Dr. David A. Oneill, DO
- Medicare services, 2024
- 203
- Medicare patients, 2024
- 207
- Part D claims, 2024
- 18,922
- Hospital affiliations
- 8
- Industry payments
- $9,504
- Practice address
- 3015 N Ballas Rd, Saint Louis, MO 63131
- Practice phone
- Call (314) 996-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oneill's professional email, personal email and mobile number
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Dr. David A. Oneill is a family medicine physician in Saint Louis, Missouri
Dr. Oneill practices at Missouri Baptist Medical Center in Saint Louis, Missouri, part of BJC Health.
Dr. Oneill's NPI, 1922092394, was assigned on August 31, 2005. Dr. Oneill holds Illinois license 036095479.
- NPI
- 1922092394NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284723271
- NPI enumeration date
- August 31, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 996-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David A. Oneill practices at Missouri Baptist Medical Center in Saint Louis, Missouri
Dr. Oneill's primary practice is Missouri Baptist Medical Center, at 3015 N Ballas Rd, Saint Louis, MO 63131 in St. Louis County. The practice phone is (314) 996-5000.
- Missouri Baptist Medical Center3015 N Ballas Rd, Saint Louis, MO 63131 · St. Louis CountyPhone(314) 996-5000
Source: Dmand AI Affiliation Data
Dr. David A. Oneill is affiliated with 14 sites of care and 2 medical groups
Dr. Oneill's primary practice is Missouri Baptist Medical Center in Saint Louis, Missouri, part of BJC Health. Dr. Oneill is also affiliated with Barnes-Jewish Hospital. The medical group on file is SIHF Healthcare. Dmand AI also links Dr. Oneill to 6 more hospitals, 5 home health agencies, 1 hospice and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David A. Oneill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oneill practices, 14 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Missouri Baptist Medical Center | Available with a free account |
| +13 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David A. Oneill is one of 2,412 family medicine physicians in Missouri
Family medicine is Dr. Oneill's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Oneill is licensed in Illinois.
Specialties and state licenses
- Family medicine, IllinoisPrimary
Family medicine physicians near Dr. Oneill
Counts of family 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. David A. Oneill billed Medicare for 203 services in 2024
CMS data shows 203 Medicare services from Dr. Oneill across 2 procedure codes in 2024, for 207 Medicare patients. Medicare paid $18,363 for them. Every service was in an office.
Dr. Oneill's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2312024: 19284%
- Lab and pathology
- 2023: 312024: 1165%
- Drugs given in the office
- 2023: 1282024: 0100%
- Tests and treatments
- 2023: 2832024: 0100%
- Other services
- 2023: 6142024: 0100%
Dr. Oneill compared with the Missouri median for family medicine physicians, 2024
- Dr. Oneill
- Missouri median
- Medicare services
- 203vs 33339% below
- Medicare patients
- 207vs 15633% above
- Part D claims
- 17,968vs 1,23114.6 times
Medians across 2,555 family medicine physicians in Missouri with Dmand AI profiles that report each measure.
Dr. Oneill'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oneill and other family medicine physicians in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David A. Oneill treated 207 Medicare patients in 2024, average age 75
CMS counts 207 Medicare patients who saw Dr. Oneill in 2024. The largest group is 65 to 74, with 93 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.37, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oneill's median patient age at 68, with 50% women.
Dr. Oneill's Medicare patients by age, 2024
Dr. Oneill's Medicare patients by sex, 2024
- Women10450%
- Men10350%
Chronic conditions among Dr. Oneill's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Ischemic heart disease43%
- Diabetes38%
- Depression32%
- Mood disorders32%
- Anxiety31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oneill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David A. Oneill wrote 18,922 Medicare Part D claims in 2024
In 2024, Dr. Oneill wrote 18,922 Medicare Part D claims for 1,274 patients. 88% of them were for generic drugs. CMS names the drug for 17,968 of them, across 189 drugs with 11 or more claims each, at $1,139,755 in total drug cost. In 2023, CMS named 19,236 claims across 191 drugs.
Dr. Oneill's Part D claims by kind of drug, 2024
- Generic16,660 claims88%
- Brand-name2,084 claims11%
- Other178 claims1%
Dr. Oneill'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. Oneill's Part D claims, 2024
- Opioids3%553 of 18,922 claims
- Antibiotics3%544 of 18,922 claims
- Antipsychotics, patients 65 and over0%30 of 18,922 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: 19,2362024: 17,9687%
Drugs named by CMS: 189 in 2024, 191 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. David A. Oneill takes part in Medicare
Dr. Oneill 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. David A. Oneill received $9,504 in industry payments from 2016 to 2025
CMS Open Payments shows 719 general payments to Dr. Oneill from 51 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $1,415.
General payments to Dr. Oneill by program year, 2016 to 2025
General payments to Dr. Oneill by kind, 2016 to 2025
- Food and beverage$9,484100%
- Education$210%
Companies that paid Dr. Oneill the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David A. Oneill'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) |
| 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. David A. Oneill
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. David A. Oneill's NPI number?
Dr. David A. Oneill's NPI number is 1922092394. It was assigned on August 31, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. David A. Oneill?
Dr. David A. Oneill is a family medicine physician in Saint Louis, Missouri. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. David A. Oneill practice?
Dr. Oneill practices at 3015 N Ballas Rd, Saint Louis, MO 63131. Dr. Oneill's primary practice is Missouri Baptist Medical Center in Saint Louis, Missouri, part of BJC Health. Dmand AI also links Dr. Oneill to 6 hospitals, 5 home health agencies, 1 hospice and 1 medical group.
What is Dr. David A. Oneill's office phone number?
The practice phone on file for Dr. Oneill is (314) 996-5000.
What is Dr. David A. Oneill's medical license number?
Dr. Oneill holds Illinois license 036095479.
Which hospitals is Dr. David A. Oneill affiliated with?
Dr. Oneill practices at Missouri Baptist Medical Center in Saint Louis, Missouri. Dr. Oneill is also affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Oneill to 6 more hospitals.
What medical group is Dr. David A. Oneill part of?
Dr. Oneill is linked to SIHF Healthcare. Dmand AI links Dr. Oneill to 1 more medical group.
Does Dr. David A. Oneill accept Medicare?
Yes. CMS data shows Dr. Oneill billed Medicare for 203 services in 2024, and Dr. Oneill accepts Medicare assignment.
How many Medicare patients does Dr. David A. Oneill see?
CMS counts 207 Medicare patients who saw Dr. Oneill in 2024, with an average age of 75.
What services does Dr. David A. Oneill bill to Medicare?
In 2024, Dr. Oneill's most billed Medicare services were office visit, established patient (99214) and lab and pathology test (83036).
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What drugs does Dr. David A. Oneill prescribe most?
In 2024 Medicare Part D data, Dr. Oneill's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. David A. Oneill received payments from drug or device companies?
CMS Open Payments shows $9,504 in general payments to Dr. Oneill from 51 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. David A. Oneill been practicing?
Dr. Oneill graduated from medical school in 1994, 32 years ago.
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