DR. JULIANA JOHNSON FERRI GUERRA MD
NPI 1003435579
Internal Medicine - Endocrinology, Diabetes & Metabolism in Sioux Falls, SD
About Dr. Juliana Johnson Ferri Guerra Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JULIANA JOHNSON FERRI GUERRA MD (NPI 1003435579) is an individual endocrinology, diabetes & metabolism provider in Sioux Falls, South Dakota, licensed in South Dakota (16839) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, is affiliated with Orange City Area Health System, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
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
Dr. Juliana Johnson Ferri Guerra Md 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 Juliana Ferri Guerra 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
- 1,097 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 Westbrook Medical Center
Critical Access Hospitals · Westbrook, MNOrtonville Area Health Services
Critical Access Hospitals · Ortonville, MNSanford 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
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 Juliana Ferri Guerra's NPI number?
The NPI number for Juliana Ferri Guerra is 1003435579. It was assigned to this individual provider in the NPPES registry on April 14, 2020. The provider is also known as Dr. Juliana Guerra MD.
Where is Juliana Ferri Guerra located?
Juliana Ferri Guerra practices at 1305 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 328-8700.
What is Juliana Ferri Guerra's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.
Is Juliana Ferri Guerra enrolled in Medicare?
Yes. Juliana Ferri Guerra 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 Juliana Ferri Guerra's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Juliana Ferri Guerra reassigns Medicare benefits to Sanford Medical Center (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 Juliana Ferri Guerra's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Juliana Ferri Guerra accept?
Health plans from Sanford Health Plan, Wellmark Health Plan of Iowa, Inc. and Wellmark of South Dakota, Inc. list Juliana Ferri Guerra 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 Juliana Ferri Guerra affiliated with any hospitals?
According to CMS data, Juliana Ferri Guerra is affiliated with Orange City Area Health System, Sanford Worthington Medical Center, Sanford Westbrook Medical Center, Ortonville Area Health Services and Sanford Usd Medical Center.
When was this NPI record last updated?
The NPPES record for Juliana Ferri Guerra was last updated on September 4, 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.
# Dr. Juliana Johnson Ferri Guerra, MD · NPI 1003435579
Endocrinology, Diabetes & Metabolism physician in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since April 14, 2020.
## Identity
- **NPI:** 1003435579 (Entity type: Individual)
- **Enumerated:** April 14, 2020
- **Primary specialty:** Internal Medicine - Endocrinology, Diabetes & Metabolism · taxonomy 207RE0101X
- **State license:** 16839 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1305 W 18TH ST, Sioux Falls, SD 57105-0401
- **Phone:** (605) 328-8700
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Sanford Medical Center (NPI 1093090342, Sioux Falls, SD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** September 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1003435579) · Data from the CMS NPPES public registry.