NPPES file of Aug 9, 2026

Cindy Lyou Chan, M.D.

Internal Medicine Physician · League City, TX

Cindy Lyou Chan, M.D. is an internal medicine physician with a practice address in League City, Texas, and NPI 1154588705, issued on May 21, 2008. Check the license (Texas P0087, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1154588705
Name
Cindy Lyou Chan
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
P0087 TX
Self-reported in NPPES; status is on the state search
Practice location
2660 Gulf Fwy S Ste 6, League City, TX 77573
Phone
(832) 505-2250
Enumerated
May 21, 2008
Record last updated
Feb 19, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicaid ID
282918601 TX
Medicare enrollment
Enrolled (PECOS I20110817000402); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 2008
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 2660 Gulf Fwy S Ste 6

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Simone Butler, APRN, AGACNP-BCAcute Care Nurse Practitioner1316500333
  2. Christine Schwartz, MDInternal Medicine Physician1508483058
  3. Sarah Siddiqui, MD, MPHInternal Medicine Physician1467896043
  4. Ana Vidal, MDInternal Medicine Physician1124187570

Verify Cindy Lyou Chan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license P0087
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

86% more Medicare Part D claims than the average internal medicine physician in 2024

5,897 Medicare Part D claims for 377 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 189 claims were for opioids.

  1. Cindy Chan5,897
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium413 claims
  2. Amlodipine Besylate288 claims
  3. Levothyroxine Sodium204 claims
  4. Lisinopril197 claims
  5. Gabapentin178 claims
  6. Metoprolol Succinate176 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): 75 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.

  1. Qualityout of 100 · 30% of the final score73.8
  2. Costout of 100 · 30%47.8
  3. Promoting interoperabilityout of 100 · 25%94.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $41.06

2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Cindy Chan$41.06
  2. Specialty average$1,303.06

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

  1. Utmb Faculty Group PracticeLeague City, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Cindy Lyou Chan among 9,175 internal medicine physician records in Texas

Cindy Lyou Chan, M.D. is one of 9,175 internal 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 2008, is newer than 50% of them.

  • NPI issued2008 · 50% of these records are older, 46% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2008 · median 2004 among the 6,088 with a school on file
  • Record last updated2020 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

19 internal medicine physician records list a practice address in League City

They are 19 of the 1,079 NPPES records with a practice address in League City, and 9,175 internal medicine physician records in Texas.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Robin Armstrong, MDLeague City, TX 775731700826864
  2. James Bridges, M.D.League City, TX 775731760430276
  3. Quinn DufurrenaLeague City, TX 775731295267573
  4. Nasir Hussain, MDLeague City, TX 775731619148392
  5. Niki Jackson, MDLeague City, TX 775731083140891
  6. Angeles Lai-Zayas, M.D.League City, TX 775731730136862
  7. Carlos Navarro, MDLeague City, TX 775731447522867
  8. Osarhiemen Omwanghe, MDLeague City, TX 775731164879474

Common questions

What is Cindy Lyou Chan, M.D.'s NPI number?

Cindy Lyou Chan, M.D.'s National Provider Identifier (NPI) is 1154588705, issued on May 21, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Cindy Lyou Chan, M.D. located?

The NPPES record lists a practice address at 2660 Gulf Fwy S Ste 6, League City, TX, 77573. Phone: (832) 505-2250. Providers update this record themselves, so call before visiting.

How can I verify Cindy Lyou Chan, M.D.'s license?

NPPES lists Texas license number P0087, 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 Cindy Lyou Chan, M.D. prescribe under Medicare Part D?

In 2024, Cindy Lyou Chan, M.D. had 5,897 Medicare Part D claims for 377 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Cindy Lyou Chan, M.D.'s MIPS final score?

The 2023 MIPS final score is 75 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.