Emma Janet Castillo, M.D.
Gastroenterology Physician · Chandler, AZ
Emma Janet Castillo, M.D. is a gastroenterology physician with a practice address in Chandler, Arizona, and NPI 1598730053, issued on Feb 20, 2006. Check the license (Arizona 29015, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Emma Janet Castillo
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 29015 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 600 S Dobson RD Ste A1, Chandler, AZ 85224
- Phone
- (480) 786-6655
- Enumerated
- Feb 20, 2006
- Record last updated
- Aug 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (480) 786-6996
- Medicaid ID
- 924200 AZ
- Medicare enrollment
- Enrolled (PECOS I20050722000595); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 403 in Arizona → Look up another NPI →
Also registered at 600 S Dobson RD Ste A1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Slade, FNPFamily Nurse Practitioner1194062810
Verify Emma Janet Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 29015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average gastroenterology physician in 2024
601 Medicare Part D claims for 249 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Pantoprazole Sodium233 claims
- Famotidine86 claims
- Sod Sulf-Potass Sulf-Mag Sulf76 claims
- Omeprazole31 claims
- Gavilyte-G30 claims
- Sucralfate19 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.
Industry payments in 2024: $580.92
6 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Honorhealth AmbulatoryScottsdale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emma Janet Castillo among 403 gastroenterology physician records in Arizona
Emma Janet Castillo, M.D. is one of 403 gastroenterology physician records with a practice address in Arizona. 84% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 41% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1998 · median 2001 among the 295 with a school on file
- Record last updated2021 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Arizona
There are 403 gastroenterology physician records in Arizona.
All 403 in Arizona → Every provider in Chandler → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Sanjay Ahluwalia, M.D.Chandler, AZ 852241104807882
- Manish Amin, MDChandler, AZ 852241225093271
- George Bracher, M.D.Chandler, AZ 852241669444006
- James Burgess, MDChandler, AZ 852241235118589
- Brendan Levy, M.D.Chandler, AZ 852241548260474
- Tarun Mullick, M.D.Chandler, AZ 852241912906462
- Gregory Nguyenduc, M.D.Chandler, AZ 852241326016239
- Sandeep Patel, M.D.Chandler, AZ 852241427094218
Common questions
What is Emma Janet Castillo, M.D.'s NPI number?
Emma Janet Castillo, M.D.'s National Provider Identifier (NPI) is 1598730053, issued on Feb 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Emma Janet Castillo, M.D. located?
The NPPES record lists a practice address at 600 S Dobson RD Ste A1, Chandler, AZ, 85224. Phone: (480) 786-6655. Providers update this record themselves, so call before visiting.
How can I verify Emma Janet Castillo, M.D.'s license?
NPPES lists Arizona license number 29015, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Emma Janet Castillo, M.D. prescribe under Medicare Part D?
In 2024, Emma Janet Castillo, M.D. had 601 Medicare Part D claims for 249 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.