Robert Manuel Castillo, MD
General Practice Physician · Houston, TX
Robert Manuel Castillo, MD is a general practice physician with a practice address in Houston, Texas, and NPI 1396799128, issued on May 19, 2006. Check the license (Texas G1817, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert Manuel Castillo
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- G1817 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4302 Center Street, Houston, TX 77007
- Phone
- (713) 869-4631
- Enumerated
- May 19, 2006
- Record last updated
- Dec 23, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 162706901 TX
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,062 in Texas → Look up another NPI →
Verify Robert Manuel Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license G1817Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average general practice physician in 2024
44 Medicare Part D claims for 16 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Farxiga11 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.
Robert Manuel Castillo among 1,062 general practice physician records in Texas
Robert Manuel Castillo, MD is one of 1,062 general practice physician records with a practice address in Texas. 44% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 75% newer
- In a Medicare fileYes · 44% of these records are
- In the CMS Doctors and Clinicians fileNo · 21% of these records are
- Record last updated2009 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Texas
There are 1,062 general practice physician records in Texas.
All 1,062 in Texas → Every provider in Houston → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Vivienne Bryan, MDHouston, TX 770071558665117
- Tran Le, MDHouston, TX 770071194212258
- Trenton Morgan, MDHouston, TX 770071992294250
- Zachary Franco, MD PHD MPHHouston, TX 770061700042330
- Manuel Garcia Galdo, MDHouston, TX 770081366008625
- Donald Hanser, M.D.Houston, TX 770081982611505
- Michael Hoffmann, MDHouston, TX 770081255624235
- John Nemecek, MDHouston, TX 770061629150487
Common questions
What is Robert Manuel Castillo, MD's NPI number?
Robert Manuel Castillo, MD's National Provider Identifier (NPI) is 1396799128, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Manuel Castillo, MD located?
The NPPES record lists a practice address at 4302 Center Street, Houston, TX, 77007. Phone: (713) 869-4631. Providers update this record themselves, so call before visiting.
How can I verify Robert Manuel Castillo, MD's license?
NPPES lists Texas license number G1817, 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 Robert Manuel Castillo, MD prescribe under Medicare Part D?
In 2024, Robert Manuel Castillo, MD had 44 Medicare Part D claims for 16 beneficiaries; the average among general practice physician prescribers was 3,030. 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.