Dr. Isaac H. Chu, DO

  • Harbor City, CA
  • Emergency medicine physician
NPI1295963254PAC ID2668628868
Medicare services, 2024
24
Medicare patients, 2024
37
Part D claims, 2024
303
Publications
3
Hospital affiliations
2
Practice address
25825 South Vermont Avenue, Harbor City, CA 90710
Practice phone
Call (310) 325-5111
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Kaiser Permanente South Bay Medical Center

Hospital · Harbor City, California

See all 5 affiliations

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Dr. Isaac H. Chu is an emergency medicine physician in Harbor City, California

Dr. Chu practices at Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente.

Dr. Chu's NPI, 1295963254, was assigned on June 29, 2009. Dr. Chu graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009. Dr. Chu's California license number on file is 20A11888.

NPI and contact details
Medicare PAC ID
2668628868
NPI enumeration date
June 29, 2009
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(310) 325-5111
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
43
Medical school graduation
2009

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

Dr. Isaac H. Chu practices at Kaiser Permanente South Bay Medical Center in Harbor City, California

Dr. Chu's primary practice is Kaiser Permanente South Bay Medical Center, at 25825 South Vermont Avenue, Harbor City, CA 90710 in Los Angeles County. The practice phone is (310) 325-5111.

Source: Dmand AI Affiliation Data

Dr. Isaac H. Chu is affiliated with 2 sites of care and 3 medical groups

Dr. Chu's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. Dr. Chu is also affiliated with Providence Saint John's Health Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Chu to 2 more medical groups, each named with a free account.

See all 5 affiliations for Dr. Chu

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

Dmand AI tracks the EHR system at Dr. Isaac H. Chu's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chu practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Kaiser Permanente South Bay Medical CenterAvailable with a free account
+1 more site and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Isaac H. Chu is one of 7,423 emergency medicine physicians in California

Emergency medicine is Dr. Chu's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chu is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Chu's licenses on file in 2 states: California and New York.

Specialties and state licenses

  • Emergency medicine, CaliforniaPrimaryLicense 20A11888 · 2011 to 2025 · taxonomy 207P00000X
  • New York licenseLicense 262605 · 2011 to 2013

Emergency medicine physicians near Dr. Chu

Counts of emergency medicine physicians 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

Dr. Isaac H. Chu billed Medicare for 24 services in 2024

CMS data shows 24 Medicare services from Dr. Chu across 1 procedure code in 2024, for 37 Medicare patients. Medicare paid $2,036 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202424
Medicare patients37
Paid by Medicare$2,036
Procedure codes1

Dr. Chu's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 282024: 2414%

Dr. Chu compared with the California median for emergency medicine physicians, 2024

  • Dr. Chu
  • California median
Medicare services
24vs 26591% below
Medicare patients
37vs 24385% below
Part D claims
134vs 622.2 times

Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.

Dr. Chu'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 Dr. Chu

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

Dr. Isaac H. Chu treated 37 Medicare patients in 2024, average age 67

CMS counts 37 Medicare patients who saw Dr. Chu in 2024. The largest group is 65 to 74, with 17 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 70% are also on Medicaid. Their average risk score is 2.69, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Chu's median patient age at 39, with 63% women.

Medicare patients, 202437
Average age67
Average risk score2.69
Also on Medicaid70%

Dr. Chu's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Chu's Medicare patients by sex, 2024

  • Women1541%
  • Men2259%

Chronic conditions among Dr. Chu's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes65%
  4. Chronic kidney disease41%
  5. Arthritis35%
  6. Ischemic heart disease32%
  7. Mood disorders32%
  8. Depression30%

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

Dr. Chu's patients across all payers

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

Patient panel by age, all payers

Median age 39

Patient panel by sex, all payers

  • Women63%
  • Men36%

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

Dr. Isaac H. Chu wrote 303 Medicare Part D claims in 2024

In 2024, Dr. Chu wrote 303 Medicare Part D claims for 240 patients. 89% of them were for generic drugs. CMS names the drug for 134 of them, across 5 drugs with 11 or more claims each, at $1,290 in total drug cost. In 2023, CMS named 152 claims across 7 drugs.

Part D claims, 2024303
Drugs named by CMS5
Total drug cost$1,290
Part D patients240

Dr. Chu's Part D claims by kind of drug, 2024

  • Generic269 claims89%
  • Brand-name and other34 claims11%

Dr. Chu'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. Chu's Part D claims, 2024

  • Opioids12%36 of 303 claims
  • Antibiotics30%90 of 303 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: 1522024: 13412%

Drugs named by CMS: 5 in 2024, 7 in 2023.

See all prescribing by Dr. Chu

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

How Dr. Isaac H. Chu takes part in Medicare

Dr. Chu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Isaac H. Chu has 3 publications on record

Dmand AI links 3 papers to Dr. Chu in 2012. Dr. Chu's most frequent co-authors are Dimitry Bosoy, MD, Bharath Chakravarthy, MD and Wirachin Hoonpongsimanont, MD.

Papers3

Dr. Chu's most frequent co-authors

Recent publications by Dr. Chu

See all 3 publications and co-authors

See who Dr. Chu researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chu works with, so you can find a warm path to the right emergency medicine physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Isaac H. Chu received $127 in industry payments from 2016 to 2017

CMS Open Payments shows 3 general payments to Dr. Chu from 3 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. CSL Behring paid the most, $93.

General payments to Dr. Chu by program year, 2016 to 2017

Companies that paid Dr. Chu the most, 2016 to 2017

Share is of all general payments to this clinician.

See all payments to Dr. Chu

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

Dr. Isaac H. Chu graduated from WesternU College of Osteopathic Medicine of the Pacific

Dr. Chu graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009.

  1. Medical schoolWesternU College of Osteopathic Medicine of the Pacific
  2. Board certified in emergency medicineAmerican Board of Emergency Medicine

Source: Dmand AI Professional Profile Data

Dr. Isaac H. Chu accepts plans from 2 insurance carriers

Dr. Chu is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • Kaiser Permanente
  • CMS Medicare

Plan types Dr. Chu accepts, by number of carriers

  1. EPO1
  2. HMO1
  3. Medicare1
  4. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Isaac H. Chu'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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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 Dr. Isaac H. Chu

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. Isaac H. Chu's NPI number?

Dr. Isaac H. Chu's NPI number is 1295963254. It was assigned on June 29, 2009, and it is active in the NPI Registry.

What kind of doctor is Dr. Isaac H. Chu?

Dr. Isaac H. Chu is an emergency medicine physician in Harbor City, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Isaac H. Chu practice?

Dr. Chu practices at 25825 South Vermont Avenue, Harbor City, CA 90710. Dr. Chu's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. Dmand AI also links Dr. Chu to 2 medical groups.

What is Dr. Isaac H. Chu's office phone number?

The practice phone on file for Dr. Chu is (310) 325-5111.

What is Dr. Isaac H. Chu's medical license number?

Dr. Chu's California license number on file is 20A11888, one of the licenses on file in 2 states.

Which states has Dr. Isaac H. Chu been licensed in?

Dmand AI has state licenses on file for Dr. Chu in California (2011 to 2025) and New York (2011 to 2013).

Which hospitals is Dr. Isaac H. Chu affiliated with?

Dr. Chu practices at Kaiser Permanente South Bay Medical Center in Harbor City, California. Dr. Chu is also affiliated with Providence Saint John's Health Center.

What medical group is Dr. Isaac H. Chu part of?

Dr. Chu is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Chu to 2 more medical groups.

Does Dr. Isaac H. Chu accept Medicare?

Yes. CMS data shows Dr. Chu billed Medicare for 24 services in 2024, and Dr. Chu accepts Medicare assignment.

How many Medicare patients does Dr. Isaac H. Chu see?

CMS counts 37 Medicare patients who saw Dr. Chu in 2024, with an average age of 67.

Show 9 more questionsShow fewer questions

Is Dr. Isaac H. Chu board certified?

Yes. Dr. Chu is board certified in emergency medicine by the American Board of Emergency Medicine.

What services does Dr. Isaac H. Chu bill to Medicare?

In 2024, Dr. Chu's most billed Medicare services were emergency department visit (99284).

Where did Dr. Isaac H. Chu go to medical school?

Dr. Chu graduated from WesternU College of Osteopathic Medicine of the Pacific in 2009.

What drugs does Dr. Isaac H. Chu prescribe most?

In 2024 Medicare Part D data, Dr. Chu's most prescribed drugs by claims were Cefadroxil, Prednisone and Hydrocodone-Acetaminophen.

Has Dr. Isaac H. Chu received payments from drug or device companies?

CMS Open Payments shows $127 in general payments to Dr. Chu from 3 companies from 2016 to 2017. The largest total came from CSL Behring.

How long has Dr. Isaac H. Chu been practicing?

Dr. Chu graduated from medical school in 2009, 17 years ago.

Does Dr. Isaac H. Chu do research?

Dmand AI links 3 publications to Dr. Chu.

Who does Dr. Isaac H. Chu publish with?

Dr. Chu's most frequent co-authors are Dimitry Bosoy, MD (1 shared paper), Bharath Chakravarthy, MD (1 shared paper) and Wirachin Hoonpongsimanont, MD (1 shared paper).

What insurance does Dr. Isaac H. Chu accept?

Dr. Chu is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

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