Dr. Stephen Tai Chen, MD
- Medicare services, 2024
- 698
- Medicare patients, 2024
- 161
- Part D claims, 2024
- 284
- MIPS score, 2024
- 88
- Hospital affiliations
- 1
- Practice address
- 150 Ucla Medical Plz, Los Angeles, CA 90024
- Practice phone
- Call (310) 267-9308
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Resnick Neuropsychiatric Hospital at UCLA
Los Angeles, California
Find Dr. Chen'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. Stephen Tai Chen is a psychiatrist in Los Angeles, California
Dr. Chen practices at Resnick Neuropsychiatric Hospital at UCLA in Los Angeles, California.
Dr. Chen's NPI, 1114941382, was assigned on July 27, 2006. Dr. Chen graduated from Tufts University School Of Medicine in 1992. Dr. Chen's California license number on file is G077912.
- NPI
- 1114941382NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113949587
- NPI enumeration date
- July 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 267-9308
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen Tai Chen practices at Resnick Neuropsychiatric Hospital at UCLA in Los Angeles, California
Dr. Chen's primary practice is Resnick Neuropsychiatric Hospital at UCLA, at 150 Ucla Medical Plz, Los Angeles, CA 90024 in Los Angeles County. The practice phone is (310) 267-9308.
- Resnick Neuropsychiatric Hospital at UCLA150 Ucla Medical Plz, Los Angeles, CA 90024 · Los Angeles CountyPhone(310) 267-9308
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephen Tai Chen is affiliated with 3 sites of care and 1 medical group
Dr. Chen's primary practice is Resnick Neuropsychiatric Hospital at UCLA in Los Angeles, California. Dr. Chen is also affiliated with UCLA Santa Monica Medical Center. The medical group on file is UCLA Health. Dmand AI also links Dr. Chen to 1 more group practice or clinic, 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. Stephen Tai Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Resnick Neuropsychiatric Hospital at UCLA | 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. Stephen Tai Chen is one of 6,803 psychiatrists in California
Psychiatry is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Chen is board certified in geriatric psychiatry by the American Board of Psychiatry and Neurology. Dr. Chen has a license on file in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Clinical focus
Dmand AI lists anxiety, bipolar disorder, dementia, depression, drug use disorders and insomnia among the conditions Dr. Chen treats.
Psychiatrists near Dr. Chen
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. Stephen Tai Chen billed Medicare for 698 services in 2024
CMS data shows 698 Medicare services from Dr. Chen across 7 procedure codes in 2024, for 161 Medicare patients. Medicare paid $57,609 for them.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6992024: 53823%
- Tests and treatments
- 2023: 712024: 160125%
Where Dr. Chen's Medicare services took place, 2024
- In an office548%
- In a facility64492%
Dr. Chen compared with the California median for psychiatrists, 2024
- Dr. Chen
- California median
- Medicare services
- 698vs 1195.9 times
- Medicare patients
- 161vs 413.9 times
- Part D claims
- 68vs 14453% below
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Chen'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen Tai Chen treated 161 Medicare patients in 2024, average age 73
CMS counts 161 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have anxiety, and 75% have depression. 36% are also on Medicaid. Their average risk score is 1.82, 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. Chen's median patient age at 57, with 54% women.
Dr. Chen's Medicare patients by age, 2024
Dr. Chen's Medicare patients by sex, 2024
- Women10364%
- Men5836%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- Anxiety75%
- Depression75%
- High blood pressure75%
- High cholesterol75%
- Mood disorders75%
- Arthritis54%
- Schizophrenia and other psychoses53%
- Bipolar disorder46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women54%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen Tai Chen wrote 284 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 284 Medicare Part D claims for 70 patients. 92% of them were for generic drugs. CMS names the drug for 68 of them, across 5 drugs with 11 or more claims each, at $986 in total drug cost. In 2023, CMS named 98 claims across 6 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic262 claims92%
- Brand-name22 claims8%
Dr. Chen'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. Chen's Part D claims, 2024
- Antipsychotics, patients 65 and over18%50 of 284 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: 982024: 6831%
Drugs named by CMS: 5 in 2024, 6 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. Stephen Tai Chen scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Chen for performance year 2024, reported as part of a group. Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Chen's MIPS scores, performance year 2024
- 88of 100Final score
- 76of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 56of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Stephen Tai Chen received $1,653 in industry payments from 2018 to 2024
CMS Open Payments shows 15 general payments to Dr. Chen from 3 drug and device companies from 2018 to 2024. Travel and lodging make up the largest share, 75% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,594.
General payments to Dr. Chen by program year, 2018 to 2024
General payments to Dr. Chen by kind, 2018 to 2024
- Travel and lodging$1,24775%
- Food and beverage$40625%
Companies that paid Dr. Chen the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen Tai Chen graduated from Tufts University School Of Medicine
Dr. Chen graduated from Tufts University School Of Medicine in 1992.
- Medical school
- Board certified in geriatric psychiatry
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Stephen Tai Chen accepts plans from 12 insurance carriers
Dr. Chen is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Regence Health Plans
- Alliant Health Plans
- +4 more carriersWith a free account
Plan types Dr. Chen accepts, by number of carriers
- PPO8
- HMO7
- Medicare7
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Stephen Tai Chen'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 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)Clinician Public Reporting: Overall MIPS Performance (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. Stephen Tai Chen
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. Stephen Tai Chen's NPI number?
Dr. Stephen Tai Chen's NPI number is 1114941382. It was assigned on July 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen Tai Chen?
Dr. Stephen Tai Chen is a psychiatrist in Los Angeles, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Stephen Tai Chen practice?
Dr. Chen practices at 150 Ucla Medical Plz, Los Angeles, CA 90024. Dr. Chen's primary practice is Resnick Neuropsychiatric Hospital at UCLA in Los Angeles, California. Dmand AI also links Dr. Chen to 1 group practice or clinic.
What is Dr. Stephen Tai Chen's office phone number?
The practice phone on file for Dr. Chen is (310) 267-9308.
What is Dr. Stephen Tai Chen's medical license number?
Dr. Chen's California license number on file is G077912.
Which hospitals is Dr. Stephen Tai Chen affiliated with?
Dr. Chen is affiliated with UCLA Santa Monica Medical Center.
What medical group is Dr. Stephen Tai Chen part of?
Dr. Chen is linked to UCLA Health.
Does Dr. Stephen Tai Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 698 services in 2024, and Dr. Chen accepts Medicare assignment.
Does Dr. Stephen Tai Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.
What is Dr. Stephen Tai Chen's MIPS score?
Dr. Chen's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Stephen Tai Chen see?
CMS counts 161 Medicare patients who saw Dr. Chen in 2024, with an average age of 73.
Is Dr. Stephen Tai Chen board certified?
Yes. Dr. Chen is board certified in geriatric psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Stephen Tai Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were hospital inpatient care (99232), psychiatric service (90870) and office visit, established patient (99214).
Where did Dr. Stephen Tai Chen go to medical school?
Dr. Chen graduated from Tufts University School Of Medicine in 1992.
What drugs does Dr. Stephen Tai Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Trazodone HCl, Gabapentin and Quetiapine Fumarate.
Has Dr. Stephen Tai Chen received payments from drug or device companies?
CMS Open Payments shows $1,653 in general payments to Dr. Chen from 3 companies from 2018 to 2024. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Stephen Tai Chen been practicing?
Dr. Chen graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Stephen Tai Chen accept?
Dr. Chen is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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