Dr. Chun Ting Siu, DO
- Part D claims, 2024
- 49
- Hospital affiliations
- 1
- Industry payments
- $3,193
- Medical groups
- 2
- State license
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Siu'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. Chun Ting Siu is a hematologist and oncologist in Stockton, California
Dr. Siu practices at Permanente Medical Group Inc in Stockton, California.
Dr. Siu's NPI, 1871150011, was assigned on May 23, 2019. Dr. Siu graduated from Touro Un Col of Osteopathic Medicine, New York in 2019. Dr. Siu holds Pennsylvania license OT019021.
- NPI
- 1871150011NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537492087
- NPI enumeration date
- May 23, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chun Ting Siu practices at Permanente Medical Group Inc in Stockton, California
Dr. Siu's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Chun Ting Siu is affiliated with 4 sites of care and 2 medical groups
Dr. Siu's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. Siu is also affiliated with Kaiser Permanente South Sacramento Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Siu to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chun Ting Siu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siu practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Chun Ting Siu is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Siu's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Siu is licensed in Pennsylvania.
Specialties and state licenses
- Hematology and oncology, PennsylvaniaPrimary
Hematologists and oncologists near Dr. Siu
Counts of hematologists and oncologists 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. Chun Ting Siu's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Siu's median patient age at 64, with 71% women.
Dr. Siu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women71%
- Men28%
Source: Dmand AI Patient Panel Data
Dr. Chun Ting Siu wrote 49 Medicare Part D claims in 2024
In 2024, Dr. Siu wrote 49 Medicare Part D claims for 29 patients. 76% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $44 in total drug cost. In 2021, CMS named 144 claims across 9 drugs.
Dr. Siu's Part D claims by kind of drug, 2024
- Generic37 claims76%
- Brand-name and other12 claims24%
Dr. Siu's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2023
- 2021
- 2023
- Claims for drugs CMS names
- 2021: 1442023: 1490%
Drugs named by CMS: 1 in 2023, 9 in 2021.
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. Chun Ting Siu takes part in Medicare
Dr. Siu 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Chun Ting Siu received $3,193 in industry payments from 2019 to 2025
CMS Open Payments shows 29 general payments to Dr. Siu from 18 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 83% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $489.
General payments to Dr. Siu by program year, 2019 to 2025
General payments to Dr. Siu by kind, 2019 to 2025
- Food and beverage$2,66183%
- Education$53217%
Companies that paid Dr. Siu the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chun Ting Siu graduated from Touro Un Col of Osteopathic Medicine, New York
Dr. Siu graduated from Touro Un Col of Osteopathic Medicine, New York in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chun Ting Siu'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 |
| 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. Chun Ting Siu
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. Chun Ting Siu's NPI number?
Dr. Chun Ting Siu's NPI number is 1871150011. It was assigned on May 23, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Chun Ting Siu?
Dr. Chun Ting Siu is a hematologist and oncologist in Stockton, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Chun Ting Siu practice?
Dr. Siu practices at 7373 West Ln, Stockton, CA 95210. Dr. Siu's primary practice is Permanente Medical Group Inc in Stockton, California. Dmand AI also links Dr. Siu to 2 group practices and clinics and 1 medical group.
What is Dr. Chun Ting Siu's office phone number?
The practice phone on file for Dr. Siu is (209) 476-2000.
What is Dr. Chun Ting Siu's medical license number?
Dr. Siu holds Pennsylvania license OT019021.
Which hospitals is Dr. Chun Ting Siu affiliated with?
Dr. Siu is affiliated with Kaiser Permanente South Sacramento Medical Center.
What medical group is Dr. Chun Ting Siu part of?
Dr. Siu is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Siu to 1 more medical group.
Does Dr. Chun Ting Siu accept Medicare?
Yes. CMS lists Dr. Siu as accepting Medicare assignment.
Where did Dr. Chun Ting Siu go to medical school?
Dr. Siu graduated from Touro Un Col of Osteopathic Medicine, New York in 2019.
What drugs does Dr. Chun Ting Siu prescribe most?
In 2023 Medicare Part D data, Dr. Siu's most prescribed drugs by claims were Alcohol Swab.
Has Dr. Chun Ting Siu received payments from drug or device companies?
CMS Open Payments shows $3,193 in general payments to Dr. Siu from 18 companies from 2019 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Chun Ting Siu been practicing?
Dr. Siu graduated from medical school in 2019, 7 years ago.
Selling to hematology and oncology practices?
See hematologists and oncologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card