NPPES file of Aug 9, 2026

Adrian Jun Yen Ng

Anesthesiology Physician · Santa Ana, CA

Adrian Jun Yen Ng is an anesthesiology physician with a practice address in Santa Ana, California, and NPI 1972044246, issued on Mar 20, 2017. Check the license (California A157053, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1972044246
Name
Adrian Jun Yen Ng
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
A157053 CA
Self-reported in NPPES; status is on the state search
Practice location
400 N Tustin Ave Ste 400, Santa Ana, CA 92705
Phone
(714) 619-5383
Enumerated
Mar 20, 2017
Record last updated
Aug 9, 2022
Fax
(714) 619-5396
Medicare enrollment
Enrolled (PECOS I20210712003858); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →

Also registered at 400 N Tustin Ave Ste 400

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Craig FlathAnesthesiology Physician1578094199
  2. Stanley Hoang, M.D.Anesthesiology Physician1922392679
  3. Gene Jang, M.D.Anesthesiology Physician1689107823
  4. Clifton LeeAnesthesiology Physician1770225864
  5. Yuchen LiuAnesthesiology Physician1710366059
  6. Jerimarie PasiliaoAnesthesiology Physician1659803906

Verify Adrian Jun Yen Ng in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A157053    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Allied Anesthesia Medical Group IncUpland, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Adrian Jun Yen Ng among 7,571 anesthesiology physician records in California

Adrian Jun Yen Ng is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 83% of them.

  • NPI issued2017 · 83% of these records are older, 14% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2017 · median 2006 among the 4,868 with a school on file
  • Record last updated2022 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in California

There are 7,571 anesthesiology physician records in California.

All 7,571 in California → Every provider in Santa Ana → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Omar Chowdhry, D.O.Santa Ana, CA 927051972735074
  2. Catherine Chung, MDSanta Ana, CA 927051205820586
  3. Jennifer Engstrom, MDSanta Ana, CA 927051619050119
  4. Melisa Erick, MDSanta Ana, CA 927051700921442
  5. Adam Helberg, MDSanta Ana, CA 927051336133636
  6. Stanley Hoang, M.D.Santa Ana, CA 927051922392679
  7. Robert Hoo, MDSanta Ana, CA 927051952496218
  8. Ji-Guang Jin, MDSanta Ana, CA 927051053305359

Common questions

What is Adrian Jun Yen Ng's NPI number?

Adrian Jun Yen Ng's National Provider Identifier (NPI) is 1972044246, issued on Mar 20, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Adrian Jun Yen Ng located?

The NPPES record lists a practice address at 400 N Tustin Ave Ste 400, Santa Ana, CA, 92705. Phone: (714) 619-5383. Providers update this record themselves, so call before visiting.

How can I verify Adrian Jun Yen Ng's license?

NPPES lists California license number A157053, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.