Otto Liao, M.D.
Allergy & Immunology Physician · Tustin, CA
Otto Liao, M.D. is an allergy & immunology physician with a practice address in Tustin, California, and NPI 1225042674, issued on Jul 28, 2006. Check the license (California A068959, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Otto Liao
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- A068959 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1076 E 1St St Ste B, Tustin, CA 92780
- Phone
- (714) 838-2617
- Enumerated
- Jul 28, 2006
- Record last updated
- Oct 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040804001003); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 1076 E 1St St Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Palwinder Kaur, LACAcupuncturist1154817096
- Francis WangAcupuncturist1770144057
Verify Otto Liao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A068959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average allergy & immunology physician in 2024
889 Medicare Part D claims for 215 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Ipratropium Bromide120 claims
- Fluticasone Propionate83 claims
- Levocetirizine Dihydrochloride60 claims
- Xolair49 claims
- Azelastine Hcl47 claims
- Albuterol Sulfate Hfa46 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.
The MIPS final score for 2023 (Medicare payment program): 95.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,778.05
82 payments; by number, the most common kind was food and beverage; the largest payer was Csl Behring. The 2,496 providers of this specialty with any payment received $8,321.81 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.
Otto Liao among 444 allergy & immunology physician records in California
Otto Liao, M.D. is one of 444 allergy & immunology physician records with a practice address in California. 79% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1997 · median 2004 among the 281 with a school on file
- Record last updated2020 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Tustin → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Arthur Turk, MDTustin, CA 927801437254943
- Raffaele Davidovich, MDAnaheim, CA 928011174528657
- Maheshkumar Vyas, M.D.Anaheim, CA 928081942279633
- Joseph Chun, M.D.Fullerton, CA 928331710015425
- Sahar Faghih, D.O.Fullerton, CA 928331194914226
- Ellen Reich, MDFountain Valley, CA 927081225292279
- Yana Samarasena, MDFountain Valley, CA 927081164683678
- Sharon Williams, M.D.North Tustin, CA 927051457772949
Common questions
What is Otto Liao, M.D.'s NPI number?
Otto Liao, M.D.'s National Provider Identifier (NPI) is 1225042674, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Otto Liao, M.D. located?
The NPPES record lists a practice address at 1076 E 1St St Ste B, Tustin, CA, 92780. Phone: (714) 838-2617. Providers update this record themselves, so call before visiting.
How can I verify Otto Liao, M.D.'s license?
NPPES lists California license number A068959, 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 Otto Liao, M.D. prescribe under Medicare Part D?
In 2024, Otto Liao, M.D. had 889 Medicare Part D claims for 215 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Otto Liao, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.