Dr. Nancy Jane Niemann Royer, MD
- Medicare services, 2024
- 81
- Medicare patients, 2024
- 90
- Part D claims, 2024
- 77
- Medical group
- 1
- State license
- 1
- Practice address
- 2 Progress Point Pkwy, O Fallon, MO 63368
- Practice phone
- Call (636) 344-2273
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Niemann Royer'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. Nancy Jane Niemann Royer is an emergency medicine physician in O Fallon, Missouri
Dr. Niemann Royer practices at Progress West Hospital in O Fallon, Missouri, part of BJC Health.
Dr. Niemann Royer's NPI, 1326094145, was assigned on May 25, 2006. Dr. Niemann Royer holds Missouri license R9E46.
- NPI
- 1326094145NPI Registry (opens in a new tab)
- NPI enumeration date
- May 25, 2006
- NPI status
- Active
- Practice phone
- (636) 344-2273
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Nancy Jane Niemann Royer practices at Progress West Hospital in O Fallon, Missouri
Dr. Niemann Royer's primary practice is Progress West Hospital, at 2 Progress Point Pkwy, O Fallon, MO 63368 in St. Charles County. The practice phone is (636) 344-2273.
- Progress West Hospital2 Progress Point Pkwy, O Fallon, MO 63368 · St. Charles CountyPhone(636) 344-2273
Source: Dmand AI Affiliation Data
Dr. Nancy Jane Niemann Royer is affiliated with 1 medical group
Dr. Niemann Royer's primary practice is Progress West Hospital in O Fallon, Missouri, part of BJC Health. The medical group on file is Southeastern Emergency Physicians of Memphis LLC.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nancy Jane Niemann Royer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niemann Royer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Progress West Hospital | 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 BJC Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nancy Jane Niemann Royer is one of 1,063 emergency medicine physicians in Missouri
Emergency medicine is Dr. Niemann Royer's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Niemann Royer is licensed in Missouri.
Specialties and state licenses
- Emergency medicine, MissouriPrimary
Emergency medicine physicians near Dr. Niemann Royer
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. Nancy Jane Niemann Royer billed Medicare for 81 services in 2024
CMS data shows 81 Medicare services from Dr. Niemann Royer across 2 procedure codes in 2024, for 90 Medicare patients. Medicare paid $8,999 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Niemann Royer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 602024: 8135%
Dr. Niemann Royer compared with the Missouri median for emergency medicine physicians, 2024
- Dr. Niemann Royer
- Missouri median
- Medicare services
- 81vs 25268% below
- Medicare patients
- 90vs 26266% below
- Part D claims
- 39vs 6943% below
Medians across 1,092 emergency medicine physicians in Missouri with Dmand AI profiles that report each measure.
Dr. Niemann Royer'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 Dr. Niemann Royer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Niemann Royer and other emergency medicine physicians in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nancy Jane Niemann Royer treated 90 Medicare patients in 2024, average age 74
CMS counts 90 Medicare patients who saw Dr. Niemann Royer in 2024. The largest group is 75 to 84, with 32 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.74, 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. Niemann Royer's median patient age at 73, with 100% women.
Dr. Niemann Royer's Medicare patients by age, 2024
Dr. Niemann Royer's Medicare patients by sex, 2024
- Women5056%
- Men4044%
Chronic conditions among Dr. Niemann Royer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Mood disorders51%
- Anxiety47%
- Depression47%
- Ischemic heart disease46%
- Atrial fibrillation36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Niemann Royer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
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. Nancy Jane Niemann Royer wrote 77 Medicare Part D claims in 2024
In 2024, Dr. Niemann Royer wrote 77 Medicare Part D claims for 53 patients. 91% of them were for generic drugs. CMS names the drug for 39 of them, across 3 drugs with 11 or more claims each, at $149 in total drug cost. In 2021, CMS named 59 claims across 4 drugs.
Dr. Niemann Royer's Part D claims by kind of drug, 2024
- Generic70 claims91%
- Brand-name and other7 claims9%
Dr. Niemann Royer's most prescribed drugs by claims, 2022
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. Niemann Royer's Part D claims, 2024
- Opioids26%20 of 77 claims
- Antibiotics22%17 of 77 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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 592022: 3934%
Drugs named by CMS: 3 in 2022, 4 in 2021.
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Dr. Nancy Jane Niemann Royer'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) |
| 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. Nancy Jane Niemann Royer
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. Nancy Jane Niemann Royer's NPI number?
Dr. Nancy Jane Niemann Royer's NPI number is 1326094145. It was assigned on May 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nancy Jane Niemann Royer?
Dr. Nancy Jane Niemann Royer is an emergency medicine physician in O Fallon, Missouri. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Nancy Jane Niemann Royer practice?
Dr. Niemann Royer practices at 2 Progress Point Pkwy, O Fallon, MO 63368. Dr. Niemann Royer's primary practice is Progress West Hospital in O Fallon, Missouri, part of BJC Health.
What is Dr. Nancy Jane Niemann Royer's office phone number?
The practice phone on file for Dr. Niemann Royer is (636) 344-2273.
What is Dr. Nancy Jane Niemann Royer's medical license number?
Dr. Niemann Royer holds Missouri license R9E46.
Which hospitals is Dr. Nancy Jane Niemann Royer affiliated with?
Dr. Niemann Royer practices at Progress West Hospital in O Fallon, Missouri.
What medical group is Dr. Nancy Jane Niemann Royer part of?
Dr. Niemann Royer is linked to Southeastern Emergency Physicians of Memphis LLC.
Does Dr. Nancy Jane Niemann Royer accept Medicare?
Yes. CMS data shows Dr. Niemann Royer billed Medicare for 81 services in 2024.
How many Medicare patients does Dr. Nancy Jane Niemann Royer see?
CMS counts 90 Medicare patients who saw Dr. Niemann Royer in 2024, with an average age of 74.
What services does Dr. Nancy Jane Niemann Royer bill to Medicare?
In 2024, Dr. Niemann Royer's most billed Medicare services were emergency department visit (99285) and emergency department visit (99284).
What drugs does Dr. Nancy Jane Niemann Royer prescribe most?
In 2022 Medicare Part D data, Dr. Niemann Royer's most prescribed drugs by claims were Tramadol HCl, Hydrocodone-Acetaminophen and Prednisone.
How long has Dr. Nancy Jane Niemann Royer been practicing?
Dr. Niemann Royer's NPI was assigned in 2006.
Selling to emergency medicine practices?
See emergency medicine physicians in Missouri 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