AustraliaColitis, UlcerativeCrohn Disease
Dr. Leonard A. Haas, MD
NPI1073019584
- Publications
- 5
- Industry payments
- $2,522
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 13
- Practice address
- 110 S Bedford Rd, Mount Kisco, NY 10549
- Practice phone
- Call (914) 241-1050
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Caremount Medical
Mount Kisco, New York
Find Dr. Haas' 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. Leonard A. Haas is a pediatric gastroenterology physician in Mount Kisco, New York
Dr. Haas practices at Caremount Medical in Mount Kisco, New York.
Dr. Haas' NPI, 1073019584, was assigned on April 3, 2018. Dr. Haas graduated from Mayo Clinic Alix School of Medicine - Rochester in 2018. Dr. Haas' Maryland license number on file is D91137.
NPI and contact details
- NPI
- 1073019584NPI Registry (opens in a new tab)
- NPI enumeration date
- April 3, 2018
- NPI status
- Active
- Practice phone
- (914) 241-1050
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Leonard A. Haas practices at Caremount Medical in Mount Kisco, New York
Dr. Haas' primary practice is Caremount Medical, at 110 S Bedford Rd, Mount Kisco, NY 10549 in Westchester County. The practice phone is (914) 241-1050.
- Caremount Medical110 S Bedford Rd, Mount Kisco, NY 10549 · Westchester CountyPhone(914) 241-1050
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Leonard A. Haas is affiliated with 2 sites of care and 1 medical group
Dr. Haas' primary practice is Caremount Medical in Mount Kisco, New York. The medical group on file is CareMount Medical. Dmand AI also links Dr. Haas to 1 more group practice or clinic, 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 Dr. Leonard A. Haas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Haas practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Caremount Medical | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonard A. Haas is one of 158 pediatric gastroenterology physicians in New York
Pediatric gastroenterology is Dr. Haas' primary specialty in the NPI Registry, under taxonomy code 2080P0206X. Dr. Haas is board certified in pediatrics by the American Board of Pediatrics. Dmand AI has Dr. Haas' licenses on file in 2 states: Maryland and New York.
Specialties and state licenses
- Pediatric gastroenterology, MarylandPrimary
- New York license
Pediatric gastroenterology physicians near Dr. Haas
Counts of pediatric gastroenterology physicians with a Dmand AI profile, by place and practice. Each opens the list.
158pediatric gastroenterology physicians in New York
5pediatric gastroenterology physicians in Mount Kisco
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Leonard A. Haas' patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Haas' median patient age at 10, with 48% women.
Dr. Haas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women48%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. Leonard A. Haas has 5 publications on record
Dmand AI links 5 papers to Dr. Haas, published from 2011 to 2024. The most frequent topics are Caenorhabditis elegans, Inflammatory Bowel Diseases and Sexual Behavior, Animal. Dr. Haas' most frequent co-authors are Jonathan Hodgkin, MD, Kristen B. Thomas, MD and Jeanne Tung, MD.
Papers5
Years published2011 to 2024
Dr. Haas' papers by year, 2011 to 2024
Topics Dr. Haas writes about most
- Caenorhabditis elegans
- Inflammatory Bowel Diseases
- Sexual Behavior, Animal
Dr. Haas' most frequent co-authors
Recent publications by Dr. Haas
Caenorhabditis elegansExtracellular VesiclesGene Expression Profiling
Caenorhabditis elegansSexual Behavior, AnimalSpermatozoa
Abdom Radiol (NY)
Administration, OralBarium SulfateContrast Media
See who Dr. Haas researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Haas works with, so you can find a warm path to the right pediatric gastroenterology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Leonard A. Haas received $2,522 in industry payments from 2023 to 2025
CMS Open Payments shows 77 general payments to Dr. Haas from 16 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $968.
General payments to Dr. Haas by program year, 2023 to 2025
Companies that paid Dr. Haas the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leonard A. Haas graduated from Mayo Clinic Alix School of Medicine - Rochester
Dr. Haas graduated from Mayo Clinic Alix School of Medicine - Rochester in 2018.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Leonard A. Haas accepts plans from 13 insurance carriers
Dr. Haas is in network with 13 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- Aetna
- Aspirus Health Plan
- Blue Cross Blue Shield of Michigan
- HCSC
- MVP Health Care
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Haas accepts, by number of carriers
- PPO8
- HMO7
- EPO4
- POS2
- Medicaid1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Leonard A. Haas'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 Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Leonard A. Haas
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. Leonard A. Haas' NPI number?
Dr. Leonard A. Haas' NPI number is 1073019584. It was assigned on April 3, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonard A. Haas?
Dr. Leonard A. Haas is a pediatric gastroenterology physician in Mount Kisco, New York. The primary specialty in the NPI Registry is Pediatric Gastroenterology Physician (taxonomy code 2080P0206X).
Where does Dr. Leonard A. Haas practice?
Dr. Haas practices at 110 S Bedford Rd, Mount Kisco, NY 10549. Dr. Haas' primary practice is Caremount Medical in Mount Kisco, New York. Dmand AI also links Dr. Haas to 1 group practice or clinic.
What is Dr. Leonard A. Haas' office phone number?
The practice phone on file for Dr. Haas is (914) 241-1050.
What is Dr. Leonard A. Haas' medical license number?
Dr. Haas' Maryland license number on file is D91137, one of the licenses on file in 2 states.
Which states has Dr. Leonard A. Haas been licensed in?
Dmand AI has state licenses on file for Dr. Haas in Maryland (2021 to 2024) and New York (2024 to 2026).
What medical group is Dr. Leonard A. Haas part of?
Dr. Haas is linked to CareMount Medical.
Is Dr. Leonard A. Haas board certified?
Yes. Dr. Haas is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. Leonard A. Haas go to medical school?
Dr. Haas graduated from Mayo Clinic Alix School of Medicine - Rochester in 2018.
Has Dr. Leonard A. Haas received payments from drug or device companies?
CMS Open Payments shows $2,522 in general payments to Dr. Haas from 16 companies from 2023 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
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How long has Dr. Leonard A. Haas been practicing?
Dr. Haas graduated from medical school in 2018, 8 years ago.
Does Dr. Leonard A. Haas do research?
Dmand AI links 5 publications to Dr. Haas, published from 2011 to 2024.
Who does Dr. Leonard A. Haas publish with?
Dr. Haas' most frequent co-authors are Jonathan Hodgkin, MD (1 shared paper), Kristen B. Thomas, MD (1 shared paper) and Jeanne Tung, MD (1 shared paper).
What insurance does Dr. Leonard A. Haas accept?
Dr. Haas is in network with 13 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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