Dr. Kasim Kazbay, MD

  • Oceanside, NY
  • Gastroenterologist
NPI1265747489PAC ID0749279206
Medicare services, 2024
1,209
Medicare patients, 2024
542
Part D claims, 2021
26
Hospital affiliations
4
Industry payments
$998
Practice address
One Healthy Way, Oceanside, NY 11572
Practice phone
Call (516) 632-3000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Mount Sinai South Nassau

Hospital · Oceanside, New York

See all 8 affiliations

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Dr. Kasim Kazbay is a gastroenterologist in Oceanside, New York

Dr. Kazbay practices at Mount Sinai South Nassau in Oceanside, New York, part of Mount Sinai Health System.

Dr. Kazbay's NPI, 1265747489, was assigned on August 12, 2010. Dr. Kazbay holds New York license 269455.

NPI and contact details
Medicare PAC ID
0749279206
NPI enumeration date
August 12, 2010
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(516) 632-3000
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
66
Medical school graduation
1986

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Kasim Kazbay practices at 2 locations in Oceanside, New York

Dr. Kazbay's primary practice is Mount Sinai South Nassau, at One Healthy Way, Oceanside, NY 11572 in Nassau County. The practice phone is (516) 632-3000. Dr. Kazbay also practices at South Nassau Communities Hospital, 1 Healthy Way, Oceanside, NY 11572.

  • Mount Sinai South NassauPrimary
    One Healthy Way, Oceanside, NY 11572 · Nassau CountyPhone(516) 632-3000
  • South Nassau Communities Hospital
    1 Healthy Way, Oceanside, NY 11572 · Nassau CountyPhone(516) 632-3000

Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data

Dr. Kasim Kazbay is affiliated with 4 sites of care and 4 medical groups

Dr. Kazbay's primary practice is Mount Sinai South Nassau in Oceanside, New York, part of Mount Sinai Health System. Dr. Kazbay is also affiliated with The Mount Sinai Hospital. The medical group on file is Mount Sinai Institute for Liver Medicine. Dmand AI also links Dr. Kazbay to 2 more hospitals and 3 medical groups, each named with a free account.

See all 8 affiliations for Dr. Kazbay

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Kasim Kazbay's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kazbay practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mount Sinai South NassauAvailable with a free account
+3 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Kasim Kazbay is one of 1,583 gastroenterologists in New York

Gastroenterology is Dr. Kazbay's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Kazbay's licenses on file in 2 states: New York and West Virginia.

Specialties and state licenses

  • Gastroenterology, New YorkPrimaryLicense 269455 · taxonomy 207RG0100X
  • West Virginia licenseLicense 21431

Gastroenterologists near Dr. Kazbay

Counts of gastroenterologists 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

Dr. Kasim Kazbay billed Medicare for 1,209 services in 2024

CMS data shows 1,209 Medicare services from Dr. Kazbay across 12 procedure codes in 2024, for 542 Medicare patients. Medicare paid $103,976 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,209
Medicare patients542
Paid by Medicare$103,976
Procedure codes12

Dr. Kazbay's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 5172024: 1,049103%
Surgery
2023: 402024: 160300%

Dr. Kazbay compared with the New York median for gastroenterologists, 2024

  • Dr. Kazbay
  • New York median
Medicare services
1,209vs 4212.9 times
Medicare patients
542vs 2362.3 times
Part D claims
26vs 38293% below

Medians across 1,551 gastroenterologists in New York with Dmand AI profiles that report each measure.

Dr. Kazbay'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Kasim Kazbay treated 542 Medicare patients in 2024, average age 79

CMS counts 542 Medicare patients who saw Dr. Kazbay in 2024. The largest group is 75 to 84, with 203 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 2.63, 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. Kazbay's median patient age at 66, with 47% women.

Medicare patients, 2024542
Average age79
Average risk score2.63
Also on Medicaid32%

Dr. Kazbay's Medicare patients by age, 2024

Dr. Kazbay's Medicare patients by sex, 2024

  • Women27350%
  • Men26950%

Chronic conditions among Dr. Kazbay's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Ischemic heart disease59%
  4. Diabetes56%
  5. Arthritis53%
  6. Chronic kidney disease48%
  7. Heart failure46%
  8. Mood disorders40%

Share of Medicare patients with each condition. A patient can have several.

Dr. Kazbay's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 66

Patient panel by sex, all payers

  • Women47%
  • Men50%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Kasim Kazbay wrote 26 Medicare Part D claims in 2021

In 2021, Dr. Kazbay wrote 26 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $266 in total drug cost. In 2020, CMS named 174 claims across 5 drugs.

Part D claims, 202126
Drugs named by CMS1
Total drug cost$266

Dr. Kazbay's most prescribed drugs by claims, 2021

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2020 to 2021

  • 2020
  • 2021
Claims for drugs CMS names
2020: 1742021: 2685%

Drugs named by CMS: 1 in 2021, 5 in 2020.

See all prescribing by Dr. Kazbay

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

Dr. Kasim Kazbay ranks in the 83rd percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare

Dr. Kazbay accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 138 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Kazbay, more than 83% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Dr. Kazbay ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
83rd percentile138 procedures
Colonoscopy
72nd percentile74 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Kasim Kazbay received $998 in industry payments from 2016 to 2025

CMS Open Payments shows 54 general payments to Dr. Kazbay from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $142.

General payments to Dr. Kazbay by program year, 2016 to 2025

Companies that paid Dr. Kazbay the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Kazbay

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Kasim Kazbay's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Kasim Kazbay

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. Kasim Kazbay's NPI number?

Dr. Kasim Kazbay's NPI number is 1265747489. It was assigned on August 12, 2010, and it is active in the NPI Registry.

What kind of doctor is Dr. Kasim Kazbay?

Dr. Kasim Kazbay is a gastroenterologist in Oceanside, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Kasim Kazbay practice?

Dr. Kazbay practices at One Healthy Way, Oceanside, NY 11572. Dr. Kazbay also practices at 1 Healthy Way, Oceanside, NY 11572. Dr. Kazbay's primary practice is Mount Sinai South Nassau in Oceanside, New York, part of Mount Sinai Health System. Dmand AI also links Dr. Kazbay to 2 hospitals and 3 medical groups.

What is Dr. Kasim Kazbay's office phone number?

The practice phone on file for Dr. Kazbay is (516) 632-3000.

What is Dr. Kasim Kazbay's medical license number?

Dr. Kazbay holds New York license 269455, one of the licenses on file in 2 states.

Which states has Dr. Kasim Kazbay been licensed in?

Dmand AI has state licenses on file for Dr. Kazbay in New York and West Virginia.

Which hospitals is Dr. Kasim Kazbay affiliated with?

Dr. Kazbay practices at Mount Sinai South Nassau in Oceanside, New York. Dr. Kazbay is also affiliated with The Mount Sinai Hospital. Dmand AI links Dr. Kazbay to 2 more hospitals.

What medical group is Dr. Kasim Kazbay part of?

Dr. Kazbay is linked to Mount Sinai Institute for Liver Medicine. Dmand AI links Dr. Kazbay to 3 more medical groups.

Does Dr. Kasim Kazbay accept Medicare?

Yes. CMS data shows Dr. Kazbay billed Medicare for 1,209 services in 2024, and Dr. Kazbay accepts Medicare assignment.

How many Medicare patients does Dr. Kasim Kazbay see?

CMS counts 542 Medicare patients who saw Dr. Kazbay in 2024, with an average age of 79.

Show 4 more questionsShow fewer questions

What services does Dr. Kasim Kazbay bill to Medicare?

In 2024, Dr. Kazbay's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and surgery: digestive system (43235).

What drugs does Dr. Kasim Kazbay prescribe most?

In 2021 Medicare Part D data, Dr. Kazbay's most prescribed drugs by claims were Omeprazole.

Has Dr. Kasim Kazbay received payments from drug or device companies?

CMS Open Payments shows $998 in general payments to Dr. Kazbay from 15 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.

How long has Dr. Kasim Kazbay been practicing?

Dr. Kazbay graduated from medical school in 1986, 40 years ago.

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