NPPES file of Aug 9, 2026

Tim Tien Lai, M.D.

Neurology Physician · Fountain Valley, CA

Tim Tien Lai, M.D. is a neurology physician with a practice address in Fountain Valley, California, and NPI 1295094324, issued on May 9, 2012. Check the license (California A128380, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295094324
Name
Tim Tien Lai
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
A128380 CA
Self-reported in NPPES; status is on the state search
Practice location
11100 Warner Ave, Fountain Valley, CA 92708
Phone
(714) 486-2521
Enumerated
May 9, 2012
Record last updated
Mar 29, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(714) 486-2613
Medicare enrollment
Enrolled (PECOS I20170626001486); accepts Medicare assignment
Medical or professional school
State University Of New York At Buffalo School Of Medicine, 2012
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 neurology physician records → All 2,339 in California → Look up another NPI →

Also registered at 11100 Warner Ave

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

  1. Reginald Abraham, M DThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1720042864
  2. Joel Berman, M.D.Surgery Physician1790724490
  3. Bao Bui, M.D.Cardiovascular Disease Physician1801099593
  4. Andrew Ceavatta, M.D.Dermatology Physician1164486965
  5. Maria Crosby, PTPhysical Therapist1891709739
  6. Himmet Dajee, MDSpecialist1124082730

Verify Tim Tien Lai in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A128380    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

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2.7 times the Medicare Part D claims of the average neurology physician in 2024

3,704 Medicare Part D claims for 546 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Tim Lai3,704
  2. Specialty average1,370

Most prescribed

  1. Donepezil Hcl541 claims
  2. Gabapentin469 claims
  3. Carbidopa-Levodopa428 claims
  4. Entacapone246 claims
  5. Memantine Hcl224 claims
  6. Levetiracetam181 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: $133.86

7 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tim Lai$133.86
  2. Specialty average$8,318.07

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

  1. Family Choice Aco IncWestminster, CA

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

Tim Tien Lai among 2,339 neurology physician records in California

Tim Tien Lai, M.D. is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 66% of them.

  • NPI issued2012 · 66% of these records are older, 31% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2012 · median 2006 among the 1,628 with a school on file
  • Record last updated2020 · 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 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

All 2,339 in California → Every provider in Fountain Valley → Neurology Physician nationwide →

The 8 neurology physician records with the nearest ZIP codes

  1. Martin Backman, M.D.Santa Ana, CA 927081699738385
  2. Abdullah Ibish, MDFountain Valley, CA 927081154783397
  3. Mehrdad Mahdad, M.D.Fountain Valley, CA 927081225092190
  4. Deepmala Nandanwar, M.D.Fountain Valley, CA 927081942685094
  5. Duke Phan, MDFountain Valley, CA 927081437352630
  6. Scott Shoemaker, MDFountain Valley, CA 927081881632784
  7. Daniel Truong, M.D.Fountain Valley, CA 927081992720916
  8. Kong Truong, M.D.Fountain Valley, CA 927081023329125

Common questions

What is Tim Tien Lai, M.D.'s NPI number?

Tim Tien Lai, M.D.'s National Provider Identifier (NPI) is 1295094324, issued on May 9, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Tim Tien Lai, M.D. located?

The NPPES record lists a practice address at 11100 Warner Ave, Fountain Valley, CA, 92708. Phone: (714) 486-2521. Providers update this record themselves, so call before visiting.

How can I verify Tim Tien Lai, M.D.'s license?

NPPES lists California license number A128380, 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 Tim Tien Lai, M.D. prescribe under Medicare Part D?

In 2024, Tim Tien Lai, M.D. had 3,704 Medicare Part D claims for 546 beneficiaries; the average among neurology physician prescribers was 1,370. 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.

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.