Dr. Nancy Nai-En Tsai, MD
- Medicare services, 2024
- 988
- Medicare patients, 2024
- 205
- Part D claims, 2024
- 11,587
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 99 Elizabeth St 2nd Fl, New York, NY 10013-4729
- Practice phone
- Call (212) 227-8837
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advanced Eye Physician
Eye care practice · New York, New York
Find Dr. Tsai'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. Nancy Nai-En Tsai is an ophthalmologist in New York, New York
Dr. Tsai practices at Advanced Eye Physician in New York, New York.
Dr. Tsai's NPI, 1184732885, was assigned on August 25, 2006. Dr. Tsai graduated from New York Medical College in 1992. Dr. Tsai holds New York license 194271.
- NPI
- 1184732885NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789635715
- NPI enumeration date
- August 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 227-8837
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nancy Nai-En Tsai practices at Advanced Eye Physician in New York, New York
Dr. Tsai's primary practice is Advanced Eye Physician, at 99 Elizabeth St 2nd Fl, New York, NY 10013-4729. The practice phone is (212) 227-8837.
- Advanced Eye Physician99 Elizabeth St 2nd Fl, New York, NY 10013-4729Phone(212) 227-8837
Source: Dmand AI Affiliation Data
Dr. Nancy Nai-En Tsai is affiliated with 2 sites of care and 1 medical group
Dr. Tsai's primary practice is Advanced Eye Physician in New York, New York. Dr. Tsai is also affiliated with Tisch Hospital. Dmand AI also links Dr. Tsai to 1 more medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nancy Nai-En Tsai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tsai practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advanced Eye Physician | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nancy Nai-En Tsai is one of 1,467 ophthalmologists in New York
Ophthalmology is Dr. Tsai's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Tsai is licensed in New York.
Specialties and state licenses
- Ophthalmology, New YorkPrimary
Ophthalmologists near Dr. Tsai
Counts of ophthalmologists 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. Nancy Nai-En Tsai billed Medicare for 988 services in 2024
CMS data shows 988 Medicare services from Dr. Tsai across 15 procedure codes in 2024, for 205 Medicare patients. Medicare paid $48,753 for them.
Dr. Tsai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1,1182024: 75133%
- Office and hospital visits
- 2023: 482024: 213344%
- Imaging
- 2023: 292024: 1259%
- Surgery
- 2023: 282024: 1257%
Where Dr. Tsai's Medicare services took place, 2024
- In an office97699%
- In a facility121%
Dr. Tsai compared with the New York median for ophthalmologists, 2024
- Dr. Tsai
- New York median
- Medicare services
- 988vs 1,25821% below
- Medicare patients
- 205vs 43653% below
- Part D claims
- 11,484vs 64717.7 times
Medians across 1,557 ophthalmologists in New York with Dmand AI profiles that report each measure.
Dr. Tsai'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.
Need commercial claims for Dr. Tsai?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tsai and other ophthalmologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nancy Nai-En Tsai treated 205 Medicare patients in 2024, average age 76
CMS counts 205 Medicare patients who saw Dr. Tsai in 2024. The largest group is 75 to 84, with 83 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 64% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tsai's median patient age at 73, with 56% women.
Dr. Tsai's Medicare patients by age, 2024
Dr. Tsai's Medicare patients by sex, 2024
- Women12762%
- Men7838%
Chronic conditions among Dr. Tsai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes60%
- Arthritis50%
- Ischemic heart disease35%
- Chronic kidney disease32%
- Osteoporosis32%
- Cancer18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tsai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nancy Nai-En Tsai wrote 11,587 Medicare Part D claims in 2024
In 2024, Dr. Tsai wrote 11,587 Medicare Part D claims for 2,002 patients. 34% of them were for generic drugs. CMS names the drug for 11,484 of them, across 38 drugs with 11 or more claims each, at $3,640,583 in total drug cost. In 2023, CMS named 10,602 claims across 37 drugs.
Dr. Tsai's Part D claims by kind of drug, 2024
- Generic3,977 claims34%
- Brand-name7,610 claims66%
Dr. Tsai'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: 10,6022024: 11,4848%
Drugs named by CMS: 38 in 2024, 37 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
How Dr. Nancy Nai-En Tsai takes part in Medicare
Dr. Tsai accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 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. Nancy Nai-En Tsai has 1 publication on record
Dmand AI links 1 paper to Dr. Tsai in 2017.
Recent publications by Dr. Tsai
See who Dr. Tsai researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tsai works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nancy Nai-En Tsai received $39,611 in industry payments from 2016 to 2025
CMS Open Payments shows 411 general payments to Dr. Tsai from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 40% of the total. Horizon Pharma plc paid the most, $14,817.
General payments to Dr. Tsai by program year, 2016 to 2025
General payments to Dr. Tsai by kind, 2016 to 2025
- Food and beverage$15,92840%
- Honoraria$11,72530%
- Speaker and faculty fees$4,05010%
- Travel and lodging$3,90610%
- Other$4,00310%
Companies that paid Dr. Tsai the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nancy Nai-En Tsai graduated from New York Medical College
Dr. Tsai graduated from New York Medical College in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nancy Nai-En Tsai'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Nancy Nai-En Tsai
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. Nancy Nai-En Tsai's NPI number?
Dr. Nancy Nai-En Tsai's NPI number is 1184732885. It was assigned on August 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nancy Nai-En Tsai?
Dr. Nancy Nai-En Tsai is an ophthalmologist in New York, New York. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Nancy Nai-En Tsai practice?
Dr. Tsai practices at 99 Elizabeth St 2nd Fl, New York, NY 10013-4729. Dr. Tsai's primary practice is Advanced Eye Physician in New York, New York. Dmand AI also links Dr. Tsai to 1 medical group.
What is Dr. Nancy Nai-En Tsai's office phone number?
The practice phone on file for Dr. Tsai is (212) 227-8837.
What is Dr. Nancy Nai-En Tsai's medical license number?
Dr. Tsai holds New York license 194271.
Which hospitals is Dr. Nancy Nai-En Tsai affiliated with?
Dr. Tsai is affiliated with Tisch Hospital.
Does Dr. Nancy Nai-En Tsai accept Medicare?
Yes. CMS data shows Dr. Tsai billed Medicare for 988 services in 2024, and Dr. Tsai accepts Medicare assignment.
How many Medicare patients does Dr. Nancy Nai-En Tsai see?
CMS counts 205 Medicare patients who saw Dr. Tsai in 2024, with an average age of 76.
What services does Dr. Nancy Nai-En Tsai bill to Medicare?
In 2024, Dr. Tsai's most billed Medicare services were eye exam or test (92020), eye exam or test (92202) and eye exam or test (92083).
Where did Dr. Nancy Nai-En Tsai go to medical school?
Dr. Tsai graduated from New York Medical College in 1992.
Show 4 more questionsShow fewer questions
What drugs does Dr. Nancy Nai-En Tsai prescribe most?
In 2024 Medicare Part D data, Dr. Tsai's most prescribed drugs by claims were Restasis, Azelastine HCl and Bepotastine Besilate.
Has Dr. Nancy Nai-En Tsai received payments from drug or device companies?
CMS Open Payments shows $39,611 in general payments to Dr. Tsai from 32 companies from 2016 to 2025. The largest total came from Horizon Pharma plc.
How long has Dr. Nancy Nai-En Tsai been practicing?
Dr. Tsai graduated from medical school in 1992, 34 years ago.
Does Dr. Nancy Nai-En Tsai do research?
Dmand AI links 1 publication to Dr. Tsai.
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