Charles Gia Phan, M.D.
Gastroenterology Physician · Sugar Land, TX
Charles Gia Phan, M.D. is a gastroenterology physician with a practice address in Sugar Land, Texas, and NPI 1457303737, issued on May 16, 2006. Check the license (Texas L6141, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Charles Gia Phan
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- L6141 TX
Self-reported in NPPES; status is on the state search - Practice location
- 16659 Southwest Fwy, Sugar Land, TX 77479
- Phone
- (281) 277-2213
- Enumerated
- May 16, 2006
- Record last updated
- Aug 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (281) 277-0192
- Medicaid IDs
- 1597890 TX
1597908 TX - Medicare enrollment
- Enrolled (PECOS I20110516000132); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1992
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 16659 Southwest Fwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Charles Gia Phan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L6141Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average gastroenterology physician in 2024
965 Medicare Part D claims for 317 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Vemlidy291 claims
- Omeprazole222 claims
- Gavilyte-G125 claims
- Famotidine106 claims
- Entecavir48 claims
- Peg-3350 And Electrolytes32 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $11,147.90
24 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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
- Texas Digestive Disease Consultants, PLLCSugar Land, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Gia Phan among 1,478 gastroenterology physician records in Texas
Charles Gia Phan, 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
- Graduated1992 · median 2003 among the 1,175 with a school on file
- Record last updated2015 · 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 Sugar Land → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Samuel Akinyeye, MDSugar Land, TX 774791023462876
- Altaib Al YassinSugar Land, TX 774791972008134
- Neel Choksi, M.D.Sugar Land, TX 774791124228234
- Leka Gajula, MDSugar Land, TX 774791033119748
- Nisreen Husain, M.D.Sugar Land, TX 774791790948248
- Malcolm Irani, M.D.Sugar Land, TX 774791285083618
- Nasrullah Manji, M.D.Sugar Land, TX 774791164470878
- Ephraim Nsien, MDSugar Land, TX 774791982718433
Common questions
What is Charles Gia Phan, M.D.'s NPI number?
Charles Gia Phan, M.D.'s National Provider Identifier (NPI) is 1457303737, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Gia Phan, M.D. located?
The NPPES record lists a practice address at 16659 Southwest Fwy, Sugar Land, TX, 77479. Phone: (281) 277-2213. Providers update this record themselves, so call before visiting.
How can I verify Charles Gia Phan, M.D.'s license?
NPPES lists Texas license number L6141, 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 Charles Gia Phan, M.D. prescribe under Medicare Part D?
In 2024, Charles Gia Phan, M.D. had 965 Medicare Part D claims for 317 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Charles Gia Phan, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.