Allison Marsh, MD
Family Medicine Physician · San Marcos, TX
Allison Marsh, MD is a family medicine physician with a practice address in San Marcos, Texas, and NPI 1952891475, issued on May 10, 2018. Check the license (Texas T8271, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Allison Marsh
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- T8271 TX
DR.0065609 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1320 Wonder World Dr Ste 101, San Marcos, TX 78666
- Phone
- (512) 396-3911
- Enumerated
- May 10, 2018
- Record last updated
- Jan 15, 2025
- Medicare enrollment
- Enrolled (PECOS I20220818003753); accepts Medicare assignment
- Medical or professional school
- University Of South Alabama College Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 1320 Wonder World Dr Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anthony GibbsPhysician Assistant1710457940
- James Jankowski, PAPhysician Assistant1083808968
- Megan Juarez, NP-CFamily Nurse Practitioner1952798779
- Rebecca King, ACNSAdult Health Clinical Nurse Specialist1255648259
- Robert Reid, MDFamily Medicine Physician1164836532
- Nicole Riojas, D.O.Family Medicine Physician1598050676
Verify Allison Marsh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license T8271Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average family medicine physician in 2024
1,935 Medicare Part D claims for 182 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium103 claims
- Levothyroxine Sodium97 claims
- Lisinopril94 claims
- Rosuvastatin Calcium68 claims
- Metformin Hcl56 claims
- Amlodipine Besylate54 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.
Industry payments in 2024: $20.58
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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).
Allison Marsh among 11,119 family medicine physician records in Texas
Allison Marsh, 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 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2018 · median 2004 among the 7,095 with a school on file
- Record last updated2025 · 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).
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 11,119 in Texas → Every provider in San Marcos → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Gregory Colon, MDSan Marcos, TX 786661972594141
- Sarah Doss, M.D.San Marcos, TX 786661679599732
- Jennifer Driskell, MDSan Marcos, TX 786661386634657
- Roy Hotz, MDSan Marcos, TX 786661477666824
- John Jackson, M.D.San Marcos, TX 786661457350902
- Alan Lee, M.D.San Marcos, TX 786661336164425
- Jacqueline Livingston, DOSan Marcos, TX 786661326004912
- Vip Mangalick, MDSan Marcos, TX 786661437347697
Common questions
What is Allison Marsh, MD's NPI number?
Allison Marsh, MD's National Provider Identifier (NPI) is 1952891475, issued on May 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Allison Marsh, MD located?
The NPPES record lists a practice address at 1320 Wonder World Dr Ste 101, San Marcos, TX, 78666. Phone: (512) 396-3911. Providers update this record themselves, so call before visiting.
How can I verify Allison Marsh, MD's license?
NPPES lists Texas license number T8271, 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 Allison Marsh, MD prescribe under Medicare Part D?
In 2024, Allison Marsh, MD had 1,935 Medicare Part D claims for 182 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.