Dr. Nathan Andrew Neilson, MD
- Medicare services, 2024
- 195
- Medicare patients, 2024
- 64
- Part D claims, 2024
- 470
- Publications
- 3
- Hospital affiliations
- 2
- Practice address
- One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110
- Practice phone
- Call (314) 747-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Neilson'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. Nathan Andrew Neilson is a hospitalist in Saint Louis, Missouri
Dr. Neilson practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
Dr. Neilson's NPI, 1477121176, was assigned on June 17, 2021. Dr. Neilson graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2021. Dr. Neilson holds Missouri license 2024014678.
- NPI
- 1477121176NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830636687
- NPI enumeration date
- June 17, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 747-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nathan Andrew Neilson practices at 2 locations in Saint Louis, Missouri
Dr. Neilson's primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. Neilson also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.
- Barnes-Jewish HospitalPrimaryOne Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 · St. Louis CityPhone(314) 747-3000
- Barnes-Jewish Hospital1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 747-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Nathan Andrew Neilson is affiliated with 2 sites of care and 1 medical group
Dr. Neilson's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dr. Neilson is also affiliated with Barnes-Jewish West County Hospital. The medical group on file is WashU Medicine Psychiatry.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nathan Andrew Neilson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Neilson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barnes-Jewish Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Nathan Andrew Neilson is one of 735 hospitalists in Missouri
Hospitalist is Dr. Neilson's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Neilson is licensed in Missouri.
Specialties and state licenses
- Hospitalist, MissouriPrimary
Hospitalists near Dr. Neilson
Counts of hospitalists 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. Nathan Andrew Neilson billed Medicare for 195 services in 2024
CMS data shows 195 Medicare services from Dr. Neilson across 3 procedure codes in 2024, for 64 Medicare patients. Medicare paid $15,943 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Neilson's Medicare services by type, 2024
- Office and hospital visits152
- Other services43
Dr. Neilson compared with the Missouri median for hospitalists, 2024
- Dr. Neilson
- Missouri median
- Medicare services
- 195vs 43455% below
- Medicare patients
- 64vs 19166% below
- Part D claims
- 220vs 982.2 times
Medians across 659 hospitalists in Missouri with Dmand AI profiles that report each measure.
Dr. Neilson'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. Neilson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Neilson and other hospitalists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathan Andrew Neilson treated 64 Medicare patients in 2024, average age 69
CMS counts 64 Medicare patients who saw Dr. Neilson in 2024. The largest group is 65 to 74, with 22 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 39% are also on Medicaid. Their average risk score is 3.28, 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. Neilson's median patient age at 65, with 53% women.
Dr. Neilson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Neilson's Medicare patients by sex, 2024
- Women3047%
- Men3453%
Chronic conditions among Dr. Neilson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Chronic kidney disease58%
- Heart failure58%
- Diabetes53%
- Anxiety47%
- Mood disorders45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Neilson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan Andrew Neilson wrote 470 Medicare Part D claims in 2024
In 2024, Dr. Neilson wrote 470 Medicare Part D claims for 73 patients. 81% of them were for generic drugs. CMS names the drug for 220 of them, across 12 drugs with 11 or more claims each, at $18,348 in total drug cost. In 2023, CMS named 490 claims across 23 drugs.
Dr. Neilson's Part D claims by kind of drug, 2024
- Generic381 claims81%
- Brand-name77 claims16%
- Other12 claims3%
Dr. Neilson'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 Dr. Neilson's Part D claims, 2024
- Opioids3%13 of 470 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: 4902024: 22055%
Drugs named by CMS: 12 in 2024, 23 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. Nathan Andrew Neilson takes part in Medicare
Dr. Neilson 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. Nathan Andrew Neilson has 3 publications on record
Dmand AI links 3 papers to Dr. Neilson, published from 2016 to 2021. Dr. Neilson has published most often in Cureus. Dr. Neilson's most frequent co-authors are Mansoor Ahmad, MD, Sudhir Mungee, MD and Udit Rajeev Joshi, FACC, MD.
Dr. Neilson's papers by year, 2016 to 2021
Dr. Neilson's most frequent co-authors
- Mansoor Ahmad, MD2 shared papers
- Sudhir Mungee, MD2 shared papers
- Udit Rajeev Joshi, FACC, MD1 shared paper
Recent publications by Dr. Neilson
See who Dr. Neilson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Neilson works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nathan Andrew Neilson graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Neilson graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2021.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathan Andrew Neilson'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 Affiliation DataDmand AI Practice 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 |
| 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. Nathan Andrew Neilson
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. Nathan Andrew Neilson's NPI number?
Dr. Nathan Andrew Neilson's NPI number is 1477121176. It was assigned on June 17, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan Andrew Neilson?
Dr. Nathan Andrew Neilson is a hospitalist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Nathan Andrew Neilson practice?
Dr. Neilson practices at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110. Dr. Neilson also practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. Dr. Neilson's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
What is Dr. Nathan Andrew Neilson's office phone number?
The practice phone on file for Dr. Neilson is (314) 747-3000.
What is Dr. Nathan Andrew Neilson's medical license number?
Dr. Neilson holds Missouri license 2024014678.
Which hospitals is Dr. Nathan Andrew Neilson affiliated with?
Dr. Neilson practices at Barnes-Jewish Hospital in Saint Louis, Missouri. Dr. Neilson is also affiliated with Barnes-Jewish West County Hospital.
What medical group is Dr. Nathan Andrew Neilson part of?
Dr. Neilson is linked to WashU Medicine Psychiatry.
Does Dr. Nathan Andrew Neilson accept Medicare?
Yes. CMS data shows Dr. Neilson billed Medicare for 195 services in 2024, and Dr. Neilson accepts Medicare assignment.
How many Medicare patients does Dr. Nathan Andrew Neilson see?
CMS counts 64 Medicare patients who saw Dr. Neilson in 2024, with an average age of 69.
What services does Dr. Nathan Andrew Neilson bill to Medicare?
In 2024, Dr. Neilson's most billed Medicare services were hospital inpatient care (99233), medicare service (G0316) and hospital inpatient care (99223).
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Where did Dr. Nathan Andrew Neilson go to medical school?
Dr. Neilson graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2021.
What drugs does Dr. Nathan Andrew Neilson prescribe most?
In 2024 Medicare Part D data, Dr. Neilson's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Famotidine.
How long has Dr. Nathan Andrew Neilson been practicing?
Dr. Neilson graduated from medical school in 2021, 5 years ago.
Does Dr. Nathan Andrew Neilson do research?
Dmand AI links 3 publications to Dr. Neilson, published from 2016 to 2021.
Who does Dr. Nathan Andrew Neilson publish with?
Dr. Neilson's most frequent co-authors are Mansoor Ahmad, MD (2 shared papers), Sudhir Mungee, MD (2 shared papers) and Udit Rajeev Joshi, FACC, MD (1 shared paper).
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