RYAN DAVID GUERRETTAZ MD
NPI 1861951725
Pediatrics - Pediatric Hematology-Oncology in Milwaukee, WI
NPI Status: Active since March 19, 2019
Contact Information
8701 WATERTOWN PLANK RD
MILWAUKEE, WI
ZIP 53226
Phone: (414) 955-4575
- Individual
- Male
- Pediatrics
- Pediatric Hematology-Oncology
About RYAN GUERRETTAZ
This page provides the complete NPI Profile along with additional information for Ryan Guerrettaz, a pediatrician established in Milwaukee, Wisconsin with a medical specialization in Pediatrics, focusing in pediatric hematology-oncology . The healthcare provider is registered in the NPI registry with number 1861951725 assigned on March 2019. The practitioner's primary taxonomy code is 2080P0207X with license number 81491-20 (WI). The provider is registered as an individual and his NPI record was last updated 3 years ago.
- NPI
- 1861951725
- Provider Name
- RYAN DAVID GUERRETTAZ MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 8701 WATERTOWN PLANK RD MILWAUKEE, WI 53226
- Location Phone
- (414) 955-4575
- Mailing Address
- 8701 WATERTOWN PLANK RD MILWAUKEE, WI 53226
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-19-2019
- Last Update Date
- 06-26-2023
- Code Navigator
A pediatrician like Ryan Guerrettaz is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.
Location Map
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
Pediatrics Pediatric Hematology-Oncology
- Taxonomy Code
- 2080P0207X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 81491-20
- License State
- WI
- Taxonomy Description
- A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | 125.074606 (IL) |
| 2 | 390200000X | Student, Health Care | Student in an Organized Health Care Education/Training Program |
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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 1861951725, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
WAUWATOSA, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1861951725, enumerated as an "individual" on March 19, 2019.
The provider is located at 8701 WATERTOWN PLANK RD MILWAUKEE, WI 53226 and the phone number is (414) 955-4575.
Pediatrics with taxonomy code 2080P0207X and a focus in Pediatric Hematology-Oncology.
