Derek Ngai, MD
Pediatric Gastroenterology Physician · Dallas, TX
Derek Ngai, MD is a pediatric gastroenterology physician with a practice address in Dallas, Texas, and NPI 1700231859, issued on Apr 26, 2016. Check the license (Texas S1668, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Derek Ngai
- Credential
- MD
- Primary taxonomy
- Pediatric Gastroenterology Physician 2080P0206X
- License number
- S1668 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1935 Medical District Dr, Dallas, TX 75235
- Phone
- (214) 456-2735
- Enumerated
- Apr 26, 2016
- Record last updated
- Aug 9, 2022
- Medicare enrollment
- Enrolled (PECOS I20250108004076); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2016
- Entity
- Type 1 · individual
8 nearest pediatric gastroenterology physician records → All 190 in Texas → Look up another NPI →
Also registered at 1935 Medical District Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lea Abou Haidar, MDStudent in an Organized Health Care Education/Training Program1538863980
- Osama Aboul-Fettouh, M.D.Anesthesiology Physician1376634741
- Ann Abraham, CPNPPediatric Nurse Practitioner1427315183
- Annie Abraham, MDPediatric Rehabilitation Medicine Physician1336636141
- Merin Abraham, CPNPPediatric Nurse Practitioner1033431408
Verify Derek Ngai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S1668Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $452.42
22 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 1,184 providers of this specialty with any payment received $2,585.05 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
- University OF Texas Southwestern Medical Center AT DallasDallas, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Derek Ngai among 190 pediatric gastroenterology physician records in Texas
Derek Ngai, MD is one of 190 pediatric gastroenterology physician records with a practice address in Texas. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 85% of them.
- NPI issued2016 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 36% of these records are
- Graduated2016 · median 2004 among the 68 with a school on file
- Record last updated2022 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0206X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Gastroenterology Physician providers in Texas
There are 190 pediatric gastroenterology physician records in Texas.
All 190 in Texas → Every provider in Dallas → Pediatric Gastroenterology Physician nationwide →
The 8 pediatric gastroenterology physician records with the nearest ZIP codes
- Nandini Channabasappa, MDDallas, TX 752351477765113
- Swetha Kotamraju, MDDallas, TX 752351518420637
- Lauren Lazar, MDDallas, TX 752351730507328
- Ashley Polachek, MDDallas, TX 752351275191546
- Alexandra Pottorff, MD, MPHDallas, TX 752351578190633
- Jacobo Santolaya, M.D.Dallas, TX 752351215386099
- Srisindu Vellanki, M.D.Dallas, TX 752351598150294
- Kendall Brown, M.D.Dallas, TX 752301407815228
Common questions
What is Derek Ngai, MD's NPI number?
Derek Ngai, MD's National Provider Identifier (NPI) is 1700231859, issued on Apr 26, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Derek Ngai, MD located?
The NPPES record lists a practice address at 1935 Medical District Dr, Dallas, TX, 75235. Phone: (214) 456-2735. Providers update this record themselves, so call before visiting.
How can I verify Derek Ngai, MD's license?
NPPES lists Texas license number S1668, 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.
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.