J Gastrointest Oncol
Dr. Leonid I. Begun, MD
NPI1396208815PAC ID5193184075
- Medicare services, 2024
- 807
- Medicare patients, 2024
- 246
- Part D claims, 2024
- 1,007
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 140 Chestnut St, Ridgewood, NJ 07450
- Practice phone
- Call (201) 444-3550
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
West Bergen Mental Healthcare, Inc.
Ridgewood, New Jersey
Find Dr. Begun'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. Leonid I. Begun is a psychiatrist in Ridgewood, New Jersey
Dr. Begun practices at West Bergen Mental Healthcare, Inc. in Ridgewood, New Jersey.
Dr. Begun's NPI, 1396208815, was assigned on April 11, 2019. Dr. Begun graduated from Ross University School of Medicine in 2014. Dr. Begun holds New Jersey license 25MA11897200.
NPI and contact details
- NPI
- 1396208815NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193184075
- NPI enumeration date
- April 11, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (201) 444-3550
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Leonid I. Begun practices at West Bergen Mental Healthcare, Inc. in Ridgewood, New Jersey
Dr. Begun's primary practice is West Bergen Mental Healthcare, Inc., at 140 Chestnut St, Ridgewood, NJ 07450 in Bergen County. The practice phone is (201) 444-3550.
- West Bergen Mental Healthcare, Inc.140 Chestnut St, Ridgewood, NJ 07450 · Bergen CountyPhone(201) 444-3550
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Leonid I. Begun is affiliated with 4 sites of care and 2 medical groups
Dr. Begun's primary practice is West Bergen Mental Healthcare, Inc. in Ridgewood, New Jersey. Dr. Begun is also affiliated with Holy Name Medical Center. The medical group on file is West Bergen Mental Healthcare. Dmand AI also links Dr. Begun to 2 more group practices and clinics and 1 medical group, each named with a free account.
West Bergen Mental Healthcare, Inc.Primary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Leonid I. Begun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Begun practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| West Bergen Mental Healthcare, Inc. | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonid I. Begun is one of 1,216 psychiatrists in New Jersey
Psychiatry is Dr. Begun's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Begun is licensed in New Jersey.
Specialties and state licenses
- Psychiatry, New JerseyPrimary
Psychiatrists near Dr. Begun
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
1,216psychiatrists in New Jersey
9psychiatrists in Ridgewood
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Leonid I. Begun billed Medicare for 807 services in 2024
CMS data shows 807 Medicare services from Dr. Begun across 6 procedure codes in 2024, for 246 Medicare patients. Medicare paid $71,553 for them.
Medicare services, 2024807
Medicare patients246
Paid by Medicare$71,553
Procedure codes6
Dr. Begun's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2142024: 552158%
- Tests and treatments
- 2023: 372024: 208462%
- Other services
- 2023: 02024: 47
Where Dr. Begun's Medicare services took place, 2024
- In an office8410%
- In a facility72390%
Dr. Begun compared with the New Jersey median for psychiatrists, 2024
- Dr. Begun
- New Jersey median
- Medicare services
- 807vs 1844.4 times
- Medicare patients
- 246vs 574.3 times
- Part D claims
- 911vs 1755.2 times
Medians across 1,365 psychiatrists in New Jersey with Dmand AI profiles that report each measure.
Dr. Begun'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. Begun and other psychiatrists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Leonid I. Begun treated 246 Medicare patients in 2024, average age 72
CMS counts 246 Medicare patients who saw Dr. Begun in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have anxiety, and 75% have high blood pressure. 37% are also on Medicaid. Their average risk score is 1.99, 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. Begun's median patient age at 51, with 59% women.
Medicare patients, 2024246
Average age72
Average risk score1.99
Also on Medicaid37%
Dr. Begun's Medicare patients by age, 2024
Dr. Begun's Medicare patients by sex, 2024
- Women12952%
- Men11748%
Chronic conditions among Dr. Begun's Medicare patients, 2024
- Anxiety75%
- High blood pressure75%
- High cholesterol75%
- Mood disorders75%
- Depression68%
- Arthritis57%
- Diabetes50%
- Alzheimer's and dementia48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Begun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women59%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Leonid I. Begun wrote 1,007 Medicare Part D claims in 2024
In 2024, Dr. Begun wrote 1,007 Medicare Part D claims for 67 patients. 97% of them were for generic drugs. CMS names the drug for 911 of them, across 33 drugs with 11 or more claims each, at $68,862 in total drug cost. In 2023, CMS named 94 claims across 7 drugs.
Part D claims, 20241,007
Drugs named by CMS33
Total drug cost$68,862
Part D patients67
Dr. Begun's Part D claims by kind of drug, 2024
- Generic972 claims97%
- Brand-name35 claims3%
Dr. Begun'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. Begun's Part D claims, 2024
- Antipsychotics, patients 65 and over10%102 of 1,007 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: 942024: 911869%
Drugs named by CMS: 33 in 2024, 7 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
Dr. Leonid I. Begun offers telehealth to Medicare patients
Dr. Begun accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Begun as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Leonid I. Begun has 2 publications on record
Dmand AI links 2 papers to Dr. Begun in 2020. Dr. Begun's most frequent co-author is Orna Alpert, MD.
Papers2
Dr. Begun's most frequent co-authors
Recent publications by Dr. Begun
See who Dr. Begun researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Begun works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Leonid I. Begun received $1,494 in industry payments from 2023 to 2025
CMS Open Payments shows 60 general payments to Dr. Begun from 13 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 91% of the total. Bristol-Myers Squibb Company paid the most, $439.
General payments to Dr. Begun by program year, 2023 to 2025
General payments to Dr. Begun by kind, 2023 to 2025
$1.5Kin total
- Food and beverage$1,35691%
- Education$1399%
Companies that paid Dr. Begun 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. Leonid I. Begun graduated from Ross University School of Medicine
Dr. Begun graduated from Ross University School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Leonid I. Begun'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 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 |
| Industry payments | Open Payments (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 Dr. Leonid I. Begun
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. Leonid I. Begun's NPI number?
Dr. Leonid I. Begun's NPI number is 1396208815. It was assigned on April 11, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonid I. Begun?
Dr. Leonid I. Begun is a psychiatrist in Ridgewood, New Jersey. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Leonid I. Begun practice?
Dr. Begun practices at 140 Chestnut St, Ridgewood, NJ 07450. Dr. Begun's primary practice is West Bergen Mental Healthcare, Inc. in Ridgewood, New Jersey. Dmand AI also links Dr. Begun to 2 group practices and clinics and 1 medical group.
What is Dr. Leonid I. Begun's office phone number?
The practice phone on file for Dr. Begun is (201) 444-3550.
What is Dr. Leonid I. Begun's medical license number?
Dr. Begun holds New Jersey license 25MA11897200.
Which hospitals is Dr. Leonid I. Begun affiliated with?
Dr. Begun is affiliated with Holy Name Medical Center.
What medical group is Dr. Leonid I. Begun part of?
Dr. Begun is linked to West Bergen Mental Healthcare. Dmand AI links Dr. Begun to 1 more medical group.
Does Dr. Leonid I. Begun accept Medicare?
Yes. CMS data shows Dr. Begun billed Medicare for 807 services in 2024, and Dr. Begun accepts Medicare assignment.
Does Dr. Leonid I. Begun offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Begun as offering telehealth services.
How many Medicare patients does Dr. Leonid I. Begun see?
CMS counts 246 Medicare patients who saw Dr. Begun in 2024, with an average age of 72.
Show 7 more questionsShow fewer questions
What services does Dr. Leonid I. Begun bill to Medicare?
In 2024, Dr. Begun's most billed Medicare services were hospital inpatient care (99232), psychiatric service (90792) and office visit, established patient (99214).
Where did Dr. Leonid I. Begun go to medical school?
Dr. Begun graduated from Ross University School of Medicine in 2014.
What drugs does Dr. Leonid I. Begun prescribe most?
In 2024 Medicare Part D data, Dr. Begun's most prescribed drugs by claims were Quetiapine Fumarate, Bupropion XL and Fluoxetine HCl.
Has Dr. Leonid I. Begun received payments from drug or device companies?
CMS Open Payments shows $1,494 in general payments to Dr. Begun from 13 companies from 2023 to 2025. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Leonid I. Begun been practicing?
Dr. Begun graduated from medical school in 2014, 12 years ago.
Does Dr. Leonid I. Begun do research?
Dmand AI links 2 publications to Dr. Begun.
Who does Dr. Leonid I. Begun publish with?
Dr. Begun's most frequent co-authors are Orna Alpert, MD (2 shared papers).
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