John J. Tierney, M.D.
Student in an Organized Health Care Education/Training Program · Los Angeles, CA
John J. Tierney, M.D. is a student in an organized health care education/training program with a practice address in Los Angeles, California, and NPI 1952595076, issued on Aug 31, 2007. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John J. Tierney
- Credential
- M.D.
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 10543 Ayres Avenue, Los Angeles, CA 90064
- Phone
- (949) 838-4883
- Enumerated
- Aug 31, 2007
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100419000732); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 40,652 in California → Look up another NPI →
Verify John J. Tierney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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 one group practice
- Southern California Permanente Medical GroupGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John J. Tierney among 40,652 student in an organized health care education/training program records in California
John J. Tierney, M.D. is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than under 1% of them.
- NPI issued2007 · under 1% of these records are older, 99% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 6% of these records are
- Graduated2006 · median 2017 among the 2,409 with a school on file
- Record last updated2021 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6,770 student in an organized health care education/training program records list a practice address in Los Angeles
They are 6,770 of the 69,537 NPPES records with a practice address in Los Angeles, and 40,652 student in an organized health care education/training program records in California.
All 40,652 in California → Every provider in Los Angeles → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Sanghyun AnLos Angeles, CA 900641821613472
- Adarsh Babu, MBBS, MRCP, PHD(C)Los Angeles, CA 900641417465048
- Sophia DanielsLos Angeles, CA 900641043093990
- Ramona FantinoLos Angeles, CA 900641215191515
- Christopher Norris, BCBA, LAADC, ICAADCLos Angeles, CA 900641962043851
- Sarah SchusterLos Angeles, CA 900641811617699
- Caleb SpiroLos Angeles, CA 900641366058901
- David Alvarez, PALos Angeles, CA 900651538001375
Common questions
What is John J. Tierney, M.D.'s NPI number?
John J. Tierney, M.D.'s National Provider Identifier (NPI) is 1952595076, issued on Aug 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John J. Tierney, M.D. located?
The NPPES record lists a practice address at 10543 Ayres Avenue, Los Angeles, CA, 90064. Phone: (949) 838-4883. Providers update this record themselves, so call before visiting.
How can I verify John J. Tierney, M.D.'s license?
Search the California board that licenses this profession; the NPPES record confirms identity 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.