Leonard H. Vankalmthout, DC
- Medicare patients, 2024
- 32
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 75 North Country Road, Port Jefferson, NY 11777
- Practice phone
- Call (631) 473-1320
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Leonard Vankalmthout'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.
Leonard H. Vankalmthout is a chiropractor in Port Jefferson, New York
Leonard Vankalmthout practices at Mather Hospital in Port Jefferson, New York, part of Northwell Health.
Leonard Vankalmthout's NPI, 1740365543, was assigned on October 27, 2006. Leonard Vankalmthout holds New York license X007087.
- NPI
- 1740365543NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476710559
- NPI enumeration date
- October 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (631) 473-1320
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Leonard H. Vankalmthout practices at Mather Hospital in Port Jefferson, New York
Leonard Vankalmthout's primary practice is Mather Hospital, at 75 North Country Road, Port Jefferson, NY 11777 in Suffolk County. The practice phone is (631) 473-1320.
- Mather Hospital75 North Country Road, Port Jefferson, NY 11777 · Suffolk CountyPhone(631) 473-1320
Source: Dmand AI Affiliation Data
Leonard H. Vankalmthout is affiliated with 2 sites of care
Leonard Vankalmthout's primary practice is Mather Hospital in Port Jefferson, New York, part of Northwell Health. Dmand AI also links Leonard Vankalmthout to 1 skilled nursing facility, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Leonard H. Vankalmthout's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Leonard Vankalmthout practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mather 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
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwell Health and 6.2K+ hospitals, with verified contacts in the same login.
Leonard H. Vankalmthout is one of 1,938 chiropractors in New York
Chiropractor is Leonard Vankalmthout's primary specialty in the NPI Registry, under taxonomy code 111N00000X. Leonard Vankalmthout is licensed in New York.
Specialties and state licenses
- Chiropractor, New YorkPrimary
Chiropractors near Leonard Vankalmthout
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
Leonard H. Vankalmthout treated 32 Medicare patients in 2024, average age 74
CMS counts 32 Medicare patients who saw Leonard Vankalmthout in 2024. The largest group is 75 to 84, with 16 patients. 75% of them have high cholesterol, and 72% have high blood pressure. Their average risk score is 0.66, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Leonard Vankalmthout's median patient age at 42, with 58% women.
Leonard Vankalmthout's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Leonard Vankalmthout's Medicare patients by sex, 2024
- Women1238%
- Men2063%
Chronic conditions among Leonard Vankalmthout's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis53%
- Ischemic heart disease38%
Share of Medicare patients with each condition. A patient can have several.
Leonard Vankalmthout's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 42
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Leonard H. Vankalmthout takes part in Medicare
Leonard Vankalmthout 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)
Sources for Leonard H. Vankalmthout'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 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) |
| 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 Leonard H. Vankalmthout
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Leonard H. Vankalmthout's NPI number?
Leonard H. Vankalmthout's NPI number is 1740365543. It was assigned on October 27, 2006, and it is active in the NPI Registry.
What does Leonard H. Vankalmthout specialize in?
Leonard H. Vankalmthout is a chiropractor in Port Jefferson, New York. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does Leonard H. Vankalmthout practice?
Leonard Vankalmthout practices at 75 North Country Road, Port Jefferson, NY 11777. Leonard Vankalmthout's primary practice is Mather Hospital in Port Jefferson, New York, part of Northwell Health. Dmand AI also links Leonard Vankalmthout to 1 skilled nursing facility.
What is Leonard H. Vankalmthout's office phone number?
The practice phone on file for Leonard Vankalmthout is (631) 473-1320.
What is Leonard H. Vankalmthout's medical license number?
Leonard Vankalmthout holds New York license X007087.
Which hospitals is Leonard H. Vankalmthout affiliated with?
Leonard Vankalmthout practices at Mather Hospital in Port Jefferson, New York.
Does Leonard H. Vankalmthout accept Medicare?
Yes. CMS lists Leonard Vankalmthout as accepting Medicare assignment.
How many Medicare patients does Leonard H. Vankalmthout see?
CMS counts 32 Medicare patients who saw Leonard Vankalmthout in 2024, with an average age of 74.
How long has Leonard H. Vankalmthout been practicing?
Leonard Vankalmthout graduated from medical school in 1991, 35 years ago.
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