David Leonard, DC
- Medicare patients, 2026
- 64
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2017
- Practice address
- 249 Clarkson Rd, Ballwin, MO 63011
- Practice phone
- Call (636) 256-0707
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John C Smith Jr Inc
Ballwin, Missouri
Find David Leonard'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.
David Leonard is a chiropractor in Ballwin, Missouri
David Leonard practices at John C Smith Jr Inc in Ballwin, Missouri.
David Leonard's NPI, 1598283897, was assigned on September 7, 2017. David Leonard graduated from Logan College of Chiropractic in 2017. David Leonard holds Missouri license 2017031986.
- NPI
- 1598283897NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022382175
- NPI enumeration date
- September 7, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (636) 256-0707
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
David Leonard practices at John C Smith Jr Inc in Ballwin, Missouri
David Leonard's primary practice is John C Smith Jr Inc, at 249 Clarkson Rd, Ballwin, MO 63011 in Saint Louis County. The practice phone is (636) 256-0707.
- John C Smith Jr Inc249 Clarkson Rd, Ballwin, MO 63011 · Saint Louis CountyPhone(636) 256-0707
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
David Leonard is affiliated with 2 sites of care and 1 medical group
David Leonard's primary practice is John C Smith Jr Inc in Ballwin, Missouri. Dmand AI also links David Leonard to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at David Leonard's practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Leonard practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John C Smith Jr Inc | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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David Leonard is one of 1,339 chiropractors in Missouri
Chiropractor is David Leonard's primary specialty in the NPI Registry, under taxonomy code 111N00000X. David Leonard is licensed in Missouri.
Specialties and state licenses
- Chiropractor, MissouriPrimary
Chiropractors near David Leonard
Counts of chiropractors 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
David Leonard treated 64 Medicare patients in 2026, average age 74
CMS counts 64 Medicare patients who saw David Leonard in 2026. The largest group is 65 to 74, with 37 patients. 75% of them have arthritis, and 75% have high cholesterol. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Leonard's median patient age at 58, with 51% women.
David Leonard's Medicare patients by age, 2026
CMS leaves out age groups with fewer than 11 patients.
David Leonard's Medicare patients by sex, 2026
- Women3758%
- Men2742%
Chronic conditions among David Leonard's Medicare patients, 2026
- Arthritis75%
- High cholesterol75%
- High blood pressure69%
- Mood disorders36%
- Depression30%
- Ischemic heart disease27%
- Anxiety25%
- COPD17%
Share of Medicare patients with each condition. A patient can have several.
David Leonard's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
How David Leonard takes part in Medicare
David Leonard 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)
David Leonard graduated from Logan College of Chiropractic
David Leonard graduated from Logan College of Chiropractic in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for David Leonard'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 Data |
| 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) |
| 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 David Leonard
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David Leonard's NPI number?
David Leonard's NPI number is 1598283897. It was assigned on September 7, 2017, and it is active in the NPI Registry.
What does David Leonard specialize in?
David Leonard is a chiropractor in Ballwin, Missouri. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does David Leonard practice?
David Leonard practices at 249 Clarkson Rd, Ballwin, MO 63011. David Leonard's primary practice is John C Smith Jr Inc in Ballwin, Missouri. Dmand AI also links David Leonard to 1 group practice or clinic and 1 medical group, and a free account names each one.
What is David Leonard's office phone number?
The practice phone on file for David Leonard is (636) 256-0707. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is David Leonard's email address?
Dmand AI checks professional and personal email addresses for David Leonard through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is David Leonard's medical license number?
David Leonard holds Missouri license 2017031986.
What medical group is David Leonard part of?
Dmand AI links David Leonard to 1 medical group. A free account names the group, with the clinicians and leaders there.
Who does David Leonard practice with?
Dmand AI links 5 HCPs to David Leonard's primary medical group. A free account lists them, with verified contacts.
Does David Leonard accept Medicare?
Yes. CMS lists David Leonard as accepting Medicare assignment.
How many Medicare patients does David Leonard see?
CMS counts 64 Medicare patients who saw David Leonard in 2026, with an average age of 74.
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Where did David Leonard go to medical school?
David Leonard graduated from Logan College of Chiropractic in 2017.
How long has David Leonard been practicing?
David Leonard graduated from medical school in 2017, 9 years ago.
What EHR does David Leonard's practice use?
Dmand AI tracks the EHR system at John C Smith Jr Inc and at 1 more site and 1 medical group. The vendor and product are available with a free Dmand AI account.
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