Brian S. Castillo, M.D.
Anatomic Pathology & Clinical Pathology Physician · Houston, TX
Brian S. Castillo, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Houston, Texas, and NPI 1528224151, issued on Aug 4, 2008. Check the license (Texas Q4375, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Brian S. Castillo
- Credential
- M.D.
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- Q4375 TX
Self-reported in NPPES; status is on the state search - Practice location
- 6431 Fannin St, Houston, TX 77030
- Phone
- (713) 500-5301
- Enumerated
- Aug 4, 2008
- Record last updated
- Aug 3, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150729009589); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 2008
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,424 in Texas → Look up another NPI →
Also registered at 6431 Fannin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ahmad AbdelhadiStudent in an Organized Health Care Education/Training Program1073453296
- Zayna AbdullaStudent in an Organized Health Care Education/Training Program1245030337
- Yaman Abdullah, M.D.Internal Medicine Physician1134461619
- Elizabeth Abels, MDStudent in an Organized Health Care Education/Training Program1417516881
- Jessica Abhulimhen, MDInternal Medicine Physician1639665136
- Andrew Abikhaled, MD CANDIDATEStudent in an Organized Health Care Education/Training Program1699574335
Verify Brian S. Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q4375Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 95.5 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).
Bills Medicare through one group practice
- Methodist Pathology Associates PLLCSugar Land, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian S. Castillo among 1,424 anatomic pathology & clinical pathology physician records in Texas
Brian S. Castillo, M.D. is one of 1,424 anatomic pathology & clinical pathology physician records with a practice address in Texas. 65% 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 56% of them.
- NPI issued2008 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2008 · median 2001 among the 864 with a school on file
- Record last updated2015 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Texas
There are 1,424 anatomic pathology & clinical pathology physician records in Texas.
All 1,424 in Texas → Every provider in Houston → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Amin Alrahwan, M.D.Houston, TX 770301306827381
- Gustavo Ayala, M.D.Houston, TX 770301992709356
- Diego Fiorito, M.D.Houston, TX 770301184629586
- Jerry Goodman, M.D.Houston, TX 770301770553877
- Suyang Hao, MDHouston, TX 770301750371910
- Joseph Khoury, MDHouston, TX 770301013910108
- Pulin Kothari, M.D.Houston, TX 770301730184136
- Barbara Lines, MDHouston, TX 770301366447690
Common questions
What is Brian S. Castillo, M.D.'s NPI number?
Brian S. Castillo, M.D.'s National Provider Identifier (NPI) is 1528224151, issued on Aug 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Brian S. Castillo, M.D. located?
The NPPES record lists a practice address at 6431 Fannin St, Houston, TX, 77030. Phone: (713) 500-5301. Providers update this record themselves, so call before visiting.
How can I verify Brian S. Castillo, M.D.'s license?
NPPES lists Texas license number Q4375, 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.
What is Brian S. Castillo, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.5 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.