NPPES file of Aug 9, 2026

Katerina Hysi, MD

Nephrology Physician · New York, NY

Katerina Hysi, MD is a nephrology physician with a practice address in New York, New York, and NPI 1902329691, issued on Jul 25, 2017. Check the license (New York 306398, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1902329691
Name
Katerina Hysi
Credential
MD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
306398 NY
Self-reported in NPPES; status is on the state search
Practice location
403 E 34TH St, New York, NY 10016
Phone
(267) 885-4530
Enumerated
Jul 25, 2017
Record last updated
Sep 19, 2023
Fax
(212) 263-8157
Medicare enrollment
Enrolled (PECOS I20230718001250); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 403 E 34TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Diane Brunelli, NPFamily Nurse Practitioner1437465812
  2. Alyssa Diaz, AGACNP-BCAcute Care Nurse Practitioner1275140758
  3. Ahmed Fahmy, M.D.Transplant Surgery Physician1407842883
  4. Erika Fernandez, N.P.Family Nurse Practitioner1396077053
  5. Bruce Gelb, M.D.Transplant Surgery Physician1780861054
  6. Pamela Hill, NPAdult Health Nurse Practitioner1760779151

Verify Katerina Hysi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 306398
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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95% fewer Medicare Part D claims than the average nephrology physician in 2024

75 Medicare Part D claims for 17 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.

  1. Katerina Hysi75
  2. Specialty average1,465

Most prescribed

  1. Famotidine19 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. New York UniversityNew York, NY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katerina Hysi among 1,049 nephrology physician records in New York

Katerina Hysi, MD is one of 1,049 nephrology physician records with a practice address in New York. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 89% of them.

  • NPI issued2017 · 89% of these records are older, 9% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 73% of these records are
  • Graduated2006 · median 1999 among the 764 with a school on file
  • Record last updated2023 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in New York

There are 1,049 nephrology physician records in New York.

The 8 nephrology physician records with the nearest ZIP codes

  1. Judith Benstein, M.D.New York, NY 100161073508065
  2. Richard Gilbert, MDNew York, NY 100161417939547
  3. Charles Langs, M.D.New York, NY 100161225023229
  4. David Liu, M.D.New York, NY 100161568476265
  5. Daniel Matalon, MDNew York, NY 100161972579530
  6. Albert Matalon, M.D.New York, NY 100161033174834
  7. Robert Matalon, M.D.New York, NY 100161730114463
  8. Jeffrey Michael, M.D.New York, NY 100161467472712

Common questions

What is Katerina Hysi, MD's NPI number?

Katerina Hysi, MD's National Provider Identifier (NPI) is 1902329691, issued on Jul 25, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Katerina Hysi, MD located?

The NPPES record lists a practice address at 403 E 34TH St, New York, NY, 10016. Phone: (267) 885-4530. Providers update this record themselves, so call before visiting.

How can I verify Katerina Hysi, MD's license?

NPPES lists New York license number 306398, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Katerina Hysi, MD prescribe under Medicare Part D?

In 2024, Katerina Hysi, MD had 75 Medicare Part D claims for 17 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.