Tien Trong Nguyen, MD
Neurological Surgery Physician · Fountain Valley, CA
Tien Trong Nguyen, MD is a neurological surgery physician with a practice address in Fountain Valley, California, and NPI 1356385025, issued on Jun 15, 2006. Check the license (California G81962, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tien Trong Nguyen
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- G81962 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11190 Warner Ave, Fountain Valley, CA 92708
- Phone
- (714) 433-2000
- Enumerated
- Jun 15, 2006
- Record last updated
- Feb 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (714) 433-2901
- Medicaid ID
- 00G819620 CA
- Medicare enrollment
- Enrolled (PECOS I20090710000520); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1993
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 11190 Warner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Karen Jones, MDPrescribing (Medical) Psychologist1992914782
- Shawna Jones, P.A.-CPhysician Assistant1447451786
- Donald Karon, M.D.Radiation Oncology Physician1982668216
Verify Tien Trong Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81962Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average neurological surgery physician in 2024
310 Medicare Part D claims for 131 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. 84 claims were for opioids.
Most prescribed
- Gabapentin152 claims
- Tramadol Hcl38 claims
- Acetaminophen-Codeine26 claims
- Hydrocodone-Acetaminophen19 claims
- Pregabalin12 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $12,923.20
40 payments; by number, the most common kind was food and beverage; the largest payer was Biogennix, LLC. The 5,377 providers of this specialty with any payment received $14,925.58 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
- Tien T Nguyen M.D. Inc.Fountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tien Trong Nguyen among 929 neurological surgery physician records in California
Tien Trong Nguyen, MD is one of 929 neurological surgery physician records with a practice address in California. 77% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1993 · median 2005 among the 612 with a school on file
- Record last updated2013 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in Fountain Valley → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Devin Binder, MDFountain Valley, CA 927081992804819
- Onechang Lee, M.D.Fountain Valley, CA 927081881838662
- Peyman TabriziSanta Ana, CA 927071154362499
- Bijan Zardouz, M.D.Santa Ana, CA 927071679621726
- Andrew Schreiber, MDSanta Ana, CA 927051679662852
- Keun-Young Kim, M.D.Mission Viejo, CA 926911659577286
- Chiedozie Nwagwu, MDMission Viejo, CA 926911669552808
- Sylvain Palmer, MDMission Viejo, CA 926911508971912
Common questions
What is Tien Trong Nguyen, MD's NPI number?
Tien Trong Nguyen, MD's National Provider Identifier (NPI) is 1356385025, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tien Trong Nguyen, MD located?
The NPPES record lists a practice address at 11190 Warner Ave, Fountain Valley, CA, 92708. Phone: (714) 433-2000. Providers update this record themselves, so call before visiting.
How can I verify Tien Trong Nguyen, MD's license?
NPPES lists California license number G81962, 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 Tien Trong Nguyen, MD prescribe under Medicare Part D?
In 2024, Tien Trong Nguyen, MD had 310 Medicare Part D claims for 131 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is Tien Trong Nguyen, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.