LYDIA HORVATH
NPI 1538803044
Hospitalist in Sioux Falls, SD
About Lydia Horvath NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LYDIA HORVATH (NPI 1538803044) is an individual hospitalist provider in Sioux Falls, South Dakota, licensed in South Dakota (17662) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, is affiliated with Orange City Area Health System, and maintains a secondary practice location in Stratford.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lydia Horvath is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Lydia Horvath reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sioux Falls, SD 57105
- Reassigned Medicare billing, South Dakota enrollment
- 826 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Orange City Area Health System
Critical Access Hospitals · Orange City, IASanford Worthington Medical Center
Acute Care Hospitals · Worthington, MNSanford Luverne Medical Center
Critical Access Hospitals · Luverne, MNPrairie Lakes Healthcare System, Inc
Acute Care Hospitals · Watertown, SDSanford Usd Medical Center
Acute Care Hospitals · Sioux Falls, SDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 57105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SIOUX FALLS, SD 57105
SIOUX FALLS, SD 57105
SIOUX FALLS, SD 57105
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lydia Horvath's NPI number?
The NPI number for Lydia Horvath is 1538803044. It was assigned to this individual provider in the NPPES registry on April 21, 2022.
Where is Lydia Horvath located?
Lydia Horvath practices at 1305 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 328-4973.
What is Lydia Horvath's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Lydia Horvath enrolled in Medicare?
Yes. Lydia Horvath is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Lydia Horvath's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lydia Horvath reassigns Medicare benefits to Sanford Clinic (Sioux Falls, SD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lydia Horvath's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lydia Horvath accept?
Health plans from Medica, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Lydia Horvath as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Lydia Horvath affiliated with any hospitals?
According to CMS data, Lydia Horvath is affiliated with Orange City Area Health System, Sanford Worthington Medical Center, Sanford Luverne Medical Center, Prairie Lakes Healthcare System, Inc and Sanford Usd Medical Center.
When was this NPI record last updated?
The NPPES record for Lydia Horvath was last updated on September 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Lydia Horvath · NPI 1538803044
Hospitalist physician in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since April 21, 2022.
## Identity
- **NPI:** 1538803044 (Entity type: Individual)
- **Enumerated:** April 21, 2022
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 17662 (South Dakota)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1305 W 18TH ST, Sioux Falls, SD 57105-0401
- **Phone:** (605) 328-4973
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Sanford Clinic (NPI 1043583537, Sioux Falls, SD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rowan University School Of Osteopathic Medicine, class of 2022
## Record status
- **NPPES last updated:** September 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1538803044) · Data from the CMS NPPES public registry.