John Louis Castiglia, M.D.
Diagnostic Radiology Physician · Scottsdale, AZ
John Louis Castiglia, M.D. is a diagnostic radiology physician with a practice address in Scottsdale, Arizona, and NPI 1265860449, issued on Oct 24, 2013. Check the license (Arizona #16975, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Louis Castiglia
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- #16975 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 5995 N. 78TH Street, Scottsdale, AZ 85250
- Phone
- (925) 979-8538
- Enumerated
- Oct 24, 2013
- Record last updated
- Oct 24, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 869 in Arizona → Look up another NPI →
Verify John Louis Castiglia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license #16975Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024
49 Medicare Part D claims, against an average of 51 among the 2,711 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.
John Louis Castiglia among 869 diagnostic radiology physician records in Arizona
John Louis Castiglia, M.D. is one of 869 diagnostic radiology physician records with a practice address in Arizona. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 75% of them.
- NPI issued2013 · 75% of these records are older, 23% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2013 · 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 2085R0202X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
196 diagnostic radiology physician records list a practice address in Scottsdale
They are 196 of the 11,008 NPPES records with a practice address in Scottsdale, and 869 diagnostic radiology physician records in Arizona.
All 869 in Arizona → Every provider in Scottsdale → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Ron Ayanzen, M.D.Scottsdale, AZ 852511013901586
- William Horsley, MDScottsdale, AZ 852511457340416
- Kenneth Keller, MDScottsdale, AZ 852511891781886
- Ronald Korn, MD, PHDScottsdale, AZ 852511588653547
- Eric Kovalsky, MDScottsdale, AZ 852511194714154
- Mark Kuo, MDScottsdale, AZ 852511760471700
- Jonathan Levy, MDScottsdale, AZ 852511104815166
- Daniel Maki, MDScottsdale, AZ 852511093704058
Common questions
What is John Louis Castiglia, M.D.'s NPI number?
John Louis Castiglia, M.D.'s National Provider Identifier (NPI) is 1265860449, issued on Oct 24, 2013. An NPI identifies a provider in billing; it is not a license.
Where is John Louis Castiglia, M.D. located?
The NPPES record lists a practice address at 5995 N. 78TH Street, Scottsdale, AZ, 85250. Phone: (925) 979-8538. Providers update this record themselves, so call before visiting.
How can I verify John Louis Castiglia, M.D.'s license?
NPPES lists Arizona license number #16975, 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 John Louis Castiglia, M.D. prescribe under Medicare Part D?
In 2024, John Louis Castiglia, M.D. had 49 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. 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.