Katherine Ni

  • New York, NY
  • Transplant hepatology physician
NPI1063916062PAC ID5799021432
Medicare services, 2024
29
Medicare patients, 2024
43
Part D claims, 2024
257
Publications
7
Hospital affiliations
2
Practice address
4300 Alton Rd, Miami Beach, FL 33140
Practice phone
Call (305) 674-2121
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Mount Sinai Medical Center

Hospital · Miami Beach, Florida

See all 4 affiliations

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Katherine Ni is a transplant hepatology physician in New York, New York

Katherine Ni practices at Mount Sinai Medical Center in Miami Beach, Florida, part of Mount Sinai Medical Center of Florida.

Katherine Ni's NPI, 1063916062, was assigned on March 23, 2018. Katherine Ni graduated from New York University Grossman School of Medicine in 2018. Katherine Ni holds New York license 322134.

NPI and contact details
Medicare PAC ID
5799021432
NPI enumeration date
March 23, 2018
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(305) 674-2121
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
34
Medical school graduation
2018

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

Katherine Ni practices in Miami Beach and New York

Katherine Ni's primary practice is Mount Sinai Medical Center, at 4300 Alton Rd, Miami Beach, FL 33140 in Miami-Dade County. The practice phone is (305) 674-2121. Katherine Ni also practices at Mount Sinai Medical Center, 5 E 98th St, New York, NY 10029.

  • Mount Sinai Medical CenterPrimary
    4300 Alton Rd, Miami Beach, FL 33140 · Miami-Dade CountyPhone(305) 674-2121
  • Mount Sinai Medical Center
    5 E 98th St, New York, NY 10029 · New York CountyPhone(212) 241-8035

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

Katherine Ni is affiliated with 3 sites of care and 1 medical group

Katherine Ni's primary practice is Mount Sinai Medical Center in Miami Beach, Florida, part of Mount Sinai Medical Center of Florida. Katherine Ni is also affiliated with The Mount Sinai Hospital. The medical group on file is Mount Sinai Institute for Liver Medicine. Dmand AI also links Katherine Ni to 1 more group practice or clinic, named with a free account.

See all 4 affiliations for Katherine Ni

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

Dmand AI tracks the EHR system at Katherine Ni's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Katherine Ni practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mount Sinai Medical CenterAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Katherine Ni is one of 26 transplant hepatology physicians in New York

Transplant hepatology is Katherine Ni's primary specialty in the NPI Registry, under taxonomy code 207RT0003X. Katherine Ni is licensed in New York.

Specialties and state licenses

  • Transplant hepatology, New YorkPrimaryLicense 322134 · taxonomy 207RT0003X

Transplant hepatology physicians near Katherine Ni

Counts of transplant hepatology physicians 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

Katherine Ni billed Medicare for 29 services in 2024

CMS data shows 29 Medicare services from Katherine Ni across 2 procedure codes in 2024, for 43 Medicare patients. Medicare paid $2,712 for them.

Medicare services, 202429
Medicare patients43
Paid by Medicare$2,712
Procedure codes2

Where Katherine Ni's Medicare services took place, 2024

  • In an office1862%
  • In a facility1138%

Katherine Ni compared with the New York median for transplant hepatology physicians, 2024

  • Katherine Ni
  • New York median
Medicare services
29vs 20486% below
Medicare patients
43vs 10459% below
Part D claims
102vs 8915% above

Medians across 26 transplant hepatology physicians in New York with Dmand AI profiles that report each measure.

Katherine Ni'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.

See all procedures by Katherine Ni

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

Katherine Ni treated 43 Medicare patients in 2024, average age 68

CMS counts 43 Medicare patients who saw Katherine Ni in 2024. The largest group is 65 to 74, with 17 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 33% are also on Medicaid. Their average risk score is 3.26, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Katherine Ni's median patient age at 58, with 48% women.

Medicare patients, 202443
Average age68
Average risk score3.26
Also on Medicaid33%

Katherine Ni's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Katherine Ni's Medicare patients by sex, 2024

  • Women1637%
  • Men2763%

Chronic conditions among Katherine Ni's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol67%
  3. Chronic kidney disease53%
  4. Diabetes53%
  5. Arthritis42%
  6. Ischemic heart disease35%
  7. Heart failure30%
  8. Atrial fibrillation28%

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

Katherine Ni's patients across all payers

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

Patient panel by age, all payers

Median age 58

Patient panel by sex, all payers

  • Women48%
  • Men49%

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

Katherine Ni wrote 257 Medicare Part D claims in 2024

In 2024, Katherine Ni wrote 257 Medicare Part D claims for 75 patients. 86% of them were for generic drugs. CMS names the drug for 102 of them, across 6 drugs with 11 or more claims each, at $9,829 in total drug cost. In 2023, CMS named 51 claims across 4 drugs.

Part D claims, 2024257
Drugs named by CMS6
Total drug cost$9,829
Part D patients75

Katherine Ni's Part D claims by kind of drug, 2024

  • Generic220 claims86%
  • Brand-name and other37 claims14%

Katherine Ni'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.

Drug classes CMS tracks in Katherine Ni's Part D claims, 2024

  • Antibiotics8%20 of 257 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 512024: 102100%

Drugs named by CMS: 6 in 2024, 4 in 2023.

See all prescribing by Katherine Ni

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

Katherine Ni ranks in the 45th percentile for colonoscopy in Medicare

Katherine Ni accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 16 procedures of colonoscopy by Katherine Ni, more than 45% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Katherine Ni ranks in Medicare procedure volume

Colonoscopy
45th percentile16 procedures

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

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)

For MedTech and pharma teams

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Katherine Ni has 7 publications on record

Dmand AI links 7 papers to Katherine Ni, published from 2017 to 2021. The most frequent topics are Corneal Stroma, Lasers, Excimer and Visual Acuity. Katherine Ni's most frequent co-authors are Scott Eliot Sherman, MD, Sanya Anand, DO and Emily Jane Gallagher, BAO, BCH, MB.

Papers7
Years published2017 to 2021

Katherine Ni's papers by year, 2017 to 2021

Topics Katherine Ni writes about most

  • Corneal Stroma
  • Lasers, Excimer
  • Visual Acuity
  • Corneal Topography
  • Keratomileusis, Laser In Situ
  • Medicare
  • Myopia
  • Refraction, Ocular

Katherine Ni's most frequent co-authors

Recent publications by Katherine Ni

See all 7 publications and co-authors

See who Katherine Ni researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Katherine Ni works with, so you can find a warm path to the right transplant hepatology physicians.

How network discovery works

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

Katherine Ni received $687 in industry payments from 2024 to 2025

CMS Open Payments shows 7 general payments to Katherine Ni from 5 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 86% of the total. Gilead Sciences, Inc. paid the most, $241.

General payments to Katherine Ni by program year, 2024 to 2025

General payments to Katherine Ni by kind, 2024 to 2025

$687in total
  • Food and beverage$58886%
  • Education$9914%

Companies that paid Katherine Ni the most, 2024 to 2025

Share is of all general payments to this clinician.

See all payments to Katherine Ni

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

Katherine Ni graduated from New York University Grossman School of Medicine

Katherine Ni graduated from New York University Grossman School of Medicine in 2018.

  1. Medical schoolNew York University Grossman School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Katherine Ni'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)Medicare Part D Prescribers - by Provider (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)
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)
Training, board certification and membershipsDmand AI Professional Profile Data
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 Katherine Ni

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Katherine Ni's NPI number?

Katherine Ni's NPI number is 1063916062. It was assigned on March 23, 2018, and it is active in the NPI Registry.

What does Katherine Ni specialize in?

Katherine Ni is a transplant hepatology physician in New York, New York. The primary specialty in the NPI Registry is Transplant Hepatology Physician (taxonomy code 207RT0003X).

Where does Katherine Ni practice?

Katherine Ni practices at 4300 Alton Rd, Miami Beach, FL 33140. Katherine Ni also practices at 5 E 98th St, New York, NY 10029. Katherine Ni's primary practice is Mount Sinai Medical Center in Miami Beach, Florida, part of Mount Sinai Medical Center of Florida. Dmand AI also links Katherine Ni to 1 group practice or clinic.

What is Katherine Ni's office phone number?

The practice phone on file for Katherine Ni is (305) 674-2121.

What is Katherine Ni's medical license number?

Katherine Ni holds New York license 322134.

Which hospitals is Katherine Ni affiliated with?

Katherine Ni practices at Mount Sinai Medical Center in Miami Beach, Florida. Katherine Ni is also affiliated with The Mount Sinai Hospital.

What medical group is Katherine Ni part of?

Katherine Ni is linked to Mount Sinai Institute for Liver Medicine.

Does Katherine Ni accept Medicare?

Yes. CMS data shows Katherine Ni billed Medicare for 29 services in 2024, and Katherine Ni accepts Medicare assignment.

How many Medicare patients does Katherine Ni see?

CMS counts 43 Medicare patients who saw Katherine Ni in 2024, with an average age of 68.

What services does Katherine Ni bill to Medicare?

In 2024, Katherine Ni's most billed Medicare services were office visit, established patient (99213) and hospital inpatient care (99222).

Show 6 more questionsShow fewer questions

Where did Katherine Ni go to medical school?

Katherine Ni graduated from New York University Grossman School of Medicine in 2018.

What drugs does Katherine Ni prescribe most?

In 2024 Medicare Part D data, Katherine Ni's most prescribed drugs by claims were Pantoprazole Sodium, Ursodiol and Carvedilol.

Has Katherine Ni received payments from drug or device companies?

CMS Open Payments shows $687 in general payments to Katherine Ni from 5 companies from 2024 to 2025. The largest total came from Gilead Sciences, Inc.

How long has Katherine Ni been practicing?

Katherine Ni graduated from medical school in 2018, 8 years ago.

Does Katherine Ni do research?

Dmand AI links 7 publications to Katherine Ni, published from 2017 to 2021.

Who does Katherine Ni publish with?

Katherine Ni's most frequent co-authors are Scott Eliot Sherman, MD (2 shared papers), Sanya Anand, DO (1 shared paper) and Emily Jane Gallagher, BAO, BCH, MB (1 shared paper).

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