Daniel Siao Zhang, M.D
Gastroenterology Physician · Houston, TX
Daniel Siao Zhang, M.D is a gastroenterology physician with a practice address in Houston, Texas, and NPI 1306264130, issued on Mar 29, 2014. Check the license (Texas R3459, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Daniel Siao Zhang
- Credential
- M.D
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- R3459 TX
Self-reported in NPPES; status is on the state search - Practice location
- 9110 Katy Freeway, Houston, TX 77055
- Phone
- (713) 442-6900
- Enumerated
- Mar 29, 2014
- Record last updated
- Mar 18, 2025
- Medicaid IDs
- 415169801 TX
415169802 TX
415169803 TX - Medicare enrollment
- Enrolled (PECOS I20200710002072); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2014
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 9110 Katy Freeway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wafa Hafiz, FNP-CFamily Nurse Practitioner1902617186
- Wei Kuo, MDOccupational Medicine Physician1982086419
Verify Daniel Siao Zhang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R3459Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% more Medicare Part D claims than the average gastroenterology physician in 2024
1,576 Medicare Part D claims for 624 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf350 claims
- Omeprazole346 claims
- Pantoprazole Sodium171 claims
- Sucralfate103 claims
- Famotidine53 claims
- Creon40 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: $218.81
6 payments; by number, the most common kind was food and beverage; the largest payer was Intercept Pharmaceuticals, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Kelsey-Seybold Medical Group, PLLCHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel Siao Zhang among 1,478 gastroenterology physician records in Texas
Daniel Siao Zhang, M.D is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.
- NPI issued2014 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2014 · median 2003 among the 1,175 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in Houston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Pedro Arguello, M.D.Houston, TX 770551508876939
- Ernst DorschHouston, TX 770551578530176
- David Nemoto, M.D.Houston, TX 770551528240686
- Mohammade Zafarnia, M.D.Houston, TX 770551023039989
- Marc Catalano, MDHouston, TX 770541952378317
- Ahmad Farooq, MDHouston, TX 770541114269305
- Craig Johnson, M.D.Houston, TX 770561629163571
- John Mathias, MDHouston, TX 770541639239643
Common questions
What is Daniel Siao Zhang, M.D's NPI number?
Daniel Siao Zhang, M.D's National Provider Identifier (NPI) is 1306264130, issued on Mar 29, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Daniel Siao Zhang, M.D located?
The NPPES record lists a practice address at 9110 Katy Freeway, Houston, TX, 77055. Phone: (713) 442-6900. Providers update this record themselves, so call before visiting.
How can I verify Daniel Siao Zhang, M.D's license?
NPPES lists Texas license number R3459, 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 Daniel Siao Zhang, M.D prescribe under Medicare Part D?
In 2024, Daniel Siao Zhang, M.D had 1,576 Medicare Part D claims for 624 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.