Stephen Guess Richardson, MD
Family Medicine Physician · San Marcos, TX
Stephen Guess Richardson, MD is a family medicine physician with a practice address in San Marcos, Texas, and NPI 1992020440, issued on Mar 27, 2010. Check the license (Texas P3805, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Stephen Guess Richardson
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- P3805 TX
Self-reported in NPPES; status is on the state search - Practice location
- 401 Broadway St Ste A, San Marcos, TX 78666
- Phone
- (512) 805-5650
- Enumerated
- Mar 27, 2010
- Record last updated
- Jul 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (512) 392-4744
- Medicaid ID
- 339722601 TX
- Medicare enrollment
- Enrolled (PECOS I20140909001961); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In Shreveport, 2010
- Entity
- Type 1 · individual
Also registered at 401 Broadway St Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Concepcion Cantu, LBSWCase Manager/Care Coordinator1154548055
- Deborah Mahan, R.N. B.S.N.Case Manager/Care Coordinator1841559788
- Marla Sanders, BSN, RNCase Manager/Care Coordinator1215297924
- Merrilee Storm, RNCase Manager/Care Coordinator1285995084
Verify Stephen Guess Richardson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P3805Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average family medicine physician in 2024
1,897 Medicare Part D claims for 112 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 52 claims were for opioids.
Most prescribed
- Atorvastatin Calcium144 claims
- Lisinopril77 claims
- Ozempic76 claims
- Amlodipine Besylate60 claims
- Fluticasone Propionate54 claims
- Lisinopril-Hydrochlorothiazide48 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
- Christus Trinity ClinicSan Marcos, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
27 family medicine physician records list a practice address in San Marcos
They are 27 of the 1,003 NPPES records with a practice address in San Marcos, and 11,119 family medicine physician records in Texas.
All 27 in San Marcos → All 11,119 in Texas → Every provider in San Marcos →
Other family medicine physician records in Texas
- Srinivasa Aaluri, MDEl Paso, TX1265566509
- Maira Aamir, MDShenandoah, TX1932660859
- Fakhrudin Aaseemah Mohamed, M.DAllen, TX1952782518
- So Abad, MDWichita Falls, TX1184624694
- Yoseph AbadiRichardson, TX1700742640
- Marcus Abadie, M.D.Athens, TX1104821107
- Montserrat Abadie Sole, M.D.Fort Worth, TX1245437078
- Sarah Abang-Hayes, M.D.San Antonio, TX1326244724
- Ahmad Abazid, M.DRichardson, TX1013238401
- Syed Abbas, M.D.Houston, TX1821267477
Common questions
What is Stephen Guess Richardson, MD's NPI number?
Stephen Guess Richardson, MD's National Provider Identifier (NPI) is 1992020440, issued on Mar 27, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Guess Richardson, MD located?
The NPPES record lists a practice address at 401 Broadway St Ste A, San Marcos, TX, 78666. Phone: (512) 805-5650. Providers update this record themselves, so call before visiting.
How can I verify Stephen Guess Richardson, MD's license?
NPPES lists Texas license number P3805, 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 Stephen Guess Richardson, MD prescribe under Medicare Part D?
In 2024, Stephen Guess Richardson, MD had 1,897 Medicare Part D claims for 112 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.