Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Nephrology

Sarah C. Hryzak, DO

Works at hospitals in Middleburg, FL · Jacksonville, FL · St. Johns, FL · Florida

Summary

Dr. Sarah C. Hryzak, DO is a nephrologist at 2 Shircliff Way 700 Depaul Bldg, Nephrology Associates of Northeast, Jacksonville, FL 32204. Phone: (904) 389-5333. Accepts Medicare assignment. In 2024, Sarah C. Hryzak had 222 Original Medicare patients and 517 services. NPI 1942704648. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Sarah C. Hryzak, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Sarah C. Hryzak accept Medicare assignment?
Yes. Medicare's clinician data says Sarah C. Hryzak accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Sarah C. Hryzak see?
In 2024, CMS data shows 222 Original Medicare patients and 517 services for Sarah C. Hryzak. This counts Original Medicare only and measures volume, not quality.
What is Sarah C. Hryzak's NPI number?
1942704648. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Sarah C. Hryzak, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients222
Services billed to Medicare517
Different services or procedures17
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)256 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)89 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)47 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)26 services
  5. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)13 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Chronic kidney disease75%
  • Ischemic heart disease64%
  • Diabetes62%
  • Heart failure62%

Hospitals where Sarah C. Hryzak works

Medicare's Facility Affiliation Data lists Sarah C. Hryzak at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Sarah C. Hryzak is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Sarah C. Hryzak as a member of this group (CMS data updated October 2, 2026).

  • James D Baker III MD PA19 clinicians in the group

Specialties

Find other Nephrology doctors in Florida →

Other nephrologists in Jacksonville

Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.

All nephrologists in Jacksonville →

Other clinicians in James D Baker III MD PA

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Graduation year2023 (3 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1942704648
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians