Adrenal Cortex HormonesAsthmaBronchodilator Agents
Dr. Otto Y. Liao, MD
NPI1225042674PAC ID0840261699
- Medicare services, 2024
- 11,326
- Medicare patients, 2024
- 232
- Part D claims, 2024
- 889
- Publications
- 4
- MIPS score, 2024
- 25
- Practice address
- 1101 Bryan Ave, Tustin, CA 92780
- Practice phone
- Call (714) 838-2617
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
TLC Allergy and Asthma Associates Inc
Tustin, California
Find Dr. Liao's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Otto Y. Liao is an allergist and immunologist in Tustin, California
Dr. Liao practices at TLC Allergy and Asthma Associates Inc in Tustin, California.
Dr. Liao's NPI, 1225042674, was assigned on July 28, 2006. Dr. Liao graduated from Keck School of Medicine of USC in 1997. Dr. Liao holds California license A068959.
NPI and contact details
- NPI
- 1225042674NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840261699
- NPI enumeration date
- July 28, 2006
- NPI status
- Active
- Practice phone
- (714) 838-2617
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Otto Y. Liao practices at TLC Allergy and Asthma Associates Inc in Tustin, California
Dr. Liao's primary practice is TLC Allergy and Asthma Associates Inc, at 1101 Bryan Ave, Tustin, CA 92780 in Orange County. The practice phone is (714) 838-2617.
- TLC Allergy and Asthma Associates Inc1101 Bryan Ave, Tustin, CA 92780 · Orange CountyPhone(714) 838-2617
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Otto Y. Liao is affiliated with 2 sites of care
Dr. Liao's primary practice is TLC Allergy and Asthma Associates Inc in Tustin, California. Dmand AI also links Dr. Liao to 1 physician office, named with a free account.
TLC Allergy and Asthma Associates IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Otto Y. Liao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Liao practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| TLC Allergy and Asthma Associates Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Otto Y. Liao is one of 386 allergists and immunologists in California
Allergy and immunology is Dr. Liao's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Liao is board certified in allergy & immunology by the American Board of Allergy and Immunology. Dr. Liao is licensed in California.
Specialties and state licenses
- Allergy and immunology, CaliforniaPrimary
Clinical focus
Dmand AI lists asthma, chronic nasal allergies, hives and immune deficiency disease among the conditions Dr. Liao treats.
Allergists and immunologists near Dr. Liao
Counts of allergists and immunologists with a Dmand AI profile, by place and practice. Each opens the list.
386allergists and immunologists in California
2allergists and immunologists in Tustin
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Otto Y. Liao billed Medicare for 11,326 services in 2024
CMS data shows 11,326 Medicare services from Dr. Liao across 6 procedure codes in 2024, for 232 Medicare patients. Medicare paid $131,747 for them. Every service was in an office.
Medicare services, 202411,326
Medicare patients232
Paid by Medicare$131,747
Procedure codes6
Dr. Liao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 10,6002024: 10,9734%
- Office and hospital visits
- 2023: 3762024: 3536%
Dr. Liao compared with the California median for allergists and immunologists, 2024
- Dr. Liao
- California median
- Medicare services
- 11,326vs 1,8406.2 times
- Medicare patients
- 232vs 14560% above
- Part D claims
- 749vs 2592.9 times
Medians across 368 allergists and immunologists in California with Dmand AI profiles that report each measure.
Dr. Liao's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Liao?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Liao and other allergists and immunologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Otto Y. Liao treated 232 Medicare patients in 2024, average age 76
CMS counts 232 Medicare patients who saw Dr. Liao in 2024. The largest group is 65 to 74, with 103 patients. 75% of them have high cholesterol, and 70% have high blood pressure. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Liao's median patient age at 49, with 62% women.
Medicare patients, 2024232
Average age76
Average risk score0.97
Dr. Liao's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Liao's Medicare patients by sex, 2024
- Women16672%
- Men6628%
Chronic conditions among Dr. Liao's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis53%
- Asthma29%
- Diabetes25%
- Osteoporosis24%
- Anxiety23%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Liao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women62%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Otto Y. Liao wrote 889 Medicare Part D claims in 2024
In 2024, Dr. Liao wrote 889 Medicare Part D claims for 215 patients. 64% of them were for generic drugs. CMS names the drug for 749 of them, across 21 drugs with 11 or more claims each, at $1,344,107 in total drug cost. In 2023, CMS named 705 claims across 18 drugs.
Part D claims, 2024889
Drugs named by CMS21
Total drug cost$1.3M
Part D patients215
Dr. Liao's Part D claims by kind of drug, 2024
- Generic572 claims64%
- Brand-name317 claims36%
Dr. Liao's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Liao's Part D claims, 2024
- Antibiotics3%31 of 889 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7052024: 7496%
Drugs named by CMS: 21 in 2024, 18 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Otto Y. Liao scored 25 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 25 out of 100 for Dr. Liao for performance year 2024, reported individually.
Dr. Liao's MIPS scores, performance year 2024
- 25of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 82of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Otto Y. Liao has 4 publications on record
Dmand AI links 4 papers to Dr. Liao in 2011. The most frequent topics are Asthma and School Health Services. Dr. Liao's most frequent co-authors are Stanley Paul Galant, MD, Olga Lydia Guijon, MD and Sudhir Gupta, MD.
Papers4
Topics Dr. Liao writes about most
- Asthma
- School Health Services
Dr. Liao's most frequent co-authors
- Stanley Paul Galant, MD3 shared papers
- Olga Lydia Guijon, MD1 shared paper
- Sudhir Gupta, MD1 shared paper
Recent publications by Dr. Liao
Ann Allergy Asthma Immunol
AgammaglobulinemiaAntibody FormationAntibody Specificity
AsthmaRespiratory Function TestsSchool Health Services
AbsenteeismAsthmaCalifornia
See who Dr. Liao researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Liao works with, so you can find a warm path to the right allergists and immunologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Otto Y. Liao received $23,536 in industry payments from 2016 to 2025
CMS Open Payments shows 906 general payments to Dr. Liao from 46 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 78% of the total. CSL Behring paid the most, $4,198.
General payments to Dr. Liao by program year, 2016 to 2025
General payments to Dr. Liao by kind, 2016 to 2025
$23.5Kin total
- Food and beverage$18,30078%
- Speaker and faculty fees$2,44010%
- Honoraria$2,43010%
- Education$2261%
- Other$1401%
Companies that paid Dr. Liao the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Otto Y. Liao has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Liao, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Liao
- 2012
- CMS Stage 1 EHR
- 2011
- Checkbook Top Doc
Source: Dmand AI Professional Profile Data
Dr. Otto Y. Liao graduated from Keck School of Medicine of USC
Dr. Liao graduated from Keck School of Medicine of USC in 1997. Dr. Liao is a member of AAAAI.
- Medical school
- Board certified in allergy & immunology
Source: Dmand AI Professional Profile Data
Dr. Otto Y. Liao accepts plans from 17 insurance carriers
Dr. Liao is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Humana
- Blue Cross Blue Shield of Massachusetts
- LA Care
- +9 more carriersWith a free account
Plan types Dr. Liao accepts, by number of carriers
- Medicare11
- PPO10
- HMO9
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Otto Y. Liao's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Otto Y. Liao
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Otto Y. Liao's NPI number?
Dr. Otto Y. Liao's NPI number is 1225042674. It was assigned on July 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Otto Y. Liao?
Dr. Otto Y. Liao is an allergist and immunologist in Tustin, California. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Otto Y. Liao practice?
Dr. Liao practices at 1101 Bryan Ave, Tustin, CA 92780. Dr. Liao's primary practice is TLC Allergy and Asthma Associates Inc in Tustin, California. Dmand AI also links Dr. Liao to 1 physician office.
What is Dr. Otto Y. Liao's office phone number?
The practice phone on file for Dr. Liao is (714) 838-2617.
What is Dr. Otto Y. Liao's medical license number?
Dr. Liao holds California license A068959.
Does Dr. Otto Y. Liao accept Medicare?
Yes. CMS data shows Dr. Liao billed Medicare for 11,326 services in 2024.
What is Dr. Otto Y. Liao's MIPS score?
Dr. Liao's MIPS final score for performance year 2024 is 25 out of 100, reported individually.
How many Medicare patients does Dr. Otto Y. Liao see?
CMS counts 232 Medicare patients who saw Dr. Liao in 2024, with an average age of 76.
Is Dr. Otto Y. Liao board certified?
Yes. Dr. Liao is board certified in allergy & immunology by the American Board of Allergy and Immunology.
What services does Dr. Otto Y. Liao bill to Medicare?
In 2024, Dr. Liao's most billed Medicare services were allergy test or treatment (95165), allergy test or treatment (95004) and allergy test or treatment (95117).
Show 7 more questionsShow fewer questions
Where did Dr. Otto Y. Liao go to medical school?
Dr. Liao graduated from Keck School of Medicine of USC in 1997.
What drugs does Dr. Otto Y. Liao prescribe most?
In 2024 Medicare Part D data, Dr. Liao's most prescribed drugs by claims were Ipratropium Bromide, Fluticasone Propionate and Levocetirizine Dihydrochloride.
Has Dr. Otto Y. Liao received payments from drug or device companies?
CMS Open Payments shows $23,536 in general payments to Dr. Liao from 46 companies from 2016 to 2025. The largest total came from CSL Behring.
How long has Dr. Otto Y. Liao been practicing?
Dr. Liao graduated from medical school in 1997, 29 years ago.
Does Dr. Otto Y. Liao do research?
Dmand AI links 4 publications to Dr. Liao.
Who does Dr. Otto Y. Liao publish with?
Dr. Liao's most frequent co-authors are Stanley Paul Galant, MD (3 shared papers), Olga Lydia Guijon, MD (1 shared paper) and Sudhir Gupta, MD (1 shared paper).
What insurance does Dr. Otto Y. Liao accept?
Dr. Liao is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.
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