Brianna L. Thiessen

  • Riverside, CA
  • Emergency medicine physician
NPI1588018584PAC ID7517203995
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
Social profiles

Primary practice

Riverside Medical Center

Hospital · Riverside, California

Find Brianna Thiessen'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.

View contacts for free

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 and contact details
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.

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.

EHR by site
SiteEHR vendor and product
Riverside Medical CenterAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Brianna Thiessen practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across Kaiser Permanente and 6.2K+ hospitals, with verified contacts in the same login.

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, CaliforniaPrimaryLicense 20A20763 · taxonomy 207P00000X

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.

Medicare services, 202413
Medicare patients21
Paid by Medicare$1,148
Procedure codes1

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.

See all procedures by Brianna Thiessen

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.

Book a meeting

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.

Medicare patients, 202421
Average age63
Average risk score1.44

Chronic conditions among Brianna Thiessen's Medicare patients, 2024

  1. High blood pressure71%
  2. Arthritis52%
  3. 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.

Part D claims, 2024227
Drugs named by CMS7
Total drug cost$1,930
Part D patients147

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.

See all prescribing by Brianna Thiessen

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)

For MedTech and pharma teams

Find emergency medicine physicians like Brianna Thiessen by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

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.

Papers2

Brianna Thiessen's most frequent co-authors

Recent publications by Brianna Thiessen

See all 2 publications and co-authors

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.

How network discovery works

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.

See all payments to Brianna Thiessen

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.

  1. Medical schoolWesternU College of Osteopathic Medicine of the Pacific
  2. Board certified in emergency medicineAmerican Board of Emergency Medicine
  3. Board certified in 2023 - 2027CA State License
  4. Board certified in 2021 - 2024NY State License

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

  1. EPO2
  2. HMO1
  3. Medicaid1
  4. POS1
  5. PPO1

Source: Dmand AI Insurance Network Data

Sources for Brianna L. Thiessen's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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.

Selling to emergency medicine practices?

See emergency medicine physicians 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

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)