Elizabeth Y. Nghiem, M.D.
Infectious Disease Physician · Fountain Valley, CA
Elizabeth Y. Nghiem, M.D. is an infectious disease physician with a practice address in Fountain Valley, California, and NPI 1083626212, issued on Aug 13, 2006. Check the license (California A62911, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Elizabeth Y. Nghiem
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A62911 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11160 Warner Ave, Fountain Valley, CA 92708
- Phone
- (714) 751-7002
- Enumerated
- Aug 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (714) 751-9340
- Medicaid ID
- 00A629110 CA
- Medicare enrollment
- Enrolled (PECOS I20101216000232); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 11160 Warner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Steven Chan, D.D.S.General Practice Dentistry1396748240
- Philip Chin, M.D.Specialist1548224629
Verify Elizabeth Y. Nghiem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A62911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average infectious disease physician in 2024
272 Medicare Part D claims for 72 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Ertapenem31 claims
- Tobramycin Sulfate23 claims
- Fluconazole18 claims
- Ceftriaxone17 claims
- Sodium Chloride15 claims
- Cephalexin13 claims
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.
Industry payments in 2024: $266.35
4 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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.
Elizabeth Y. Nghiem among 1,119 infectious disease physician records in California
Elizabeth Y. Nghiem, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1995 · median 2003 among the 735 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Fountain Valley → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Javier Davila, M.D.Fountain Valley, CA 927081548272768
- Philip Goldstein, MDFountain Valley, CA 927081316353758
- Sujata Lalla-Reddy, M.D.Fountain Valley, CA 927081891711909
- John Lok, M.D.Fountain Valley, CA 927081992713028
- Dalilah Restrepo, MDFountain Valley, CA 927081396816393
- Marvin Reyes, M.D.Fountain Valley, CA 927081356378160
- Tracy Zivin-Tutela, MDFountain Valley, CA 927081841230646
- Ronald Sherman, MDSanta Ana, CA 927061295903631
Common questions
What is Elizabeth Y. Nghiem, M.D.'s NPI number?
Elizabeth Y. Nghiem, M.D.'s National Provider Identifier (NPI) is 1083626212, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Y. Nghiem, M.D. located?
The NPPES record lists a practice address at 11160 Warner Ave, Fountain Valley, CA, 92708. Phone: (714) 751-7002. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Y. Nghiem, M.D.'s license?
NPPES lists California license number A62911, 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.
How much does Elizabeth Y. Nghiem, M.D. prescribe under Medicare Part D?
In 2024, Elizabeth Y. Nghiem, M.D. had 272 Medicare Part D claims for 72 beneficiaries; the average among infectious disease physician prescribers was 689. 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.