Julio Cesar Castillo, MD
Pediatrics Physician · Prosper, TX
Julio Cesar 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 Cesar 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
- Record last updated
- Feb 23, 2023
- Fax
- (682) 885-1903
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 5,641 in Texas → Look up another NPI →
Also registered at 4100 W University Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kylie Clay, CPNP-ACAcute Care Nurse Practitioner1831852581
- Natalie Davis, FNPFamily Nurse Practitioner1851029169
- Carlos Espada, CPNPAcute Care Nurse Practitioner1922770809
- Eric Friedrich, D.O.Pediatric Emergency Medicine (Pediatrics) Physician1679921019
Verify Julio Cesar 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
93% fewer Medicare Part D claims than the average pediatrics physician in 2024
28 Medicare Part D claims, against an average of 375 among the 5,609 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.
Julio Cesar Castillo among 5,641 pediatrics physician records in Texas
Julio Cesar Castillo, MD is one of 5,641 pediatrics physician records with a practice address in Texas. 47% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 57% newer
- In a Medicare fileYes · 47% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2023 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 pediatrics physician records list a practice address in Prosper
They are 21 of the 800 NPPES records with a practice address in Prosper, and 5,641 pediatrics physician records in Texas.
All 5,641 in Texas → Every provider in Prosper → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Ayotunde Adeyeye, MDProsper, TX 750781821431974
- Soumya Billa, MDProsper, TX 750781598106437
- Scott Chowning, MDProsper, TX 750781366602344
- Emmette Clark, MDProsper, TX 750781932176625
- Ghada Elhaj, MDProsper, TX 750781144309519
- Halley Hogan, M.D,Prosper, TX 750781396038881
- Audrey Johnson, M.D.Prosper, TX 750781821230392
- Kofoworola Kuboye, M.DProsper, TX 750781225298011
Common questions
What is Julio Cesar Castillo, MD's NPI number?
Julio Cesar 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 Cesar 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 Cesar 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 Cesar Castillo, MD prescribe under Medicare Part D?
In 2024, Julio Cesar Castillo, MD had 28 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.