 81 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Potassium Chloride13 claims
- Levothyroxine Sodium12 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 2 group practices
- Century Integrated Partners, IncCarrollton, TX
- Hospital Care Consultants OF Corpus ChristiSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark J. Hamilton among 11,119 family medicine physician records in Texas
Mark J. Hamilton, MD is one of 11,119 family 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2007 · median 2004 among the 7,095 with a school on file
- Record last updated2011 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family medicine physician records list a practice address in Mt Vernon
They are 3 of the 13 NPPES records with a practice address in Mt Vernon, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Mt Vernon → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jean Woel Latortue, MDMt Vernon, TX 754571780871988
- Brianna Martinez Melendez, PA-CMt Vernon, TX 754571922922962
- Michael Walker, D.O.Mount Vernon, TX 754571033117973
- Christopher Burling, MDMt Pleasant, TX 754551295732832
- Rodney Burrow, M.D.Mount Pleasant, TX 754551871536714
- Williams Burrows, D.O.Mt Pleasant, TX 754551114924867
- John Cannon, DOMount Pleasant, TX 754551568475598
- Craig Delisi, M.D.Mount Pleasant, TX 754551689616849
Common questions
What is Mark J. Hamilton, MD's NPI number?
Mark J. Hamilton, MD's National Provider Identifier (NPI) is 1689889255, issued on May 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark J. Hamilton, MD located?
The NPPES record lists a practice address at 500 Highway 37 S, Mt Vernon, TX, 75457. Phone: (903) 537-8000. Providers update this record themselves, so call before visiting.
How can I verify Mark J. Hamilton, MD's license?
NPPES lists Texas license number N1667, 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 J. Hamilton, MD prescribe under Medicare Part D?
In 2024, Mark J. Hamilton, MD had 152 Medicare Part D claims for 81 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.