Peter Liao, MD, PHD
Psychiatry Physician · Los Angeles, CA
Peter Liao, MD, PHD is a psychiatry physician with a practice address in Los Angeles, California, and NPI 1790312189, issued on Mar 25, 2020. Check the license (California A178622, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Peter Liao
- Credential
- MD, PHD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A178622 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N State Street, Los Angeles, CA 90033
- Phone
- (323) 409-1000
- Enumerated
- Mar 25, 2020
- Record last updated
- Aug 29, 2023
- Medicare enrollment
- Enrolled (PECOS I20240709003377); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1200 N State Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter Liao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A178622Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatry physician in 2024
27 Medicare Part D claims for 11 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Alameda Health SystemCastro Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter Liao among 8,673 psychiatry physician records in California
Peter Liao, MD, PHD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 87% of them.
- NPI issued2020 · 87% of these records are older, 9% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2020 · median 2005 among the 3,295 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
987 psychiatry physician records list a practice address in Los Angeles
They are 987 of the 69,537 NPPES records with a practice address in Los Angeles, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Los Angeles → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Ikhlas Akra, M.D.Los Angeles, CA 900331992741979
- David Baron, DOLos Angeles, CA 900331417945486
- Jaskanwar Batra, M.D.Los Angeles, CA 900331033183926
- William Bondareff, MD,PHDLos Angeles, CA 900331225074156
- Timothy Botello, MDLos Angeles, CA 900331477581346
- Lawrence Gross, M.D.Los Angeles, CA 900331427032366
- Michael Hernandez, M.D.Los Angeles, CA 900331508865023
- Thomas Hicklin, MDLos Angeles, CA 900331548284383
Common questions
What is Peter Liao, MD, PHD's NPI number?
Peter Liao, MD, PHD's National Provider Identifier (NPI) is 1790312189, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Peter Liao, MD, PHD located?
The NPPES record lists a practice address at 1200 N State Street, Los Angeles, CA, 90033. Phone: (323) 409-1000. Providers update this record themselves, so call before visiting.
How can I verify Peter Liao, MD, PHD's license?
NPPES lists California license number A178622, 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 Peter Liao, MD, PHD prescribe under Medicare Part D?
In 2024, Peter Liao, MD, PHD had 27 Medicare Part D claims for 11 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.