Dr. Louise E. Ou-Yang, MD
- Medicare services, 2022
- 11
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 116
- Hospital affiliations
- 1
- Industry payments
- $237
- Practice address
- 500 South Maple Street, Waconia, MN 55387
- Practice phone
- Call (952) 442-2191
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ou-Yang's professional email, personal email and mobile number
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Dr. Louise E. Ou-Yang is an OB-GYN in Waconia, Minnesota
Dr. Ou-Yang practices at Ridgeview Medical Center in Waconia, Minnesota, part of Ridgeview Medical Center.
Dr. Ou-Yang's NPI, 1528009032, was assigned on June 8, 2006. Dr. Ou-Yang holds Michigan license 4301080694.
- NPI
- 1528009032NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901806660
- NPI enumeration date
- June 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (952) 442-2191
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Louise E. Ou-Yang practices at Ridgeview Medical Center in Waconia, Minnesota
Dr. Ou-Yang's primary practice is Ridgeview Medical Center, at 500 South Maple Street, Waconia, MN 55387 in Carver County. The practice phone is (952) 442-2191.
- Ridgeview Medical Center500 South Maple Street, Waconia, MN 55387 · Carver CountyPhone(952) 442-2191
Source: Dmand AI Affiliation Data
Dr. Louise E. Ou-Yang is affiliated with 2 sites of care and 2 medical groups
Dr. Ou-Yang's primary practice is Ridgeview Medical Center in Waconia, Minnesota, part of Ridgeview Medical Center. The medical group on file is Ridgeview Medical Center. Dmand AI also links Dr. Ou-Yang to 1 more group practice or clinic and 1 medical group, each named with a free account. Dr. Ou-Yang's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Louise E. Ou-Yang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ou-Yang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ridgeview Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Ridgeview Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Louise E. Ou-Yang is one of 719 OB-GYNs in Minnesota
Obstetrics and gynecology is Dr. Ou-Yang's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Ou-Yang is licensed in Michigan.
Specialties and state licenses
- Obstetrics and gynecology, MichiganPrimary
OB-GYNs near Dr. Ou-Yang
Counts of OB-GYNs 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. Louise E. Ou-Yang billed Medicare for 11 services in 2022
CMS data shows 11 Medicare services from Dr. Ou-Yang across 1 procedure code in 2022, all of them office visits, for 14 Medicare patients. Medicare paid $569 for them. Every service was in an office.
Dr. Ou-Yang compared with the Minnesota median for OB-GYNs, 2022
- Dr. Ou-Yang
- Minnesota median
- Medicare services
- 11vs 2352% below
- Medicare patients
- 14vs 2850% below
- Part D claims
- 27vs 26Close to median
Medians across 668 OB-GYNs in Minnesota with Dmand AI profiles that report each measure.
Dr. Ou-Yang's most billed Medicare procedure codes, 2022
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. Ou-Yang and other OB-GYNs in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Louise E. Ou-Yang treated 14 Medicare patients in 2024, average age 69
CMS counts 14 Medicare patients who saw Dr. Ou-Yang in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ou-Yang's median patient age at 40, with 100% women.
Dr. Ou-Yang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ou-Yang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women100%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Louise E. Ou-Yang wrote 116 Medicare Part D claims in 2024
In 2024, Dr. Ou-Yang wrote 116 Medicare Part D claims for 38 patients. 92% of them were for generic drugs. CMS names the drug for 27 of them, across 1 drug with 11 or more claims each, at $1,296 in total drug cost. In 2023, CMS named 23 claims across 1 drug.
Dr. Ou-Yang's Part D claims by kind of drug, 2024
- Generic107 claims92%
- Brand-name and other9 claims8%
Dr. Ou-Yang'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 232024: 2717%
Drugs named by CMS: 1 in 2024, 1 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 Dr. Louise E. Ou-Yang takes part in Medicare
Dr. Ou-Yang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of the uterus: 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. Louise E. Ou-Yang received $237 in industry payments from 2018 to 2020
CMS Open Payments shows 9 general payments to Dr. Ou-Yang from 9 drug and device companies from 2018 to 2020. Food and beverage make up the largest share, 94% of the total. CooperSurgical, Inc. paid the most, $100.
General payments to Dr. Ou-Yang by program year, 2018 to 2020
General payments to Dr. Ou-Yang by kind, 2018 to 2020
- Food and beverage$22194%
- Education$156%
Companies that paid Dr. Ou-Yang the most, 2018 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Louise E. Ou-Yang'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Louise E. Ou-Yang
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. Louise E. Ou-Yang's NPI number?
Dr. Louise E. Ou-Yang's NPI number is 1528009032. It was assigned on June 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Louise E. Ou-Yang?
Dr. Louise E. Ou-Yang is an OB-GYN in Waconia, Minnesota. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Louise E. Ou-Yang practice?
Dr. Ou-Yang practices at 500 South Maple Street, Waconia, MN 55387. Dr. Ou-Yang's primary practice is Ridgeview Medical Center in Waconia, Minnesota, part of Ridgeview Medical Center. Dmand AI also links Dr. Ou-Yang to 1 group practice or clinic and 1 medical group.
What is Dr. Louise E. Ou-Yang's office phone number?
The practice phone on file for Dr. Ou-Yang is (952) 442-2191.
What is Dr. Louise E. Ou-Yang's medical license number?
Dr. Ou-Yang holds Michigan license 4301080694.
Which hospitals is Dr. Louise E. Ou-Yang affiliated with?
Dr. Ou-Yang practices at Ridgeview Medical Center in Waconia, Minnesota.
What medical group is Dr. Louise E. Ou-Yang part of?
Dr. Ou-Yang is linked to Ridgeview Medical Center. Dmand AI links Dr. Ou-Yang to 1 more medical group.
Does Dr. Louise E. Ou-Yang accept Medicare?
Yes. CMS data shows Dr. Ou-Yang billed Medicare for 11 services in 2022, and Dr. Ou-Yang accepts Medicare assignment.
How many Medicare patients does Dr. Louise E. Ou-Yang see?
CMS counts 14 Medicare patients who saw Dr. Ou-Yang in 2024, with an average age of 69.
What services does Dr. Louise E. Ou-Yang bill to Medicare?
In 2022, Dr. Ou-Yang's most billed Medicare services were office visit, established patient (99213).
Show 3 more questionsShow fewer questions
What drugs does Dr. Louise E. Ou-Yang prescribe most?
In 2024 Medicare Part D data, Dr. Ou-Yang's most prescribed drugs by claims were Estradiol.
Has Dr. Louise E. Ou-Yang received payments from drug or device companies?
CMS Open Payments shows $237 in general payments to Dr. Ou-Yang from 9 companies from 2018 to 2020. The largest total came from CooperSurgical, Inc.
How long has Dr. Louise E. Ou-Yang been practicing?
Dr. Ou-Yang graduated from medical school in 2002, 24 years ago.
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