Lena B. Nguyen, DO
Obstetrics & Gynecology Physician · Fountain Valley, CA
Lena B. Nguyen, DO is an obstetrics & gynecology physician with a practice address in Fountain Valley, California, and NPI 1467741728, issued on Apr 6, 2011. Check the license (California 20A13833, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lena B. Nguyen
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20A13833 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18035 Brookhurst St Ste 2100, Fountain Valley, CA 92708
- Phone
- (657) 241-9090
- Enumerated
- Apr 6, 2011
- Record last updated
- Apr 30, 2025
- Fax
- (714) 665-4603
- Medicare enrollment
- Enrolled (PECOS I20150706002725); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 18035 Brookhurst St Ste 2100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erick Argueta, MDGastroenterology Physician1083144638
- Sarah Bartulis, CNMAdvanced Practice Midwife1639554678
- Trisha Chaudhury, DOObstetrics & Gynecology Physician1316688815
- Nancy Han, M.D.Gastroenterology Physician1609055300
- Lizhou Huang, M.D.Gastroenterology Physician1396088977
- Vincent Kao, DOGastroenterology Physician1649570268
Verify Lena B. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A13833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
120 Medicare Part D claims for 41 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Triamcinolone Acetonide28 claims
- Estradiol24 claims
- Progesterone15 claims
- Estradiol (Twice Weekly)11 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: $524.52
20 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Bills Medicare through one group practice
- Memorialcare Medical FoundationFountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lena B. Nguyen among 5,088 obstetrics & gynecology physician records in California
Lena B. Nguyen, DO is one of 5,088 obstetrics & gynecology 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 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2011 · median 2004 among the 2,700 with a school on file
- Record last updated2025 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 obstetrics & gynecology physician records list a practice address in Fountain Valley
They are 23 of the 2,190 NPPES records with a practice address in Fountain Valley, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Fountain Valley → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Gerardo Bustillo, M.D.Fountain Valley, CA 927081972631786
- Cynthia Cork, M.D.Fountain Valley, CA 927081134229602
- Ellen Fraser, M.D.Fountain Valley, CA 927081275598443
- Jamie Kim, M.D.Fountain Valley, CA 927081225187388
- Carol Levi, M.D.Fountain Valley, CA 927081497706907
- Minal Mehta, M.D.Fountain Valley, CA 927081780787580
- Sunita Moola, MDFountain Valley, CA 927081770770695
- Krystal Pham, MDFountain Valley, CA 927081710001763
Common questions
What is Lena B. Nguyen, DO's NPI number?
Lena B. Nguyen, DO's National Provider Identifier (NPI) is 1467741728, issued on Apr 6, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Lena B. Nguyen, DO located?
The NPPES record lists a practice address at 18035 Brookhurst St Ste 2100, Fountain Valley, CA, 92708. Phone: (657) 241-9090. Providers update this record themselves, so call before visiting.
How can I verify Lena B. Nguyen, DO's license?
NPPES lists California license number 20A13833, 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 Lena B. Nguyen, DO prescribe under Medicare Part D?
In 2024, Lena B. Nguyen, DO had 120 Medicare Part D claims for 41 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.