NPPES file of Aug 9, 2026

Collins Liu, MD

Behavioral Neurology & Neuropsychiatry Physician · San Diego, CA

Collins Liu, MD is a behavioral neurology & neuropsychiatry physician with a practice address in San Diego, California, and NPI 1851547459, issued on Aug 14, 2008. Check the license (California A113042, 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
1851547459
Name
Collins Liu
Credential
MD
Primary taxonomy
Behavioral Neurology & Neuropsychiatry Physician 2084B0040X
License number
A113042 CA
Self-reported in NPPES; status is on the state search
Practice location
11120 E Ocean Air Dr Ste 101-88, San Diego, CA 92130
Phone
(619) 630-8676
Enumerated
Aug 14, 2008
Record last updated
May 15, 2024
Medicare enrollment
Enrolled (PECOS I20240510000451); accepts Medicare assignment
Medical or professional school
New York Medical College, 2008
Telehealth
Offers telehealth (CMS)
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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Verify Collins Liu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A113042
    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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3% more Medicare Part D claims than the average behavioral neurology & neuropsychiatry physician in 2024

846 Medicare Part D claims for 124 beneficiaries, against an average of 823 among the 148 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.

  1. Collins Liu846
  2. Specialty average823

Most prescribed

  1. Donepezil Hcl158 claims
  2. Rivastigmine85 claims
  3. Trazodone Hcl76 claims
  4. Memantine Hcl73 claims
  5. Gabapentin65 claims
  6. Escitalopram Oxalate41 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: $3,920.00

1 payment: consulting fee; the largest payer was Eisai Inc. The 68 providers of this specialty with any payment received $7,734.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Collins Liu$3,920.00
  2. Specialty average$7,734.84

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 3 group practices

  1. ON Demand Neurology OF CA PCBakersfield, CA
  2. ON Demand Neurology PAAustin, TX
  3. Usc Care Medical Group IncLos Angeles, CA

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

Collins Liu among 35 behavioral neurology & neuropsychiatry physician records in California

Collins Liu, MD is one of 35 behavioral neurology & neuropsychiatry 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 2008, is newer than 29% of them.

  • NPI issued2008 · 29% of these records are older, 63% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 54% of these records are
  • Graduated2008 · median 2002 among the 19 with a school on file
  • Record last updated2024 · 31% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084B0040X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Behavioral Neurology & Neuropsychiatry Physician providers in California

There are 35 behavioral neurology & neuropsychiatry physician records in California.

The 8 behavioral neurology & neuropsychiatry physician records with the nearest ZIP codes

  1. Nihal De Silva, MDSan Diego, CA 921301003834789
  2. Gabriel Leger, MD CMSan Diego, CA 921211720367899
  3. Oluseyi Awodele, M.D, M.SCarlsbad, CA 920091235572983
  4. Peter Wagner, M.D.Rancho Mirage, CA 922701962403774
  5. Zeeruk Iqbal, MDMoreno Valley, CA 925551417792227
  6. Monte BuschsbaumLaguna Beach, CA 926511861904401
  7. Michael Frazier, M.D.Westminster, CA 926831225396591
  8. Brian Hitt, M.D., PH.D.Irvine, CA 926971225449796

Common questions

What is Collins Liu, MD's NPI number?

Collins Liu, MD's National Provider Identifier (NPI) is 1851547459, issued on Aug 14, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Collins Liu, MD located?

The NPPES record lists a practice address at 11120 E Ocean Air Dr Ste 101-88, San Diego, CA, 92130. Phone: (619) 630-8676. Providers update this record themselves, so call before visiting.

How can I verify Collins Liu, MD's license?

NPPES lists California license number A113042, 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 Collins Liu, MD prescribe under Medicare Part D?

In 2024, Collins Liu, MD had 846 Medicare Part D claims for 124 beneficiaries; the average among behavioral neurology & neuropsychiatry physician prescribers was 823. 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.