Sigfredo Villarin Ayala
Trauma Surgery Physician · Northridge, CA
Sigfredo Villarin Ayala is a trauma surgery physician with a practice address in Northridge, California, and NPI 1467909044, issued on Sep 1, 2016. Check the license (California 202835, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sigfredo Villarin Ayala
- Primary taxonomy
- Trauma Surgery Physician 2086S0127X
- License number
- 202835 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18300 Roscoe Blvd, Northridge, CA 91325
- Phone
- (818) 885-8500
- Enumerated
- Sep 1, 2016
- Record last updated
- Nov 21, 2025
- Medicare enrollment
- Enrolled (PECOS I20250730001155); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest trauma surgery physician records → All 146 in California → Look up another NPI →
Also registered at 18300 Roscoe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Abt, P.A.Physician Assistant1184670374
- Tara Adams-Clarke, DPTPhysical Therapist1902304033
- Norair Adjamian, DOSurgery Physician1538689021
- Shahla AldavoodiPsychiatric/Mental Health Nurse Practitioner1104328384
- Dominick AmparanoFamily Nurse Practitioner1023797321
- Esi AsamoahRegistered Nurse1558160515
Verify Sigfredo Villarin Ayala in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 202835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Compassionate Critical Care Group, Inc.Northridge, CA
- Northridge Trauma Surgeons Inc A Medical CorporationNorthridge, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sigfredo Villarin Ayala among 146 trauma surgery physician records in California
Sigfredo Villarin Ayala is one of 146 trauma surgery physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 86% of them.
- NPI issued2016 · 86% of these records are older, 10% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2018 · median 2007 among the 117 with a school on file
- Record last updated2025 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0127X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Trauma Surgery Physician providers in California
There are 146 trauma surgery physician records in California.
All 146 in California → Every provider in Northridge → Trauma Surgery Physician nationwide →
The 8 trauma surgery physician records with the nearest ZIP codes
- Joseph Karam, MDNorthridge, CA 913251922097054
- Boris Borazjani, M.D.,M.P.H.Mission Hills, CA 913451730356353
- Danielle Dabbs, DOMission Hills, CA 913451891999215
- David Hanpeter, MDMission Hills, CA 913451477583458
- Bradley Roth, MDMission Hills, CA 913451699709048
- Kaveh Najafi, D.O.Pasadena, CA 911051083906242
- Richard Vasak, M.D.Pasadena, CA 911051215213103
- Jerry Vlasak, M.D.Pasadena, CA 911051992749071
Common questions
What is Sigfredo Villarin Ayala's NPI number?
Sigfredo Villarin Ayala's National Provider Identifier (NPI) is 1467909044, issued on Sep 1, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Sigfredo Villarin Ayala located?
The NPPES record lists a practice address at 18300 Roscoe Blvd, Northridge, CA, 91325. Phone: (818) 885-8500. Providers update this record themselves, so call before visiting.
How can I verify Sigfredo Villarin Ayala's license?
NPPES lists California license number 202835, 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.