DR. JULIANA JOHNSON FERRI GUERRA MD
NPI 1003435579
Internal Medicine - Endocrinology, Diabetes & Metabolism in Sioux Falls, SD

NPI Status: Active since April 14, 2020

Contact Information

1305 W 18TH ST
SIOUX FALLS, SD
ZIP 57105
Phone: (605) 328-8700

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  • Individual
  • Female
  • Years of Experience 13
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About JULIANA FERRI GUERRA

This page provides the complete NPI Profile along with additional information for Juliana Ferri Guerra, an internist established in Sioux Falls, South Dakota with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism and more than 13 years of experience. The healthcare provider is registered in the NPI registry with number 1003435579 assigned on April 2020. The practitioner's primary taxonomy code is 207RE0101X with license number 16839 (SD). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1003435579
Provider Name
DR. JULIANA JOHNSON FERRI GUERRA MD
Other Name
DR. JULIANA GUERRA MD
Other Name Type
Professional Name (2)
Gender
Female
Entity Type
Individual
Location Address
1305 W 18TH ST SIOUX FALLS, SD 57105
Location Phone
(605) 328-8700
Mailing Address
1305 W 18TH ST SIOUX FALLS, SD 57105
Medical School Name
OTHER
Graduation Year
2013
Is Sole Proprietor?
No
Enumeration Date
04-14-2020
Last Update Date
09-04-2025
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An internist like Juliana Ferri Guerra is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Secondary Locations

  • 9500 Euclid Ave # F20
    Cleveland, OH 44195
    (216) 444-6568
  • 4300 Alton Rd
    Miami Beach, FL 33140
    (786) 439-4442

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License No.
16839
License State
SD
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Sanford Individual TRUE $1,750 - HMO
  • Sanford Individual TRUE $10,600 - HMO
  • Sanford Individual TRUE $3,500 - HMO
  • Sanford Individual TRUE $4,750 - HMO
  • Sanford Individual TRUE $6,500 - HMO
  • Sanford Individual TRUE $7,200 HSA Qualified - HMO
  • Sanford Individual TRUE Standardized $2,000 - HMO
  • Sanford Individual TRUE Standardized $6,000 - HMO
  • Sanford Individual TRUE Standardized $7,500 - HMO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Juliana Ferri Guerra is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Juliana Ferri Guerra is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 547620296

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20250918002630

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $31.69 for a new patient copayment and $24.47 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 57105 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $126.78
  • Minimum New Patient Price $55.52
  • Maximum New Patient Price $167.23
  • Average New Patient Copayment $31.69
  • Minimum New Patient Copayment $13.88
  • Maximum New Patient Copayment $41.8

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $97.88
  • Minimum Established Patient Price $18.08
  • Maximum Established Patient Price $137.08
  • Average Established Patient Copayment $24.47
  • Minimum Established Patient Copayment $4.52
  • Maximum Established Patient Copayment $34.27

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Juliana Ferri Guerra is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
SANFORD WORTHINGTON MEDICAL CENTER1018 SIXTH AVENUE PO BOX 997
WORTHINGTON, MN 56187
(507) 372-3110Acute Care Hospitals
SANFORD USD MEDICAL CENTER1305 W 18TH ST POST OFFICE BOX 5039
SIOUX FALLS, SD 57117
(605) 333-1000Acute Care Hospitals

Reviews for DR. JULIANA JOHNSON FERRI GUERRA MD

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1003435579, we treat the final digit (9) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
0
Doubled → 0
Pos 4
3
Unchanged
Pos 5
4
Doubled → 8
Pos 6
3
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
5
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
9
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 0 → 0 4 → 8 5 → 10 → 1 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 0 + 3 + 8 + 3 + 1 + 0 + 5 + 1 + 4 + 24 = 51

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1003435579.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

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1305 W 18TH ST
SIOUX FALLS, SD 57105
Family Medicine
1305 W 18TH ST
SIOUX FALLS, SD 57105
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SIOUX FALLS, SD 57105
Pathology (Anatomic Pathology & Clinical Pathology)
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Specialist (Graphics Designer)
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SIOUX FALLS, SD 57105
Pathology (Anatomic Pathology & Clinical Pathology)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Pathology (Anatomic Pathology & Clinical Pathology)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Pathology (Anatomic Pathology & Clinical Pathology)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Anesthesiology
1305 W 18TH ST
SIOUX FALLS, SD 57105
Physician Assistant
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003435579, enumerated as an "individual" on April 14, 2020.

The provider is located at 1305 W 18TH ST SIOUX FALLS, SD 57105 and the phone number is (605) 328-8700.

Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.

The provider might be accepting Accepts: Sanford Health Plan. Please consult your insurance carrier or call the provider to verify.

Juliana Ferri Guerra is affiliated with: SANFORD WORTHINGTON MEDICAL CENTER and SANFORD USD MEDICAL CENTER.