Dr. Annika Van Wieren, MD
- Medicare services, 2023
- 63
- Medicare patients, 2024
- 20
- Hospital affiliations
- 1
- Industry payments
- $560
- Medical groups
- 3
- Practice address
- 1201 W La Veta Ave, Orange, CA 92868
- Practice phone
- Call (714) 997-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Children's Hospital of Orange County Main Campus
Orange, California
Find Dr. Van Wieren's professional email, personal email and mobile number
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Dr. Annika Van Wieren is an emergency medicine physician in Orange, California
Dr. Van Wieren practices at Children's Hospital of Orange County Main Campus in Orange, California.
Dr. Van Wieren's NPI, 1750901658, was assigned on April 21, 2020. Dr. Van Wieren graduated from Wayne State University School of Medicine in 2020. Dr. Van Wieren holds Michigan license 4351046510.
- NPI
- 1750901658NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830520147
- NPI enumeration date
- April 21, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 997-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Annika Van Wieren practices at Children's Hospital of Orange County Main Campus in Orange, California
Dr. Van Wieren's primary practice is Children's Hospital of Orange County Main Campus, at 1201 W La Veta Ave, Orange, CA 92868 in Orange County. The practice phone is (714) 997-3000.
- Children's Hospital of Orange County Main Campus1201 W La Veta Ave, Orange, CA 92868 · Orange CountyPhone(714) 997-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Annika Van Wieren is affiliated with 2 sites of care and 3 medical groups
Dr. Van Wieren's primary practice is Children's Hospital of Orange County Main Campus in Orange, California. Dr. Van Wieren is also affiliated with Rady Children's Hospital - Orange County. The medical group on file is Emergency Medicine Specialists of Orange County. Dmand AI also links Dr. Van Wieren to 2 more medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Annika Van Wieren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Van Wieren practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Children's Hospital of Orange County Main Campus | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Annika Van Wieren is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Van Wieren's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Van Wieren is licensed in Michigan.
Specialties and state licenses
- Emergency medicine, MichiganPrimary
Emergency medicine physicians near Dr. Van Wieren
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
Dr. Annika Van Wieren billed Medicare for 63 services in 2023
CMS data shows 63 Medicare services from Dr. Van Wieren across 2 procedure codes in 2023, for 20 Medicare patients. Medicare paid $7,836 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Van Wieren compared with the California median for emergency medicine physicians, 2023
- Dr. Van Wieren
- California median
- Medicare services
- 63vs 26576% below
- Medicare patients
- 20vs 24392% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Van Wieren's most billed Medicare procedure codes, 2023
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. Van Wieren and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Annika Van Wieren treated 20 Medicare patients in 2024, average age 66
CMS counts 20 Medicare patients who saw Dr. Van Wieren in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.66, 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. Van Wieren's median patient age at 45, with 70% women.
Chronic conditions among Dr. Van Wieren's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders70%
- Anxiety60%
- Depression55%
Share of Medicare patients with each condition. A patient can have several.
Dr. Van Wieren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women70%
- Men30%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Annika Van Wieren takes part in Medicare
Dr. Van Wieren 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. Annika Van Wieren received $560 in industry payments from 2022 to 2023
CMS Open Payments shows 6 general payments to Dr. Van Wieren from 5 drug and device companies from 2022 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $215.
General payments to Dr. Van Wieren by program year, 2022 to 2023
Companies that paid Dr. Van Wieren the most, 2022 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Annika Van Wieren graduated from Wayne State University School of Medicine
Dr. Van Wieren graduated from Wayne State University School of Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Annika Van Wieren'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 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) |
| 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 |
| 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. Annika Van Wieren
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. Annika Van Wieren's NPI number?
Dr. Annika Van Wieren's NPI number is 1750901658. It was assigned on April 21, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Annika Van Wieren?
Dr. Annika Van Wieren is an emergency medicine physician in Orange, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Annika Van Wieren practice?
Dr. Van Wieren practices at 1201 W La Veta Ave, Orange, CA 92868. Dr. Van Wieren's primary practice is Children's Hospital of Orange County Main Campus in Orange, California. Dmand AI also links Dr. Van Wieren to 2 medical groups.
What is Dr. Annika Van Wieren's office phone number?
The practice phone on file for Dr. Van Wieren is (714) 997-3000.
What is Dr. Annika Van Wieren's medical license number?
Dr. Van Wieren holds Michigan license 4351046510.
Which hospitals is Dr. Annika Van Wieren affiliated with?
Dr. Van Wieren is affiliated with Rady Children's Hospital - Orange County.
What medical group is Dr. Annika Van Wieren part of?
Dr. Van Wieren is linked to Emergency Medicine Specialists of Orange County. Dmand AI links Dr. Van Wieren to 2 more medical groups.
Does Dr. Annika Van Wieren accept Medicare?
Yes. CMS data shows Dr. Van Wieren billed Medicare for 63 services in 2023, and Dr. Van Wieren accepts Medicare assignment.
How many Medicare patients does Dr. Annika Van Wieren see?
CMS counts 20 Medicare patients who saw Dr. Van Wieren in 2024, with an average age of 66.
What services does Dr. Annika Van Wieren bill to Medicare?
In 2023, Dr. Van Wieren's most billed Medicare services were emergency department visit (99285) and emergency department visit (99284).
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Where did Dr. Annika Van Wieren go to medical school?
Dr. Van Wieren graduated from Wayne State University School of Medicine in 2020.
Has Dr. Annika Van Wieren received payments from drug or device companies?
CMS Open Payments shows $560 in general payments to Dr. Van Wieren from 5 companies from 2022 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Annika Van Wieren been practicing?
Dr. Van Wieren graduated from medical school in 2020, 6 years ago.
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