Bert Liu

  • Pasadena, CA
  • Pulmonologist
NPI1437511607PAC ID5496088593
Medicare services, 2024
1,740
Medicare patients, 2024
652
Part D claims, 2024
369
MIPS score, 2024
75
Hospital affiliations
1
Practice address
39 Congress Street, Suite 310, Pasadena, CA 91105
Practice phone
Call (626) 795-0282
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Huntington Specialty Surgery Center

Surgery Center - Medicare-Certified · Pasadena, California

See all 4 affiliations

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Bert Liu is a pulmonologist in Pasadena, California

Bert Liu practices at Huntington Specialty Surgery Center in Pasadena, California.

Bert Liu's NPI, 1437511607, was assigned on March 25, 2016. Bert Liu graduated from Boston University School Of Medicine in 2015. Bert Liu's California license number on file is A154347.

NPI and contact details
Medicare PAC ID
5496088593
NPI enumeration date
March 25, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(626) 795-0282
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
36
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Bert Liu practices at Huntington Specialty Surgery Center in Pasadena, California

Bert Liu's primary practice is Huntington Specialty Surgery Center, at 39 Congress Street, Suite 310, Pasadena, CA 91105. The practice phone is (626) 795-0282.

  • Huntington Specialty Surgery Center
    39 Congress Street, Suite 310, Pasadena, CA 91105Phone(626) 795-0282

Source: Dmand AI Affiliation Data

Bert Liu is affiliated with 3 sites of care and 1 medical group

Bert Liu's primary practice is Huntington Specialty Surgery Center in Pasadena, California. Bert Liu is also affiliated with Huntington Hospital. The medical group on file is Huntington Pulmonary Medical Group. Dmand AI also links Bert Liu to 1 more group practice or clinic, named with a free account.

See all 4 affiliations for Bert Liu

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Bert Liu's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Bert Liu practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Huntington Specialty Surgery CenterAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Bert Liu is one of 1,339 pulmonologists in California

Pulmonary disease is Bert Liu's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Bert Liu is board certified in critical care medicine by the American Board of Internal Medicine. Bert Liu has a license on file in California.

Specialties and state licenses

  • Pulmonary disease, CaliforniaPrimaryLicense A154347 · 2018 to 2025 · taxonomy 207RP1001X

Clinical focus

Dmand AI lists asthma, atrial fibrillation and flutter, cerebrovascular disease, chronic diabetes, chronic hypertension, chronic kidney disease, chronic obstructive pulmonary disease (COPD) and coronary artery disease among the conditions Bert Liu treats.

Pulmonologists near Bert Liu

Counts of pulmonologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Bert Liu billed Medicare for 1,740 services in 2024

CMS data shows 1,740 Medicare services from Bert Liu across 16 procedure codes in 2024, for 652 Medicare patients. Medicare paid $204,170 for them.

Medicare services, 20241,740
Medicare patients652
Paid by Medicare$204,170
Procedure codes16

Bert Liu's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,3482024: 1,60119%
Tests and treatments
2023: 02024: 56
Surgery
2023: 182024: 51183%
Imaging
2023: 202024: 3260%

Where Bert Liu's Medicare services took place, 2024

  • In an office25315%
  • In a facility1,48785%

Bert Liu compared with the California median for pulmonologists, 2024

  • Bert Liu
  • California median
Medicare services
1,740vs 6492.7 times
Medicare patients
652vs 2722.4 times
Part D claims
203vs 42152% below

Medians across 1,263 pulmonologists in California with Dmand AI profiles that report each measure.

Bert Liu'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.

See all procedures by Bert Liu

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Bert Liu treated 652 Medicare patients in 2024, average age 77

CMS counts 652 Medicare patients who saw Bert Liu in 2024. The largest group is 75 to 84, with 245 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 2.79, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Bert Liu's median patient age at 68, with 48% women.

Medicare patients, 2024652
Average age77
Average risk score2.79
Also on Medicaid48%

Bert Liu's Medicare patients by age, 2024

Bert Liu's Medicare patients by sex, 2024

  • Women33852%
  • Men31448%

Chronic conditions among Bert Liu's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis62%
  4. Ischemic heart disease59%
  5. Heart failure58%
  6. Chronic kidney disease52%
  7. Diabetes51%
  8. Mood disorders45%

Share of Medicare patients with each condition. A patient can have several.

Bert Liu's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 68

Patient panel by sex, all payers

  • Women48%
  • Men51%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Bert Liu wrote 369 Medicare Part D claims in 2024

In 2024, Bert Liu wrote 369 Medicare Part D claims for 79 patients. 53% of them were for generic drugs. CMS names the drug for 203 of them, across 7 drugs with 11 or more claims each, at $37,096 in total drug cost. In 2023, CMS named 37 claims across 2 drugs.

Part D claims, 2024369
Drugs named by CMS7
Total drug cost$37,096
Part D patients79

Bert Liu's Part D claims by kind of drug, 2024

  • Generic196 claims53%
  • Brand-name173 claims47%

Bert Liu'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 Bert Liu's Part D claims, 2024

  • Antibiotics8%31 of 369 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: 372024: 203449%

Drugs named by CMS: 7 in 2024, 2 in 2023.

See all prescribing by Bert Liu

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

Bert Liu scored 75 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Bert Liu for performance year 2024, reported as part of a group. Bert Liu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Bert Liu as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes
MIPS final score, 2024
75 of 100

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Bert Liu received $709 in industry payments from 2022 to 2025

CMS Open Payments shows 19 general payments to Bert Liu from 9 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. CVRx, Inc. paid the most, $165.

General payments to Bert Liu by program year, 2022 to 2025

Companies that paid Bert Liu the most, 2022 to 2025

Share is of all general payments to this clinician.

See all payments to Bert Liu

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Bert Liu graduated from Boston University School Of Medicine

Bert Liu graduated from Boston University School Of Medicine in 2015.

  1. Medical schoolBoston University School Of Medicine
  2. Board certified in critical care medicineAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in pulmonary diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Bert Liu accepts plans from 9 insurance carriers

Bert Liu is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • LA Care
  • Regence Health Plans
  • CMS Medicare
  • Humana
  • +1 more carriersWith a free account

Plan types Bert Liu accepts, by number of carriers

  1. Medicare7
  2. PPO5
  3. HMO3
  4. POS2
  5. EPO1

Source: Dmand AI Insurance Network Data

Sources for Bert Liu's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Bert Liu

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Bert Liu's NPI number?

Bert Liu's NPI number is 1437511607. It was assigned on March 25, 2016, and it is active in the NPI Registry.

What does Bert Liu specialize in?

Bert Liu is a pulmonologist in Pasadena, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).

Where does Bert Liu practice?

Bert Liu practices at 39 Congress Street, Suite 310, Pasadena, CA 91105. Bert Liu's primary practice is Huntington Specialty Surgery Center in Pasadena, California. Dmand AI also links Bert Liu to 1 group practice or clinic.

What is Bert Liu's office phone number?

The practice phone on file for Bert Liu is (626) 795-0282.

What is Bert Liu's medical license number?

Bert Liu's California license number on file is A154347.

Which hospitals is Bert Liu affiliated with?

Bert Liu is affiliated with Huntington Hospital.

What medical group is Bert Liu part of?

Bert Liu is linked to Huntington Pulmonary Medical Group.

Does Bert Liu accept Medicare?

Yes. CMS data shows Bert Liu billed Medicare for 1,740 services in 2024, and Bert Liu accepts Medicare assignment.

Does Bert Liu offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Bert Liu as offering telehealth services.

What is Bert Liu's MIPS score?

Bert Liu's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

How many Medicare patients does Bert Liu see?

CMS counts 652 Medicare patients who saw Bert Liu in 2024, with an average age of 77.

Is Bert Liu board certified?

Yes. Bert Liu is board certified in critical care medicine by the American Board of Internal Medicine.

What services does Bert Liu bill to Medicare?

In 2024, Bert Liu's most billed Medicare services were hospital inpatient care (99233), critical care (99291) and hospital inpatient care (99223).

Where did Bert Liu go to medical school?

Bert Liu graduated from Boston University School Of Medicine in 2015.

What drugs does Bert Liu prescribe most?

In 2024 Medicare Part D data, Bert Liu's most prescribed drugs by claims were Albuterol Sulfate Hfa, Trelegy Ellipta and Prednisone.

Has Bert Liu received payments from drug or device companies?

CMS Open Payments shows $709 in general payments to Bert Liu from 9 companies from 2022 to 2025. The largest total came from CVRx, Inc.

How long has Bert Liu been practicing?

Bert Liu graduated from medical school in 2015, 11 years ago.

What insurance does Bert Liu accept?

Bert Liu is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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