Dr. Hsu-Tsai Chi, MD
- Medicare services, 2024
- 468
- Medicare patients, 2024
- 200
- Part D claims, 2024
- 46
- Hospital affiliations
- 1
- Industry payments
- $14,527
- Practice address
- One Healthy Way, Oceanside, NY 11572
- Practice phone
- Call (516) 632-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chi'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. Hsu-Tsai Chi is a general surgeon in Oceanside, New York
Dr. Chi practices at Mount Sinai South Nassau in Oceanside, New York, part of Mount Sinai Health System.
Dr. Chi's NPI, 1356760748, was assigned on April 14, 2014. Dr. Chi graduated from New York Medical College in 2014. Dr. Chi holds New York license 323219.
- NPI
- 1356760748NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153756218
- NPI enumeration date
- April 14, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (516) 632-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hsu-Tsai Chi practices at 2 locations in Oceanside, New York
Dr. Chi'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. Chi also practices at South Nassau Communities Hospital, 1 Healthy Way, Oceanside, NY 11572.
- Mount Sinai South NassauPrimaryOne Healthy Way, Oceanside, NY 11572 · Nassau CountyPhone(516) 632-3000
- South Nassau Communities Hospital1 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. Hsu-Tsai Chi is affiliated with 4 sites of care and 2 medical groups
Dr. Chi's primary practice is Mount Sinai South Nassau in Oceanside, New York, part of Mount Sinai Health System. The medical group on file is Mount Sinai Doctors Long Island. Dmand AI also links Dr. Chi to 2 more group practices and clinics, 1 home health agency and 1 medical group, 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. Hsu-Tsai Chi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chi practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mount Sinai South Nassau | 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. Hsu-Tsai Chi is one of 1,604 general surgeons in New York
Surgery is Dr. Chi's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Chi's licenses on file in 2 states: New York and New Jersey.
Specialties and state licenses
- Surgery, New YorkPrimary
- New Jersey license
General surgeons near Dr. Chi
Counts of general surgeons 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. Hsu-Tsai Chi billed Medicare for 468 services in 2024
CMS data shows 468 Medicare services from Dr. Chi across 9 procedure codes in 2024, for 200 Medicare patients. Medicare paid $32,022 for them.
Dr. Chi's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1992024: 30654%
- Surgery
- 2023: 02024: 137
- Tests and treatments
- 2023: 02024: 25
Where Dr. Chi's Medicare services took place, 2024
- In an office24953%
- In a facility21947%
Dr. Chi compared with the New York median for general surgeons, 2024
- Dr. Chi
- New York median
- Medicare services
- 468vs 1543.0 times
- Medicare patients
- 200vs 10983% above
- Part D claims
- 35vs 2446% above
Medians across 1,502 general surgeons in New York with Dmand AI profiles that report each measure.
Dr. Chi'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. Hsu-Tsai Chi treated 200 Medicare patients in 2024, average age 77
CMS counts 200 Medicare patients who saw Dr. Chi in 2024. The largest group is 75 to 84, with 71 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 2.27, 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. Chi's median patient age at 63, with 49% women.
Dr. Chi's Medicare patients by age, 2024
Dr. Chi's Medicare patients by sex, 2024
- Women9347%
- Men10754%
Chronic conditions among Dr. Chi's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Ischemic heart disease52%
- Diabetes51%
- Heart failure41%
- Chronic kidney disease39%
- Atrial fibrillation37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hsu-Tsai Chi wrote 46 Medicare Part D claims in 2024
In 2024, Dr. Chi wrote 46 Medicare Part D claims for 39 patients. 83% of them were for generic drugs. CMS names the drug for 35 of them, across 1 drug with 11 or more claims each, at $256 in total drug cost. In 2023, CMS named 33 claims across 2 drugs.
Dr. Chi's Part D claims by kind of drug, 2024
- Generic38 claims83%
- Brand-name and other8 claims17%
Dr. Chi'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 332024: 356%
Drugs named by CMS: 1 in 2024, 2 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. Hsu-Tsai Chi ranks in the 89th percentile for removal of tissue in Medicare
Dr. Chi accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 154 procedures of removal of tissue by Dr. Chi, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Chi ranks in Medicare procedure volume
- Removal of tissue
- 89th percentile154 procedures
- Hernia repair (minimally invasive)
- 80th percentile14 procedures
- Removal of skin lesions
- 58th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Hsu-Tsai Chi received $14,527 in industry payments from 2020 to 2025
CMS Open Payments shows 53 general payments to Dr. Chi from 12 drug and device companies from 2020 to 2025. Education make up the largest share, 83% of the total. Intuitive Surgical, Inc. paid the most, $13,912.
General payments to Dr. Chi by program year, 2020 to 2025
General payments to Dr. Chi by kind, 2020 to 2025
- Education$12,00083%
- Food and beverage$1,2749%
- Travel and lodging$1,2258%
- Gifts$280%
Companies that paid Dr. Chi the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hsu-Tsai Chi graduated from New York Medical College
Dr. Chi graduated from New York Medical College in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Hsu-Tsai Chi'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 Affiliation DataDmand AI Practice 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) |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| 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. Hsu-Tsai Chi
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. Hsu-Tsai Chi's NPI number?
Dr. Hsu-Tsai Chi's NPI number is 1356760748. It was assigned on April 14, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Hsu-Tsai Chi?
Dr. Hsu-Tsai Chi is a general surgeon in Oceanside, New York. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Hsu-Tsai Chi practice?
Dr. Chi practices at One Healthy Way, Oceanside, NY 11572. Dr. Chi also practices at 1 Healthy Way, Oceanside, NY 11572. Dr. Chi's primary practice is Mount Sinai South Nassau in Oceanside, New York, part of Mount Sinai Health System. Dmand AI also links Dr. Chi to 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Hsu-Tsai Chi's office phone number?
The practice phone on file for Dr. Chi is (516) 632-3000.
What is Dr. Hsu-Tsai Chi's medical license number?
Dr. Chi holds New York license 323219, one of the licenses on file in 2 states.
Which states has Dr. Hsu-Tsai Chi been licensed in?
Dmand AI has state licenses on file for Dr. Chi in New York and New Jersey.
Which hospitals is Dr. Hsu-Tsai Chi affiliated with?
Dr. Chi practices at Mount Sinai South Nassau in Oceanside, New York.
What medical group is Dr. Hsu-Tsai Chi part of?
Dr. Chi is linked to Mount Sinai Doctors Long Island. Dmand AI links Dr. Chi to 1 more medical group.
Does Dr. Hsu-Tsai Chi accept Medicare?
Yes. CMS data shows Dr. Chi billed Medicare for 468 services in 2024, and Dr. Chi accepts Medicare assignment.
How many Medicare patients does Dr. Hsu-Tsai Chi see?
CMS counts 200 Medicare patients who saw Dr. Chi in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Hsu-Tsai Chi bill to Medicare?
In 2024, Dr. Chi's most billed Medicare services were hospital inpatient care (99232), surgery: skin and soft tissue (11042) and office visit, established patient (99212).
Where did Dr. Hsu-Tsai Chi go to medical school?
Dr. Chi graduated from New York Medical College in 2014.
What drugs does Dr. Hsu-Tsai Chi prescribe most?
In 2024 Medicare Part D data, Dr. Chi's most prescribed drugs by claims were Mupirocin.
Has Dr. Hsu-Tsai Chi received payments from drug or device companies?
CMS Open Payments shows $14,527 in general payments to Dr. Chi from 12 companies from 2020 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Hsu-Tsai Chi been practicing?
Dr. Chi graduated from medical school in 2014, 12 years ago.
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