Dr. Heustein L. Sy, MD
- Medicare services, 2024
- 253
- Medicare patients, 2024
- 95
- MIPS score, 2024
- 93
- Hospital affiliations
- 2
- Industry payments
- $91
- Practice address
- 525 East 68th Street, New York, NY 10065
- Practice phone
- Call (212) 746-5454
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Sy'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. Heustein L. Sy is an internist in New York, New York
Dr. Sy practices at NewYork-Presbyterian/Weill Cornell Medical Center in New York, New York, part of NewYork-Presbyterian Hospital.
Dr. Sy's NPI, 1326229691, was assigned on November 15, 2007. Dr. Sy holds New York license 276346-1.
- NPI
- 1326229691NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587889548
- NPI enumeration date
- November 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 746-5454
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Heustein L. Sy practices at NewYork-Presbyterian/Weill Cornell Medical Center in New York, New York
Dr. Sy's primary practice is NewYork-Presbyterian/Weill Cornell Medical Center, at 525 East 68th Street, New York, NY 10065 in New York County. The practice phone is (212) 746-5454.
- NewYork-Presbyterian/Weill Cornell Medical Center525 East 68th Street, New York, NY 10065 · New York CountyPhone(212) 746-5454
Source: Dmand AI Affiliation Data
Dr. Heustein L. Sy is affiliated with 4 sites of care and 1 medical group
Dr. Sy's primary practice is NewYork-Presbyterian/Weill Cornell Medical Center in New York, New York, part of NewYork-Presbyterian Hospital. Dr. Sy is also affiliated with Lenox Hill Hospital. The medical group on file is Northwell Health Physician Partners Cardiology at Great Neck. Dmand AI also links Dr. Sy to 2 more clinical labs, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Heustein L. Sy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sy practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NewYork-Presbyterian/Weill Cornell Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Heustein L. Sy is one of 9,643 internists in New York
Internal medicine is Dr. Sy's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Sy's licenses on file in 2 states: New York and New Jersey.
Specialties and state licenses
- Internal medicine, New YorkPrimary
- New Jersey license
Internists near Dr. Sy
Counts of internists 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. Heustein L. Sy billed Medicare for 253 services in 2024
CMS data shows 253 Medicare services from Dr. Sy across 3 procedure codes in 2024, for 95 Medicare patients. Medicare paid $38,060 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Sy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2092024: 25321%
Dr. Sy compared with the New York median for internists, 2024
- Dr. Sy
- New York median
- Medicare services
- 253vs 42641% below
- Medicare patients
- 95vs 15840% below
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Sy'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. Heustein L. Sy treated 95 Medicare patients in 2024, average age 78
CMS counts 95 Medicare patients who saw Dr. Sy in 2024. The largest group is 75 to 84, with 41 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 1.63, 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. Sy's median patient age at 66, with 55% women.
Dr. Sy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Sy's Medicare patients by sex, 2024
- Women5659%
- Men3941%
Chronic conditions among Dr. Sy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Stroke or TIA75%
- Arthritis64%
- Ischemic heart disease53%
- Mood disorders47%
- Diabetes44%
- Anxiety37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sy'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
- Women55%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Heustein L. Sy scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Sy for performance year 2024, reported through an alternative payment model (APM). Dr. Sy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Sy's MIPS scores, performance year 2024
- 93of 100Final score
- 79.8of 100Quality
- 89of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Heustein L. Sy received $91 in industry payments from 2016 to 2017
CMS Open Payments shows 3 general payments to Dr. Sy from 3 drug and device companies from 2016 to 2017. Consulting fees make up the largest share, 55% of the total. Arrow International, Inc. paid the most, $50.
General payments to Dr. Sy by program year, 2016 to 2017
General payments to Dr. Sy by kind, 2016 to 2017
- Consulting fees$5055%
- Food and beverage$4145%
Companies that paid Dr. Sy the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Heustein L. Sy'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Heustein L. Sy
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. Heustein L. Sy's NPI number?
Dr. Heustein L. Sy's NPI number is 1326229691. It was assigned on November 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Heustein L. Sy?
Dr. Heustein L. Sy is an internist in New York, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Heustein L. Sy practice?
Dr. Sy practices at 525 East 68th Street, New York, NY 10065. Dr. Sy's primary practice is NewYork-Presbyterian/Weill Cornell Medical Center in New York, New York, part of NewYork-Presbyterian Hospital. Dmand AI also links Dr. Sy to 2 clinical labs.
What is Dr. Heustein L. Sy's office phone number?
The practice phone on file for Dr. Sy is (212) 746-5454.
What is Dr. Heustein L. Sy's medical license number?
Dr. Sy holds New York license 276346-1, one of the licenses on file in 2 states.
Which states has Dr. Heustein L. Sy been licensed in?
Dmand AI has state licenses on file for Dr. Sy in New York and New Jersey.
Which hospitals is Dr. Heustein L. Sy affiliated with?
Dr. Sy practices at NewYork-Presbyterian/Weill Cornell Medical Center in New York, New York. Dr. Sy is also affiliated with Lenox Hill Hospital.
What medical group is Dr. Heustein L. Sy part of?
Dr. Sy is linked to Northwell Health Physician Partners Cardiology at Great Neck.
Does Dr. Heustein L. Sy accept Medicare?
Yes. CMS data shows Dr. Sy billed Medicare for 253 services in 2024, and Dr. Sy accepts Medicare assignment.
What is Dr. Heustein L. Sy's MIPS score?
Dr. Sy's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Heustein L. Sy see?
CMS counts 95 Medicare patients who saw Dr. Sy in 2024, with an average age of 78.
What services does Dr. Heustein L. Sy bill to Medicare?
In 2024, Dr. Sy's most billed Medicare services were critical care (99291), critical care (99292) and hospital inpatient care (99233).
Has Dr. Heustein L. Sy received payments from drug or device companies?
CMS Open Payments shows $91 in general payments to Dr. Sy from 3 companies from 2016 to 2017. The largest total came from Arrow International, Inc.
How long has Dr. Heustein L. Sy been practicing?
Dr. Sy graduated from medical school in 2001, 25 years ago.
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