Brianna L. Thiessen
- Medicare services, 2024
- 13
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 227
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 10800 Magnolia Avenue, Riverside, CA 92505
- Practice phone
- Call (951) 353-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Brianna Thiessen's professional email, personal email and mobile number
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Brianna L. Thiessen is an emergency medicine physician in Riverside, California
Brianna Thiessen practices at Riverside Medical Center in Riverside, California, part of Kaiser Permanente.
Brianna Thiessen's NPI, 1588018584, was assigned on April 16, 2016. Brianna Thiessen graduated from WesternU College of Osteopathic Medicine of the Pacific in 2017. Brianna Thiessen holds California license 20A20763.
- NPI
- 1588018584NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517203995
- NPI enumeration date
- April 16, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 353-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Brianna L. Thiessen practices at Riverside Medical Center in Riverside, California
Brianna Thiessen's primary practice is Riverside Medical Center, at 10800 Magnolia Avenue, Riverside, CA 92505 in Riverside County. The practice phone is (951) 353-2000.
- Riverside Medical Center10800 Magnolia Avenue, Riverside, CA 92505 · Riverside CountyPhone(951) 353-2000
Source: Dmand AI Affiliation Data
Brianna L. Thiessen is affiliated with 1 site of care and 1 medical group
Brianna Thiessen's primary practice is Riverside Medical Center in Riverside, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Brianna L. Thiessen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Brianna Thiessen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Brianna L. Thiessen is one of 7,423 emergency medicine physicians in California
Emergency medicine is Brianna Thiessen's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Brianna Thiessen is board certified in emergency medicine by the American Board of Emergency Medicine. Brianna Thiessen is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Brianna Thiessen
Counts of emergency medicine physicians 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
Brianna L. Thiessen billed Medicare for 13 services in 2024
CMS data shows 13 Medicare services from Brianna Thiessen across 1 procedure code in 2024, for 21 Medicare patients. Medicare paid $1,148 for them. Every service was in a facility, such as a hospital, rather than an office.
Brianna Thiessen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5142024: 1397%
Brianna Thiessen compared with the California median for emergency medicine physicians, 2024
- Brianna Thiessen
- California median
- Medicare services
- 13vs 26595% below
- Medicare patients
- 21vs 24391% below
- Part D claims
- 122vs 6297% above
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Brianna Thiessen'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 Brianna Thiessen?
Medicare shows one payer. Book a meeting to get commercial claims data for Brianna Thiessen and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Brianna L. Thiessen treated 21 Medicare patients in 2024, average age 63
CMS counts 21 Medicare patients who saw Brianna Thiessen in 2024. 71% of them have high blood pressure, and 52% have arthritis. Their average risk score is 1.44, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Brianna Thiessen's median patient age at 38, with 56% women.
Chronic conditions among Brianna Thiessen's Medicare patients, 2024
- High blood pressure71%
- Arthritis52%
- High cholesterol52%
Share of Medicare patients with each condition. A patient can have several.
Brianna Thiessen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Brianna L. Thiessen wrote 227 Medicare Part D claims in 2024
In 2024, Brianna Thiessen wrote 227 Medicare Part D claims for 147 patients. 91% of them were for generic drugs. CMS names the drug for 122 of them, across 7 drugs with 11 or more claims each, at $1,930 in total drug cost. In 2023, CMS named 179 claims across 9 drugs.
Brianna Thiessen's Part D claims by kind of drug, 2024
- Generic207 claims91%
- Brand-name20 claims9%
Brianna Thiessen'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 Brianna Thiessen's Part D claims, 2024
- Opioids12%28 of 227 claims
- Antibiotics39%89 of 227 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: 1792024: 12232%
Drugs named by CMS: 7 in 2024, 9 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 Brianna L. Thiessen takes part in Medicare
Brianna Thiessen 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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Brianna L. Thiessen has 2 publications on record
Dmand AI links 2 papers to Brianna Thiessen in 2022. Brianna Thiessen's most frequent co-authors are Paxton Pyee Kyaw Aung, DO and Christine Hickey, DO.
Brianna Thiessen's most frequent co-authors
Recent publications by Brianna Thiessen
Pediatr Emerg Care
See who Brianna Thiessen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Brianna Thiessen works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Brianna L. Thiessen received $234 in industry payments from 2019 to 2022
CMS Open Payments shows 7 general payments to Brianna Thiessen from 3 drug and device companies from 2019 to 2022. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $110.
General payments to Brianna Thiessen by program year, 2019 to 2022
Companies that paid Brianna Thiessen the most, 2019 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Brianna L. Thiessen graduated from WesternU College of Osteopathic Medicine of the Pacific
Brianna Thiessen graduated from WesternU College of Osteopathic Medicine of the Pacific in 2017.
- Medical school
- Board certified in emergency medicine
- Board certified in 2023 - 2027
- Board certified in 2021 - 2024
Source: Dmand AI Professional Profile Data
Brianna L. Thiessen accepts plans from 3 insurance carriers
Brianna Thiessen is in network with 3 carriers, including Kaiser Permanente, MVP Health Care and RI State Medicaid. EPO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Kaiser Permanente
- MVP Health Care
- RI State Medicaid
Plan types Brianna Thiessen accepts, by number of carriers
- EPO2
- HMO1
- Medicaid1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Brianna L. Thiessen'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Brianna L. Thiessen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Brianna L. Thiessen's NPI number?
Brianna L. Thiessen's NPI number is 1588018584. It was assigned on April 16, 2016, and it is active in the NPI Registry.
What does Brianna L. Thiessen specialize in?
Brianna L. Thiessen is an emergency medicine physician in Riverside, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Brianna L. Thiessen practice?
Brianna Thiessen practices at 10800 Magnolia Avenue, Riverside, CA 92505. Brianna Thiessen's primary practice is Riverside Medical Center in Riverside, California, part of Kaiser Permanente.
What is Brianna L. Thiessen's office phone number?
The practice phone on file for Brianna Thiessen is (951) 353-2000.
What is Brianna L. Thiessen's medical license number?
Brianna Thiessen holds California license 20A20763.
Which hospitals is Brianna L. Thiessen affiliated with?
Brianna Thiessen practices at Riverside Medical Center in Riverside, California.
What medical group is Brianna L. Thiessen part of?
Brianna Thiessen is linked to Southern California Permanente Medical Group.
Does Brianna L. Thiessen accept Medicare?
Yes. CMS data shows Brianna Thiessen billed Medicare for 13 services in 2024, and Brianna Thiessen accepts Medicare assignment.
How many Medicare patients does Brianna L. Thiessen see?
CMS counts 21 Medicare patients who saw Brianna Thiessen in 2024, with an average age of 63.
Is Brianna L. Thiessen board certified?
Yes. Brianna Thiessen is board certified in emergency medicine by the American Board of Emergency Medicine.
Show 8 more questionsShow fewer questions
What services does Brianna L. Thiessen bill to Medicare?
In 2024, Brianna Thiessen's most billed Medicare services were emergency department visit (99284).
Where did Brianna L. Thiessen go to medical school?
Brianna Thiessen graduated from WesternU College of Osteopathic Medicine of the Pacific in 2017.
What drugs does Brianna L. Thiessen prescribe most?
In 2024 Medicare Part D data, Brianna Thiessen's most prescribed drugs by claims were Cefpodoxime Proxetil, Oxycodone HCl and Ondansetron ODT.
Has Brianna L. Thiessen received payments from drug or device companies?
CMS Open Payments shows $234 in general payments to Brianna Thiessen from 3 companies from 2019 to 2022. The largest total came from Genentech, Inc.
How long has Brianna L. Thiessen been practicing?
Brianna Thiessen graduated from medical school in 2017, 9 years ago.
Does Brianna L. Thiessen do research?
Dmand AI links 2 publications to Brianna Thiessen.
Who does Brianna L. Thiessen publish with?
Brianna Thiessen's most frequent co-authors are Paxton Pyee Kyaw Aung, DO (1 shared paper) and Christine Hickey, DO (1 shared paper).
What insurance does Brianna L. Thiessen accept?
Brianna Thiessen is in network with 3 carriers, including Kaiser Permanente, MVP Health Care and RI State Medicaid. EPO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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