Dr. Christina Ka-Yee Tse Kopatz, MD
- Part D claims, 2024
- 71
- Hospital affiliations
- 1
- Industry payments
- $1,113
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 9333 Imperial Highway, Downey, CA 90242
- Practice phone
- Call (562) 461-6007
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kopatz's professional email, personal email and mobile number
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Dr. Christina Ka-Yee Tse Kopatz is a general surgeon in Downey, California
Dr. Kopatz practices at Downey Medical Center in Downey, California, part of Kaiser Permanente.
Dr. Kopatz's NPI, 1396204285, was assigned on March 19, 2019. Dr. Kopatz graduated from UC Irvine School of Medicine in 2019. Dr. Kopatz holds California license A177481.
- NPI
- 1396204285NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537578778
- NPI enumeration date
- March 19, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (562) 461-6007
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christina Ka-Yee Tse Kopatz practices at Downey Medical Center in Downey, California
Dr. Kopatz's primary practice is Downey Medical Center, at 9333 Imperial Highway, Downey, CA 90242 in Los Angeles County. The practice phone is (562) 461-6007.
- Downey Medical Center9333 Imperial Highway, Downey, CA 90242 · Los Angeles CountyPhone(562) 461-6007
Source: Dmand AI Affiliation Data
Dr. Christina Ka-Yee Tse Kopatz is affiliated with 3 sites of care and 1 medical group
Dr. Kopatz's primary practice is Downey Medical Center in Downey, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Kopatz to 1 more breast imaging center and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christina Ka-Yee Tse Kopatz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kopatz practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Downey Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christina Ka-Yee Tse Kopatz is one of 2,926 general surgeons in California
Surgery is Dr. Kopatz's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Kopatz is board certified in surgery by the American Board of Surgery. Dr. Kopatz is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Dr. Kopatz
Counts of general surgeons 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. Christina Ka-Yee Tse Kopatz's patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Kopatz's median patient age at 52, with 68% women.
Dr. Kopatz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women68%
- Men32%
Source: Dmand AI Patient Panel Data
Dr. Christina Ka-Yee Tse Kopatz wrote 71 Medicare Part D claims in 2024
In 2024, Dr. Kopatz wrote 71 Medicare Part D claims for 41 patients. 93% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $45 in total drug cost. In 2023, CMS named 18 claims across 1 drug.
Dr. Kopatz's Part D claims by kind of drug, 2024
- Generic66 claims93%
- Brand-name and other5 claims7%
Dr. Kopatz'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. Kopatz's Part D claims, 2024
- Opioids32%23 of 71 claims
- Antibiotics28%20 of 71 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: 182024: 1139%
Drugs named by CMS: 1 in 2024, 1 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
How Dr. Christina Ka-Yee Tse Kopatz takes part in Medicare
Dr. Kopatz 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. Christina Ka-Yee Tse Kopatz received $1,113 in industry payments from 2024 to 2025
CMS Open Payments shows 10 general payments to Dr. Kopatz from 2 drug and device companies from 2024 to 2025. Travel and lodging make up the largest share, 78% of the total. Intuitive Surgical, Inc. paid the most, $1,031.
General payments to Dr. Kopatz by program year, 2024 to 2025
General payments to Dr. Kopatz by kind, 2024 to 2025
- Travel and lodging$86878%
- Food and beverage$24522%
Companies that paid Dr. Kopatz the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christina Ka-Yee Tse Kopatz graduated from UC Irvine School of Medicine
Dr. Kopatz graduated from UC Irvine School of Medicine in 2019.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Christina Ka-Yee Tse Kopatz accepts plans from 2 insurance carriers
Dr. Kopatz 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. Kopatz accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Christina Ka-Yee Tse Kopatz'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Christina Ka-Yee Tse Kopatz
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. Christina Ka-Yee Tse Kopatz's NPI number?
Dr. Christina Ka-Yee Tse Kopatz's NPI number is 1396204285. It was assigned on March 19, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Christina Ka-Yee Tse Kopatz?
Dr. Christina Ka-Yee Tse Kopatz is a general surgeon in Downey, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Christina Ka-Yee Tse Kopatz practice?
Dr. Kopatz practices at 9333 Imperial Highway, Downey, CA 90242. Dr. Kopatz's primary practice is Downey Medical Center in Downey, California, part of Kaiser Permanente. Dmand AI also links Dr. Kopatz to 1 breast imaging center and 1 group practice or clinic.
What is Dr. Christina Ka-Yee Tse Kopatz's office phone number?
The practice phone on file for Dr. Kopatz is (562) 461-6007.
What is Dr. Christina Ka-Yee Tse Kopatz's medical license number?
Dr. Kopatz holds California license A177481.
Which hospitals is Dr. Christina Ka-Yee Tse Kopatz affiliated with?
Dr. Kopatz practices at Downey Medical Center in Downey, California.
What medical group is Dr. Christina Ka-Yee Tse Kopatz part of?
Dr. Kopatz is linked to Southern California Permanente Medical Group.
Does Dr. Christina Ka-Yee Tse Kopatz accept Medicare?
Yes. CMS lists Dr. Kopatz as accepting Medicare assignment.
Is Dr. Christina Ka-Yee Tse Kopatz board certified?
Yes. Dr. Kopatz is board certified in surgery by the American Board of Surgery.
Where did Dr. Christina Ka-Yee Tse Kopatz go to medical school?
Dr. Kopatz graduated from UC Irvine School of Medicine in 2019.
Show 4 more questionsShow fewer questions
What drugs does Dr. Christina Ka-Yee Tse Kopatz prescribe most?
In 2024 Medicare Part D data, Dr. Kopatz's most prescribed drugs by claims were Tramadol HCl.
Has Dr. Christina Ka-Yee Tse Kopatz received payments from drug or device companies?
CMS Open Payments shows $1,113 in general payments to Dr. Kopatz from 2 companies from 2024 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Christina Ka-Yee Tse Kopatz been practicing?
Dr. Kopatz graduated from medical school in 2019, 7 years ago.
What insurance does Dr. Christina Ka-Yee Tse Kopatz accept?
Dr. Kopatz 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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