Julio Castillo, MD
Pediatrics Physician · Prosper, TX
Julio Castillo, MD is a pediatrics physician with a practice address in Prosper, Texas, and NPI 1417989203, issued on Jul 6, 2006. Check the license (Texas P4292, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Julio Castillo
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- P4292 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4100 W University Dr, Prosper, TX 75078
- Phone
- (945) 204-4100
- Enumerated
- Jul 6, 2006
- Entity
- Type 1 · individual
Also registered at 4100 W University Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew Boulos, M.D.Pediatric Emergency Medicine (Pediatrics) Physician1922419407
- Kristy Bybee, DOPediatrics Physician1467774943
- Kylie Clay, CPNP-ACPediatric Nurse Practitioner1831852581
- Natalie Davis, FNPFamily Nurse Practitioner1851029169
- Carlos Espada, CPNPPediatric Registered Nurse1922770809
- Eric Friedrich, D.O.Pediatric Emergency Medicine (Pediatrics) Physician1679921019
Verify Julio Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P4292Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
97% fewer Medicare Part D claims than the average pediatrics physician in 2024
28 Medicare Part D claims, against an average of 818 among the 8,211 providers of this specialty who prescribed in Part D.
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.
30 pediatrics physician records list a Prosper practice address
They are 30 of the 800 NPPES records with a Prosper practice address, and 6,165 pediatrics physician records in Texas.
All 30 in Prosper → All 6,165 in Texas → Every provider in Prosper →
Other pediatrics physician records in Texas
- Mehreen Abbas, MDCorpus Christi, TX1740850767
- Rashida Abbas, M.D.Cypress, TX1740222371
- Umair Abbas, M.D.Corpus Christi, TX1417335654
- James Abbott, MDWebster, TX1518065846
- Khuzam Abdalla, M.DAbilene, TX1174769137
- Waleed AbdelhafezAustin, TX1801230073
- Ahmed Abdin, M.DHouston, TX1427481449
- Jareatha Abdul-Raheem, MDJbsa Lackland, TX1790322485
- Khadijah Abdurrazaq, M.D, FAAPMidland, TX1336304120
- Christopher Abel, M.D.Dallas, TX1841299484
Common questions
What is Julio Castillo, MD's NPI number?
Julio Castillo, MD's National Provider Identifier (NPI) is 1417989203, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Julio Castillo, MD located?
The NPPES record lists a practice address at 4100 W University Dr, Prosper, TX, 75078. Phone: (945) 204-4100. Providers update this record themselves, so call before visiting.
How can I verify Julio Castillo, MD's license?
NPPES lists Texas license number P4292, 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 Julio Castillo, MD prescribe under Medicare Part D?
In 2024, Julio Castillo, MD had 28 Medicare Part D claims; the average among pediatrics physician prescribers was 818. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.