Grayson Smith, MD
Internal Medicine Physician · San Marcos, TX
Grayson Smith, MD is an internal medicine physician with a practice address in San Marcos, Texas, and NPI 1740224567, issued on Jun 15, 2006. Check the license (Texas H2792, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Grayson Smith
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- H2792 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1305 Wonder World Dr, San Marcos, TX 78666
- Phone
- (512) 396-1525
- Enumerated
- Jun 15, 2006
- Record last updated
- Nov 19, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (512) 353-2530
- Medicaid ID
- 042439202 TX
- Medicare enrollment
- Enrolled (PECOS I20050210000131); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 1986
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 1305 Wonder World Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gregory Alexander, CRNACertified Registered Nurse Anesthetist1396770590
- John Cluley, M.D.Gastroenterology Physician1790915858
- Edward Coles, M.D.Gastroenterology Physician1912991621
- William Deschner, M.D.Gastroenterology Physician1023003563
- Donna Dolan, MDInternal Medicine Physician1831134824
- Carol Garner, MSN,CS,FNPFamily Nurse Practitioner1295734036
Verify Grayson Smith in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license H2792Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,178 Medicare Part D claims for 589 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 66 claims were for opioids.
Most prescribed
- Levothyroxine Sodium405 claims
- Meloxicam340 claims
- Lisinopril325 claims
- Amlodipine Besylate317 claims
- Atorvastatin Calcium274 claims
- Rosuvastatin Calcium249 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
- Bhs Physicians Network, IncSan Antonio, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grayson Smith among 9,175 internal medicine physician records in Texas
Grayson Smith, 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
- Graduated1986 · median 2004 among the 6,088 with a school on file
- Record last updated2009 · 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).
13 internal medicine physician records list a practice address in San Marcos
They are 13 of the 1,003 NPPES records with a practice address in San Marcos, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in San Marcos → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Raka Amin, MDSan Marcos, TX 786661437576493
- Jose Ayala, MDSan Marcos, TX 786661114960663
- Larry Beville, NPSan Marcos, TX 786661770897498
- Emilio Carranco, M.D.San Marcos, TX 786661730341660
- Donna Dolan, MDSan Marcos, TX 786661831134824
- Rubin Harris, MDSan Marcos, TX 786661386619765
- Gregory Moore, MDSan Marcos, TX 786661417958760
- Cody Nichols, M.D.San Marcos, TX 786661295766038
Common questions
What is Grayson Smith, MD's NPI number?
Grayson Smith, MD's National Provider Identifier (NPI) is 1740224567, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Grayson Smith, MD located?
The NPPES record lists a practice address at 1305 Wonder World Dr, San Marcos, TX, 78666. Phone: (512) 396-1525. Providers update this record themselves, so call before visiting.
How can I verify Grayson Smith, MD's license?
NPPES lists Texas license number H2792, 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 Grayson Smith, MD prescribe under Medicare Part D?
In 2024, Grayson Smith, MD had 8,178 Medicare Part D claims for 589 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.