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DR. LESLIE ESTHER KLYACHMAN MD
NPI 1700346376
Internal Medicine - Gastroenterology in East Patchogue, NY

Active since March 20, 2019PECOS EnrolledAccepts Medicare Assignment
285 SILLS ROAD, BUILDINGS 5-6, SUIT H, NYU LANGONE MEDICAL ASSOCIATES, EAST PATCHOGUE, NY 11772(516) 589-4494 Get Directions Write a Review

NPPES record last updated: June 24, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 24, 2025, Mar 20, 2019 (2 updates tracked since 2019).

About Dr. Leslie Esther Klyachman Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LESLIE ESTHER KLYACHMAN MD (NPI 1700346376) is an individual gastroenterology provider in East Patchogue, New York, licensed in New York (326020-01) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Long Island Community Hospital, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1700346376
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameDR. LESLIE ESTHER KLYACHMANCredential: MD
Location Address285 SILLS ROAD, BUILDINGS 5-6, SUIT H, NYU LANGONE MEDICAL ASSOCIATESEast Patchogue, NY 11772
Mailing Address4023 Greentree DrOceanside, NY 11572-5948 · (516) 589-4494
Phone(516) 589-4494
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMarch 20, 2019
Last NPPES UpdateJune 24, 20252 updates tracked since enumeration
NPPES CertifiedJune 24, 2025
✔ NPI 1700346376 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 326020-01
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
285 SILLS ROAD, BUILDINGS 5-6, SUIT H, East Patchogue, NY 11772
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Leslie Esther Klyachman Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID840527206
PECOS Enrollment IDI20260205001765
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Long Island Community Hospital

Acute Care Hospitals · Patchogue, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330141
Location101 Hospital RoadPatchogue, NY 11772 · Suffolk County
Emergency services

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330214
Location550 First AvenueNew York, NY 10016 · New York County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11772 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leslie Klyachman's NPI number?

The NPI number for Leslie Klyachman is 1700346376. It was assigned to this individual provider in the NPPES registry on March 20, 2019.

Where is Leslie Klyachman located?

Leslie Klyachman practices at 285 Sills Road, Buildings 5-6, Suit H Nyu Langone Medical Associates, East Patchogue, NY 11772. The listed phone number is (516) 589-4494.

What is Leslie Klyachman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Leslie Klyachman enrolled in Medicare?

Yes. Leslie Klyachman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Leslie Klyachman affiliated with any hospitals?

According to CMS data, Leslie Klyachman is affiliated with Long Island Community Hospital and Nyu Langone Hospitals.

When was this NPI record last updated?

The NPPES record for Leslie Klyachman was last updated on June 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.