Dr. Timothy Ting-Han Chang, MD
- Medicare services, 2024
- 26
- Medicare patients, 2024
- 29
- Part D claims, 2024
- 218
- Hospital affiliations
- 1
- Industry payments
- $167
- Practice address
- 13652 Cantara St, Panorama City, CA 91402
- Practice phone
- Call (818) 375-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chang'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. Timothy Ting-Han Chang is an emergency medicine physician in Panorama City, California
Dr. Chang practices at Panorama City Medical Center in Panorama City, California, part of Kaiser Permanente.
Dr. Chang's NPI, 1265757819, was assigned on April 6, 2010. Dr. Chang graduated from Cleveland Medical College, Homeopathic in 2010. Dr. Chang holds California license A135705.
- NPI
- 1265757819NPI Registry (opens in a new tab)
- NPI enumeration date
- April 6, 2010
- NPI status
- Active
- Practice phone
- (818) 375-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Timothy Ting-Han Chang practices at Panorama City Medical Center in Panorama City, California
Dr. Chang's primary practice is Panorama City Medical Center, at 13652 Cantara St, Panorama City, CA 91402 in Los Angeles County. The practice phone is (818) 375-2000.
- Panorama City Medical Center13652 Cantara St, Panorama City, CA 91402 · Los Angeles CountyPhone(818) 375-2000
Source: Dmand AI Affiliation Data
Dr. Timothy Ting-Han Chang is affiliated with 1 site of care and 1 medical group
Dr. Chang's primary practice is Panorama City Medical Center in Panorama City, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Timothy Ting-Han Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Panorama City Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Timothy Ting-Han Chang is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chang is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Chang's licenses on file in 3 states: California, Virginia and District of Columbia.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Virginia license
- District of Columbia license
Emergency medicine physicians near Dr. Chang
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. Timothy Ting-Han Chang billed Medicare for 26 services in 2024
CMS data shows 26 Medicare services from Dr. Chang across 1 procedure code in 2024, for 29 Medicare patients. Medicare paid $3,171 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 222024: 2618%
Dr. Chang compared with the California median for emergency medicine physicians, 2024
- Dr. Chang
- California median
- Medicare services
- 26vs 26590% below
- Medicare patients
- 29vs 24388% below
- Part D claims
- 152vs 622.5 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Chang'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. Chang 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. Timothy Ting-Han Chang treated 29 Medicare patients in 2024, average age 68
CMS counts 29 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 14 patients. 75% of them have high blood pressure, and 69% have high cholesterol. Their average risk score is 2.71, 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. Chang's median patient age at 41, with 58% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chang's Medicare patients by sex, 2024
- Women1552%
- Men1448%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Arthritis52%
- Diabetes52%
- Ischemic heart disease45%
- Chronic kidney disease38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Timothy Ting-Han Chang wrote 218 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 218 Medicare Part D claims for 141 patients. 91% of them were for generic drugs. CMS names the drug for 152 of them, across 8 drugs with 11 or more claims each, at $2,398 in total drug cost. In 2023, CMS named 107 claims across 4 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic198 claims91%
- Brand-name and other20 claims9%
Dr. Chang'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. Chang's Part D claims, 2024
- Opioids17%37 of 218 claims
- Antibiotics46%100 of 218 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: 1072024: 15242%
Drugs named by CMS: 8 in 2024, 4 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
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Dr. Timothy Ting-Han Chang received $167 in industry payments from 2018 to 2025
CMS Open Payments shows 5 general payments to Dr. Chang from 4 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $109.
General payments to Dr. Chang by program year, 2018 to 2025
Companies that paid Dr. Chang the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Timothy Ting-Han Chang graduated from Cleveland Medical College, Homeopathic
Dr. Chang graduated from Cleveland Medical College, Homeopathic in 2010.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Timothy Ting-Han Chang accepts plans from 2 insurance carriers
Dr. Chang is in network with 2 carriers, including Kaiser Permanente and RI State Medicaid. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- RI State Medicaid
Plan types Dr. Chang accepts, by number of carriers
- EPO1
- HMO1
- Medicaid1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Timothy Ting-Han Chang'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 | Dmand AI Affiliation 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) |
| 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. Timothy Ting-Han Chang
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. Timothy Ting-Han Chang's NPI number?
Dr. Timothy Ting-Han Chang's NPI number is 1265757819. It was assigned on April 6, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy Ting-Han Chang?
Dr. Timothy Ting-Han Chang is an emergency medicine physician in Panorama City, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Timothy Ting-Han Chang practice?
Dr. Chang practices at 13652 Cantara St, Panorama City, CA 91402. Dr. Chang's primary practice is Panorama City Medical Center in Panorama City, California, part of Kaiser Permanente.
What is Dr. Timothy Ting-Han Chang's office phone number?
The practice phone on file for Dr. Chang is (818) 375-2000.
What is Dr. Timothy Ting-Han Chang's medical license number?
Dr. Chang holds California license A135705, one of the licenses on file in 3 states.
Which states has Dr. Timothy Ting-Han Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in California (2015 to 2027), Virginia (2013 to 2020) and District of Columbia (2013 to 2018).
Which hospitals is Dr. Timothy Ting-Han Chang affiliated with?
Dr. Chang practices at Panorama City Medical Center in Panorama City, California.
What medical group is Dr. Timothy Ting-Han Chang part of?
Dr. Chang is linked to Southern California Permanente Medical Group.
Does Dr. Timothy Ting-Han Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 26 services in 2024.
How many Medicare patients does Dr. Timothy Ting-Han Chang see?
CMS counts 29 Medicare patients who saw Dr. Chang in 2024, with an average age of 68.
Show 7 more questionsShow fewer questions
Is Dr. Timothy Ting-Han Chang board certified?
Yes. Dr. Chang is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Timothy Ting-Han Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were emergency department visit (99285).
Where did Dr. Timothy Ting-Han Chang go to medical school?
Dr. Chang graduated from Cleveland Medical College, Homeopathic in 2010.
What drugs does Dr. Timothy Ting-Han Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Cefpodoxime Proxetil, Hydrocodone-Acetaminophen and Prednisone.
Has Dr. Timothy Ting-Han Chang received payments from drug or device companies?
CMS Open Payments shows $167 in general payments to Dr. Chang from 4 companies from 2018 to 2025. The largest total came from Allergan Inc.
How long has Dr. Timothy Ting-Han Chang been practicing?
Dr. Chang graduated from medical school in 2010, 16 years ago.
What insurance does Dr. Timothy Ting-Han Chang accept?
Dr. Chang is in network with 2 carriers, including Kaiser Permanente and RI State Medicaid. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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