Dr. Hillel Sander Hammerman, MD

  • New York, NY
  • Gastroenterologist
NPI1619911021
Medicare services, 2021
165
Part D claims, 2024
14
Publications
1
Industry payments
$108
Medical group
1
Practice address
210 E 73rd St, New York, NY 10021-4395
Practice phone
Call (212) 288-1030
Professional email
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Personal email
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Mobile number
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Social profiles

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Dr. Hillel Sander Hammerman is a gastroenterologist in New York, New York

Dr. Hammerman practices with Northwell Health Physician Partners Cardiology at Great Neck, a medical group.

Dr. Hammerman's NPI, 1619911021, was assigned on June 15, 2006. Dr. Hammerman holds New York license 153188.

NPI and contact details
NPI enumeration date
June 15, 2006
NPI status
Active
Practice phone
(212) 288-1030
Professional email
Get email
Personal email
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Mobile number
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Sex
Male

Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Dr. Hillel Sander Hammerman's practice address is in New York, New York

Dr. Hammerman's practice address in the NPI Registry is 210 E 73rd St, New York, NY 10021-4395. The practice phone is (212) 288-1030.

  • NPI Registry address
    210 E 73rd St, New York, NY 10021-4395Phone(212) 288-1030

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

Dr. Hillel Sander Hammerman is affiliated with 1 medical group

Dr. Hammerman is part of Northwell Health Physician Partners Cardiology at Great Neck, a medical group in Westbury, New York.

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Hillel Sander Hammerman's practice

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

EHR by site
SiteEHR vendor and product
Northwell Health Physician Partners Cardiology at Great NeckAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwell Health Physician Partners Cardiology at Great Neck and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Hillel Sander Hammerman is one of 1,583 gastroenterologists in New York

Gastroenterology is Dr. Hammerman's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Hammerman is licensed in New York.

Specialties and state licenses

  • Gastroenterology, New YorkPrimaryLicense 153188 · taxonomy 207RG0100X

Gastroenterologists near Dr. Hammerman

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. Hillel Sander Hammerman billed Medicare for 165 services in 2021

CMS data shows 165 Medicare services from Dr. Hammerman across 5 procedure codes in 2021. Medicare paid $11,875 for them. Every service was in an office.

Medicare services, 2021165
Paid by Medicare$11,875
Procedure codes5

Dr. Hammerman's Medicare services by type, 2020 to 2021

  • 2020
  • 2021
Office and hospital visits
2020: 1242021: 8730%
Surgery
2020: 842021: 5930%
Other services
2020: 532021: 1964%
Tests and treatments
2020: 262021: 0100%

Dr. Hammerman compared with the New York median for gastroenterologists, 2021

  • Dr. Hammerman
  • New York median
Medicare services
165vs 42161% below
Part D claims
246vs 38236% below

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

Dr. Hammerman's most billed Medicare procedure codes, 2021

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Hammerman

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

Dr. Hillel Sander Hammerman's patients have a median age of 72

Across all payers, Dmand AI patient panel data puts Dr. Hammerman's median patient age at 72, with 72% women.

Dr. Hammerman's patients across all payers

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

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women72%
  • Men28%

Source: Dmand AI Patient Panel Data

Dr. Hillel Sander Hammerman wrote 14 Medicare Part D claims in 2024

In 2024, Dr. Hammerman wrote 14 Medicare Part D claims. 79% of them were for generic drugs. They cover 11 drugs, with $3,124 in total drug cost. In 2021, CMS named 1,031 claims across 31 drugs.

Part D claims, 202414
Drugs named by CMS11
Total drug cost$3,124

Dr. Hammerman's Part D claims by kind of drug, 2024

  • Generic11 claims79%
  • Brand-name and other3 claims21%

Dr. Hammerman's most prescribed drugs by claims, 2022

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, 2021 to 2022

  • 2021
  • 2022
Claims for drugs CMS names
2021: 1,0312022: 24676%

Drugs named by CMS: 11 in 2022, 31 in 2021.

See all prescribing by Dr. Hammerman

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

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Dr. Hillel Sander Hammerman has 1 publication on record

Dmand AI links 1 paper to Dr. Hammerman. Dr. Hammerman's most frequent co-authors are Howard Warren Bruckner, MD, Seth Cohen and Andrew Michael Fader, MD.

Papers1

Dr. Hammerman's most frequent co-authors

Recent publications by Dr. Hammerman

See all 1 publications and co-authors

See who Dr. Hammerman researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hammerman works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Hillel Sander Hammerman received $108 in industry payments from 2016 to 2017

CMS Open Payments shows 11 general payments to Dr. Hammerman from 6 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 95% of the total. Shire North American Group Inc paid the most, $41.

General payments to Dr. Hammerman by program year, 2016 to 2017

General payments to Dr. Hammerman by kind, 2016 to 2017

$108in total
  • Food and beverage$10395%
  • Education$55%

Companies that paid Dr. Hammerman the most, 2016 to 2017

Share is of all general payments to this clinician.

See all payments to Dr. Hammerman

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

Sources for Dr. Hillel Sander Hammerman'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 Practice Data
Primary practice, affiliations and health systemDmand AI Affiliation 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 Data
Part D prescribingMedicare 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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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. Hillel Sander Hammerman

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. Hillel Sander Hammerman's NPI number?

Dr. Hillel Sander Hammerman's NPI number is 1619911021. It was assigned on June 15, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Hillel Sander Hammerman?

Dr. Hillel Sander Hammerman is a gastroenterologist in New York, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Hillel Sander Hammerman practice?

Dr. Hammerman practices at 210 E 73rd St, New York, NY 10021-4395. Dr. Hammerman's primary practice is Northwell Health Physician Partners Cardiology at Great Neck, a medical group.

What is Dr. Hillel Sander Hammerman's office phone number?

The practice phone on file for Dr. Hammerman is (212) 288-1030.

What is Dr. Hillel Sander Hammerman's medical license number?

Dr. Hammerman holds New York license 153188.

What medical group is Dr. Hillel Sander Hammerman part of?

Dr. Hammerman is part of Northwell Health Physician Partners Cardiology at Great Neck in Westbury, New York.

Does Dr. Hillel Sander Hammerman accept Medicare?

Yes. CMS data shows Dr. Hammerman billed Medicare for 165 services in 2021.

What services does Dr. Hillel Sander Hammerman bill to Medicare?

In 2021, Dr. Hammerman's most billed Medicare services were surgery: heart and blood vessels (36415), office visit, established patient (99214) and office visit, established patient (99213).

What drugs does Dr. Hillel Sander Hammerman prescribe most?

In 2022 Medicare Part D data, Dr. Hammerman's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.

Has Dr. Hillel Sander Hammerman received payments from drug or device companies?

CMS Open Payments shows $108 in general payments to Dr. Hammerman from 6 companies from 2016 to 2017. The largest total came from Shire North American Group Inc.

Show 3 more questionsShow fewer questions

How long has Dr. Hillel Sander Hammerman been practicing?

Dr. Hammerman's NPI was assigned in 2006.

Does Dr. Hillel Sander Hammerman do research?

Dmand AI links 1 publication to Dr. Hammerman.

Who does Dr. Hillel Sander Hammerman publish with?

Dr. Hammerman's most frequent co-authors are Howard Warren Bruckner, MD (1 shared paper), Seth Cohen (1 shared paper) and Andrew Michael Fader, MD (1 shared paper).

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