Dr. Chau Ton-That, DO
- Medicare services, 2024
- 737
- Medicare patients, 2024
- 112
- Part D claims, 2024
- 9,934
- Industry payments
- $15,428
- Affiliated sites
- 1
- Practice address
- 9533 Bolsa Ave, Westminster, CA 92683-5904
- Practice phone
- Call (714) 531-8720
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ton And Ton Mds
Physician office · Westminster, California
Find Dr. Ton-That'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. Chau Ton-That is a psychiatrist in Westminster, California
Dr. Ton-That practices at Ton And Ton Mds in Westminster, California.
Dr. Ton-That's NPI, 1205902301, was assigned on November 28, 2006. Dr. Ton-That graduated from WesternU College of Osteopathic Medicine of the Pacific in 1992. Dr. Ton-That holds California license 20A7177.
- NPI
- 1205902301NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072598085
- NPI enumeration date
- November 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 531-8720
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chau Ton-That practices at Ton and Ton Mds in Westminster, California
Dr. Ton-That's primary practice is Ton and Ton Mds, at 9533 Bolsa Ave, Westminster, CA 92683-5904. The practice phone is (714) 531-8720.
- Ton and Ton Mds9533 Bolsa Ave, Westminster, CA 92683-5904Phone(714) 531-8720
Source: Dmand AI Affiliation Data
Dr. Chau Ton-That is affiliated with 1 site of care
Dr. Ton-That's primary practice is Ton And Ton Mds in Westminster, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chau Ton-That's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ton-That practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ton And Ton Mds | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chau Ton-That is one of 6,803 psychiatrists in California
Psychiatry is Dr. Ton-That's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dmand AI has Dr. Ton-That's licenses on file in 3 states: California, District of Columbia and Maryland.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
- District of Columbia license
- Maryland license
Clinical focus
Dmand AI lists anxiety, bipolar disorder, depression and schizophrenia among the conditions Dr. Ton-That treats.
Psychiatrists near Dr. Ton-That
Counts of psychiatrists 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. Chau Ton-That billed Medicare for 737 services in 2024
CMS data shows 737 Medicare services from Dr. Ton-That across 2 procedure codes in 2024, for 112 Medicare patients. Medicare paid $58,122 for them. Every service was in an office.
Dr. Ton-That's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5982024: 70117%
- Tests and treatments
- 2023: 112024: 36227%
Dr. Ton-That compared with the California median for psychiatrists, 2024
- Dr. Ton-That
- California median
- Medicare services
- 737vs 1196.2 times
- Medicare patients
- 112vs 412.7 times
- Part D claims
- 9,840vs 14468.3 times
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Ton-That'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.
Need commercial claims for Dr. Ton-That?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ton-That and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chau Ton-That treated 112 Medicare patients in 2024, average age 69
CMS counts 112 Medicare patients who saw Dr. Ton-That in 2024. The largest group is 65 to 74, with 69 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.42, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ton-That's median patient age at 60, with 56% women.
Dr. Ton-That's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ton-That's Medicare patients by sex, 2024
- Women7365%
- Men3935%
Chronic conditions among Dr. Ton-That's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders55%
- Depression51%
- Diabetes47%
- Arthritis37%
- Chronic kidney disease35%
- Ischemic heart disease30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ton-That's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chau Ton-That wrote 9,934 Medicare Part D claims in 2024
In 2024, Dr. Ton-That wrote 9,934 Medicare Part D claims for 563 patients. 94% of them were for generic drugs. CMS names the drug for 9,840 of them, across 57 drugs with 11 or more claims each, at $992,955 in total drug cost. In 2023, CMS named 9,086 claims across 58 drugs.
Dr. Ton-That's Part D claims by kind of drug, 2024
- Generic9,353 claims94%
- Brand-name581 claims6%
Dr. Ton-That'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. Ton-That's Part D claims, 2024
- Antipsychotics, patients 65 and over23%2,241 of 9,934 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: 9,0862024: 9,8408%
Drugs named by CMS: 57 in 2024, 58 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. Chau Ton-That takes part in Medicare
Dr. Ton-That 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. Chau Ton-That received $15,428 in industry payments from 2016 to 2025
CMS Open Payments shows 549 general payments to Dr. Ton-That from 21 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $3,266.
General payments to Dr. Ton-That by program year, 2016 to 2025
General payments to Dr. Ton-That by kind, 2016 to 2025
- Food and beverage$15,04097%
- Education$3883%
Companies that paid Dr. Ton-That the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chau Ton-That graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Ton-That graduated from WesternU College of Osteopathic Medicine of the Pacific in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Chau Ton-That accepts plans from 8 insurance carriers
Dr. Ton-That is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- Humana
- Blue Cross Blue Shield of Massachusetts
- HCSC
- CMS Medicare
- Molina
Plan types Dr. Ton-That accepts, by number of carriers
- Medicare7
- PPO6
- HMO4
- EPO2
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Chau Ton-That'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 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) |
| 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. Chau Ton-That
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. Chau Ton-That's NPI number?
Dr. Chau Ton-That's NPI number is 1205902301. It was assigned on November 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chau Ton-That?
Dr. Chau Ton-That is a psychiatrist in Westminster, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Chau Ton-That practice?
Dr. Ton-That practices at 9533 Bolsa Ave, Westminster, CA 92683-5904. Dr. Ton-That's primary practice is Ton And Ton Mds in Westminster, California.
What is Dr. Chau Ton-That's office phone number?
The practice phone on file for Dr. Ton-That is (714) 531-8720.
What is Dr. Chau Ton-That's medical license number?
Dr. Ton-That holds California license 20A7177, one of the licenses on file in 3 states.
Which states has Dr. Chau Ton-That been licensed in?
Dmand AI has state licenses on file for Dr. Ton-That in California (1997 to 2027), District of Columbia (1997 to 2000) and Maryland (1996 to 1999).
Does Dr. Chau Ton-That accept Medicare?
Yes. CMS data shows Dr. Ton-That billed Medicare for 737 services in 2024, and Dr. Ton-That accepts Medicare assignment.
How many Medicare patients does Dr. Chau Ton-That see?
CMS counts 112 Medicare patients who saw Dr. Ton-That in 2024, with an average age of 69.
What services does Dr. Chau Ton-That bill to Medicare?
In 2024, Dr. Ton-That's most billed Medicare services were office visit, established patient (99213) and psychiatric service (90792).
Where did Dr. Chau Ton-That go to medical school?
Dr. Ton-That graduated from WesternU College of Osteopathic Medicine of the Pacific in 1992.
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What drugs does Dr. Chau Ton-That prescribe most?
In 2024 Medicare Part D data, Dr. Ton-That's most prescribed drugs by claims were Trazodone HCl, Sertraline HCl and Quetiapine Fumarate.
Has Dr. Chau Ton-That received payments from drug or device companies?
CMS Open Payments shows $15,428 in general payments to Dr. Ton-That from 21 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Chau Ton-That been practicing?
Dr. Ton-That graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Chau Ton-That accept?
Dr. Ton-That is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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