Dr. Richard Z. Tsai, MD
- Medicare services, 2024
- 705
- Medicare patients, 2024
- 239
- Part D claims, 2024
- 8,140
- Hospital affiliations
- 1
- Industry payments
- $16
- Practice address
- 417 Sw 117th Ave, Portland, OR 97225
- Practice phone
- Call (503) 216-9400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Providence Medical Group
Portland, Oregon
Find Dr. Tsai'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. Richard Z. Tsai is an internist in Portland, Oregon
Dr. Tsai practices at Providence Medical Group in Portland, Oregon.
Dr. Tsai's NPI, 1558387555, was assigned on July 14, 2006. Dr. Tsai graduated from Washington University School of Medicine in 1998. Dr. Tsai holds Oregon license MD22952.
- NPI
- 1558387555NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789711904
- NPI enumeration date
- July 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 216-9400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Richard Z. Tsai practices at Providence Medical Group in Portland, Oregon
Dr. Tsai's primary practice is Providence Medical Group, at 417 Sw 117th Ave, Portland, OR 97225 in Washington County. The practice phone is (503) 216-9400.
- Providence Medical Group417 Sw 117th Ave, Portland, OR 97225 · Washington CountyPhone(503) 216-9400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Richard Z. Tsai is affiliated with 5 sites of care and 1 medical group
Dr. Tsai's primary practice is Providence Medical Group in Portland, Oregon. Dr. Tsai is also affiliated with Providence St. Vincent Medical Center. The medical group on file is Providence Medical Group, Oregon. Dmand AI also links Dr. Tsai to 1 more group practice or clinic, 1 home health agency and 1 hospice, 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. Richard Z. Tsai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tsai practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Medical Group | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Richard Z. Tsai is one of 1,680 internists in Oregon
Internal medicine is Dr. Tsai's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tsai is licensed in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Internists near Dr. Tsai
Counts of internists 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. Richard Z. Tsai billed Medicare for 705 services in 2024
CMS data shows 705 Medicare services from Dr. Tsai across 12 procedure codes in 2024, for 239 Medicare patients. Medicare paid $29,456 for them. Every service was in an office.
Dr. Tsai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1642024: 29882%
- Office and hospital visits
- 2023: 2552024: 2799%
- Tests and treatments
- 2023: 1302024: 1282%
Dr. Tsai compared with the Oregon median for internists, 2024
- Dr. Tsai
- Oregon median
- Medicare services
- 705vs 3002.4 times
- Medicare patients
- 239vs 13281% above
- Part D claims
- 7,340vs 22233.1 times
Medians across 1,791 internists in Oregon with Dmand AI profiles that report each measure.
Dr. Tsai'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. Tsai and other internists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Richard Z. Tsai treated 239 Medicare patients in 2024, average age 77
CMS counts 239 Medicare patients who saw Dr. Tsai in 2024. The largest group is 75 to 84, with 99 patients. 70% of them have high cholesterol, and 62% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tsai's median patient age at 76, with 45% women.
Dr. Tsai's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tsai's Medicare patients by sex, 2024
- Women11347%
- Men12653%
Chronic conditions among Dr. Tsai's Medicare patients, 2024
- High cholesterol70%
- High blood pressure62%
- Arthritis39%
- Atrial fibrillation23%
- Diabetes23%
- Anxiety22%
- Chronic kidney disease22%
- Ischemic heart disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tsai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Richard Z. Tsai wrote 8,140 Medicare Part D claims in 2024
In 2024, Dr. Tsai wrote 8,140 Medicare Part D claims for 618 patients. 89% of them were for generic drugs. CMS names the drug for 7,340 of them, across 134 drugs with 11 or more claims each, at $524,763 in total drug cost. In 2023, CMS named 7,784 claims across 139 drugs.
Dr. Tsai's Part D claims by kind of drug, 2024
- Generic7,277 claims89%
- Brand-name828 claims10%
- Other35 claims0%
Dr. Tsai'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. Tsai's Part D claims, 2024
- Opioids5%377 of 8,140 claims
- Antibiotics1%118 of 8,140 claims
- Antipsychotics, patients 65 and over1%41 of 8,140 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: 7,7842024: 7,3406%
Drugs named by CMS: 134 in 2024, 139 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. Richard Z. Tsai offers telehealth to Medicare patients
Dr. Tsai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tsai as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Richard Z. Tsai received $16 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Tsai from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Medtronic Vascular, Inc. paid the most, $16.
Companies that paid Dr. Tsai the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Richard Z. Tsai graduated from Washington University School of Medicine
Dr. Tsai graduated from Washington University School of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Richard Z. Tsai'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)Doctors and Clinicians Utilization Data (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. Richard Z. Tsai
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. Richard Z. Tsai's NPI number?
Dr. Richard Z. Tsai's NPI number is 1558387555. It was assigned on July 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Richard Z. Tsai?
Dr. Richard Z. Tsai is an internist in Portland, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Richard Z. Tsai practice?
Dr. Tsai practices at 417 Sw 117th Ave, Portland, OR 97225. Dr. Tsai's primary practice is Providence Medical Group in Portland, Oregon. Dmand AI also links Dr. Tsai to 1 group practice or clinic, 1 home health agency and 1 hospice.
What is Dr. Richard Z. Tsai's office phone number?
The practice phone on file for Dr. Tsai is (503) 216-9400.
What is Dr. Richard Z. Tsai's medical license number?
Dr. Tsai holds Oregon license MD22952.
Which hospitals is Dr. Richard Z. Tsai affiliated with?
Dr. Tsai is affiliated with Providence St. Vincent Medical Center.
What medical group is Dr. Richard Z. Tsai part of?
Dr. Tsai is linked to Providence Medical Group, Oregon.
Does Dr. Richard Z. Tsai accept Medicare?
Yes. CMS data shows Dr. Tsai billed Medicare for 705 services in 2024, and Dr. Tsai accepts Medicare assignment.
Does Dr. Richard Z. Tsai offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tsai as offering telehealth services.
How many Medicare patients does Dr. Richard Z. Tsai see?
CMS counts 239 Medicare patients who saw Dr. Tsai in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Richard Z. Tsai bill to Medicare?
In 2024, Dr. Tsai's most billed Medicare services were medicare service (G2211), office visit, established patient (99213) and medicare service (G0439).
Where did Dr. Richard Z. Tsai go to medical school?
Dr. Tsai graduated from Washington University School of Medicine in 1998.
What drugs does Dr. Richard Z. Tsai prescribe most?
In 2024 Medicare Part D data, Dr. Tsai's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Richard Z. Tsai received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Tsai from 1 company from 2019 to 2019. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Richard Z. Tsai been practicing?
Dr. Tsai graduated from medical school in 1998, 28 years ago.
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