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Dr. John Chao-Chung Wu, MD
NPI1295804201PAC ID6103826532
- Medicare services, 2024
- 878
- Medicare patients, 2024
- 517
- Part D claims, 2024
- 698
- Publications
- 2
- Hospital affiliations
- 3
- Practice address
- 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345
- Practice phone
- Call (818) 898-4630
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sub-Acute Care Center
Skilled Nursing Facility - Hospital-Based · Mission Hills, California
Find Dr. Wu'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. John Chao-Chung Wu is an emergency medicine physician in Mission Hills, California
Dr. Wu practices at Sub-Acute Care Center in Mission Hills, California.
Dr. Wu's NPI, 1295804201, was assigned on November 6, 2006. Dr. Wu graduated from David Geffen School of Medicine at UCLA in 2004. Dr. Wu's California license number on file is A93845.
NPI and contact details
- NPI
- 1295804201NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103826532
- NPI enumeration date
- November 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (818) 898-4630
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Chao-Chung Wu practices at 2 locations in Mission Hills, California
Dr. Wu's primary practice is Sub-Acute Care Center, at 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345 in Los Angeles County. The practice phone is (818) 898-4630. Dr. Wu also practices at Providence Holy Cross Medical Center, 15031 W Rinaldi St, Mission Hills, CA 91345.
- Sub-Acute Care CenterPrimary11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345 · Los Angeles CountyPhone(818) 898-4630
- Providence Holy Cross Medical Center15031 W Rinaldi St, Mission Hills, CA 91345 · Los Angeles CountyPhone(818) 365-8051
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. John Chao-Chung Wu is affiliated with 4 sites of care and 2 medical groups
Dr. Wu's primary practice is Sub-Acute Care Center in Mission Hills, California. Dr. Wu is also affiliated with Providence Holy Cross Medical Center. The medical group on file is Vituity. Dmand AI also links Dr. Wu to 2 more hospitals and 1 medical group, each named with a free account.
Sub-Acute Care CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Chao-Chung Wu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wu practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sub-Acute Care Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Chao-Chung Wu is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Wu's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Wu is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Wu's licenses on file in 15 states: California, Arizona, Colorado, New Jersey, Nevada, Florida, Idaho, Illinois, Missouri, Tennessee, Utah, Indiana, Kansas, Minnesota and North Carolina.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Arizona license
- Colorado license
- New Jersey license
- Nevada license
- Florida license
- Idaho license
- Illinois license
- Missouri license
- Tennessee license
- Utah license
- Indiana license
- Kansas license
- Minnesota license
- North Carolina license
Emergency medicine physicians near Dr. Wu
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. John Chao-Chung Wu billed Medicare for 878 services in 2024
CMS data shows 878 Medicare services from Dr. Wu across 8 procedure codes in 2024, for 517 Medicare patients. Medicare paid $71,605 for them.
Medicare services, 2024878
Medicare patients517
Paid by Medicare$71,605
Procedure codes8
Dr. Wu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4302024: 48813%
- Tests and treatments
- 2023: 2262024: 2333%
- Imaging
- 2023: 1152024: 15737%
Where Dr. Wu's Medicare services took place, 2024
- In an office344%
- In a facility84496%
Dr. Wu compared with the California median for emergency medicine physicians, 2024
- Dr. Wu
- California median
- Medicare services
- 878vs 2653.3 times
- Medicare patients
- 517vs 2432.1 times
- Part D claims
- 454vs 627.3 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Wu'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wu and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Chao-Chung Wu treated 517 Medicare patients in 2024, average age 74
CMS counts 517 Medicare patients who saw Dr. Wu in 2024. The largest group is 65 to 74, with 179 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 68% are also on Medicaid. Their average risk score is 2.63, 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. Wu's median patient age at 40, with 61% women.
Medicare patients, 2024517
Average age74
Average risk score2.63
Also on Medicaid68%
Dr. Wu's Medicare patients by age, 2024
Dr. Wu's Medicare patients by sex, 2024
- Women29657%
- Men22143%
Chronic conditions among Dr. Wu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Diabetes57%
- Ischemic heart disease51%
- Heart failure46%
- Mood disorders45%
- Chronic kidney disease42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Chao-Chung Wu wrote 698 Medicare Part D claims in 2024
In 2024, Dr. Wu wrote 698 Medicare Part D claims for 543 patients. 93% of them were for generic drugs. CMS names the drug for 454 of them, across 16 drugs with 11 or more claims each, at $4,449 in total drug cost. In 2023, CMS named 353 claims across 14 drugs.
Part D claims, 2024698
Drugs named by CMS16
Total drug cost$4,449
Part D patients543
Dr. Wu's Part D claims by kind of drug, 2024
- Generic650 claims93%
- Brand-name and other48 claims7%
Dr. Wu'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. Wu's Part D claims, 2024
- Opioids10%70 of 698 claims
- Antibiotics33%229 of 698 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: 3532024: 45429%
Drugs named by CMS: 16 in 2024, 14 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. John Chao-Chung Wu offers telehealth to Medicare patients
Dr. Wu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Wu as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Chao-Chung Wu has 2 publications on record
Dmand AI links 2 papers to Dr. Wu in 2019. Dr. Wu's most frequent co-author is John C. Wu, MD.
Papers2
Dr. Wu's most frequent co-authors
Recent publications by Dr. Wu
See who Dr. Wu researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Wu works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Chao-Chung Wu received $87 in industry payments from 2022 to 2025
CMS Open Payments shows 3 general payments to Dr. Wu from 3 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $50.
General payments to Dr. Wu by program year, 2022 to 2025
Companies that paid Dr. Wu the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Chao-Chung Wu graduated from David Geffen School of Medicine at UCLA
Dr. Wu graduated from David Geffen School of Medicine at UCLA in 2004.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. John Chao-Chung Wu accepts plans from 9 insurance carriers
Dr. Wu is in network with 9 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- DentaQuest
- HCSC
- +1 more carriersWith a free account
Plan types Dr. Wu accepts, by number of carriers
- PPO5
- HMO3
- POS3
- Medicare2
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. John Chao-Chung Wu'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 Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 | Doctors and Clinicians National Downloadable File (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) |
| 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. John Chao-Chung Wu
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. John Chao-Chung Wu's NPI number?
Dr. John Chao-Chung Wu's NPI number is 1295804201. It was assigned on November 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Chao-Chung Wu?
Dr. John Chao-Chung Wu is an emergency medicine physician in Mission Hills, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. John Chao-Chung Wu practice?
Dr. Wu practices at 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345. Dr. Wu also practices at 15031 W Rinaldi St, Mission Hills, CA 91345. Dr. Wu's primary practice is Sub-Acute Care Center in Mission Hills, California. Dmand AI also links Dr. Wu to 2 hospitals and 1 medical group.
What is Dr. John Chao-Chung Wu's office phone number?
The practice phone on file for Dr. Wu is (818) 898-4630.
What is Dr. John Chao-Chung Wu's medical license number?
Dr. Wu's California license number on file is A93845, one of the licenses on file in 15 states.
Which states has Dr. John Chao-Chung Wu been licensed in?
Dmand AI has state licenses on file for Dr. Wu in California (2006 to 2025), Arizona (2021 to 2027), Colorado (2023 to 2027), New Jersey (2021 to 2027), Nevada (2021 to 2027), Florida (2022 to 2026), Idaho (2021 to 2026), Illinois (2021 to 2026), Missouri (2022 to 2026), Tennessee (2022 to 2026), Utah (2021 to 2026), Indiana (2022 to 2025), Kansas (2021 to 2025), Minnesota (2020 to 2025) and North Carolina (2022 to 2025).
Which hospitals is Dr. John Chao-Chung Wu affiliated with?
Dr. Wu is affiliated with Providence Holy Cross Medical Center. Dmand AI links Dr. Wu to 2 more hospitals.
What medical group is Dr. John Chao-Chung Wu part of?
Dr. Wu is linked to Vituity. Dmand AI links Dr. Wu to 1 more medical group.
Does Dr. John Chao-Chung Wu accept Medicare?
Yes. CMS data shows Dr. Wu billed Medicare for 878 services in 2024, and Dr. Wu accepts Medicare assignment.
Does Dr. John Chao-Chung Wu offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Wu as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. John Chao-Chung Wu see?
CMS counts 517 Medicare patients who saw Dr. Wu in 2024, with an average age of 74.
Is Dr. John Chao-Chung Wu board certified?
Yes. Dr. Wu is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. John Chao-Chung Wu bill to Medicare?
In 2024, Dr. Wu's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and diagnostic imaging (71045).
Where did Dr. John Chao-Chung Wu go to medical school?
Dr. Wu graduated from David Geffen School of Medicine at UCLA in 2004.
What drugs does Dr. John Chao-Chung Wu prescribe most?
In 2024 Medicare Part D data, Dr. Wu's most prescribed drugs by claims were Cephalexin, Azithromycin and Naproxen.
Has Dr. John Chao-Chung Wu received payments from drug or device companies?
CMS Open Payments shows $87 in general payments to Dr. Wu from 3 companies from 2022 to 2025. The largest total came from Abbvie Inc.
How long has Dr. John Chao-Chung Wu been practicing?
Dr. Wu graduated from medical school in 2004, 22 years ago.
Does Dr. John Chao-Chung Wu do research?
Dmand AI links 2 publications to Dr. Wu.
Who does Dr. John Chao-Chung Wu publish with?
Dr. Wu's most frequent co-authors are John C. Wu, MD (1 shared paper).
What insurance does Dr. John Chao-Chung Wu accept?
Dr. Wu is in network with 9 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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