Myrna Ayde Castelazo, M.D.
Diagnostic Radiology Physician · Pleasanton, CA
Myrna Ayde Castelazo, M.D. is a diagnostic radiology physician with a practice address in Pleasanton, California, and NPI 1407290513, issued on Apr 19, 2013. Check the license (California A133913, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Myrna Ayde Castelazo
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A133913 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5555 W Las Positas Blvd, Pleasanton, CA 94588
- Phone
- (925) 416-6789
- Enumerated
- Apr 19, 2013
- Record last updated
- May 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20180514000617); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2013
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 5555 W Las Positas Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Abinav Baweja, MDMedical Oncology Physician1770961575
- Brooke BettsPharmacist1962178491
- Ryan Cates, PA-CPhysician Assistant1053782920
Verify Myrna Ayde Castelazo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A133913Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $25.95
1 payment: food and beverage; the largest payer was Genmab U.S., Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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.
2 hospitals and group practices
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
- Southwest Medical Imaging PAPalo Alto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Myrna Ayde Castelazo among 4,500 diagnostic radiology physician records in California
Myrna Ayde Castelazo, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% 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 76% of them.
- NPI issued2013 · 76% of these records are older, 22% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2013 · median 2004 among the 3,130 with a school on file
- Record last updated2025 · 60% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Pleasanton → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Ashley Altman, MDPleasanton, CA 945881649697947
- Brooke Caldwell, M.D.Pleasanton, CA 945881134176969
- Ralph Ho, MDPleasanton, CA 945881548363070
- Priscilla Wong, MDPleasanton, CA 945881417909722
- Michael Brodsky, M.D.Vallejo, CA 945891497781348
- Dean Genes, M.D.Vallejo, CA 945891194790972
- Susan Hermanson, MDVallejo, CA 945891295813038
- Christopher Kagan, MDVallejo, CA 945891588742316
Common questions
What is Myrna Ayde Castelazo, M.D.'s NPI number?
Myrna Ayde Castelazo, M.D.'s National Provider Identifier (NPI) is 1407290513, issued on Apr 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Myrna Ayde Castelazo, M.D. located?
The NPPES record lists a practice address at 5555 W Las Positas Blvd, Pleasanton, CA, 94588. Phone: (925) 416-6789. Providers update this record themselves, so call before visiting.
How can I verify Myrna Ayde Castelazo, M.D.'s license?
NPPES lists California license number A133913, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.