Phyllis Clara Chang, M.D.
Gastroenterology Physician · Bryan, TX
Phyllis Clara Chang, M.D. is a gastroenterology physician with a practice address in Bryan, Texas, and NPI 1316058266, issued on Aug 31, 2006. Check the license (Texas H9845, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Phyllis Clara Chang
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- H9845 TX
Self-reported in NPPES; status is on the state search - Practice location
- 2206 E Villa Maria RD, Bryan, TX 77802
- Phone
- (979) 776-4600
- Enumerated
- Aug 31, 2006
- Record last updated
- Aug 5, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (979) 774-0877
- Medicaid ID
- 132744701 TX
- Medicare enrollment
- Enrolled (PECOS I20101116000715); accepts Medicare assignment
- Medical or professional school
- Texas A & M University System, Hsc, College Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 2206 E Villa Maria RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Case, MDGastroenterology Physician1922263722
- Christopher Derbes, M.D.Gastroenterology Physician1003927930
- Brent Gray, M.D.Gastroenterology Physician1043321987
- Ashton Gully, PA-CPhysician Assistant1366248445
- Hannah Helm, PA-CMedical Physician Assistant1073056248
- Kayce Kieschnick, P.A.Medical Physician Assistant1811008774
Verify Phyllis Clara Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license H9845Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average gastroenterology physician in 2024
1,463 Medicare Part D claims for 579 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Pantoprazole Sodium284 claims
- Sod Sulf-Potass Sulf-Mag Sulf256 claims
- Omeprazole217 claims
- Dexlansoprazole Dr73 claims
- Famotidine70 claims
- Sucralfate50 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: $765.15
29 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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
- Central Texas Digestive Disease Association, PABryan, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Phyllis Clara Chang among 1,478 gastroenterology physician records in Texas
Phyllis Clara Chang, 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1990 · median 2003 among the 1,175 with a school on file
- Record last updated2020 · 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 Bryan → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- David Case, MDBryan, TX 778021922263722
- Christopher Derbes, M.D.Bryan, TX 778021003927930
- Brent Gray, M.D.Bryan, TX 778021043321987
- Charles Moore, MDBryan, TX 778021629020011
- Long Pham, M.D.Bryan, TX 778021366553380
- Joshua Sultz, M.D.Bryan, TX 778021588820054
- Abraham Yu, MDBryan, TX 778021992266969
- Richard Dusold, M.D.College Station, TX 778401366402182
Common questions
What is Phyllis Clara Chang, M.D.'s NPI number?
Phyllis Clara Chang, M.D.'s National Provider Identifier (NPI) is 1316058266, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Phyllis Clara Chang, M.D. located?
The NPPES record lists a practice address at 2206 E Villa Maria RD, Bryan, TX, 77802. Phone: (979) 776-4600. Providers update this record themselves, so call before visiting.
How can I verify Phyllis Clara Chang, M.D.'s license?
NPPES lists Texas license number H9845, 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 Phyllis Clara Chang, M.D. prescribe under Medicare Part D?
In 2024, Phyllis Clara Chang, M.D. had 1,463 Medicare Part D claims for 579 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.