MELISSA H ORTIZ- VONDRA PMHNP
NPI 1558224105
Nurse Practitioner - Psychiatric/Mental Health in Lyons, IL
NPI Status: Active since December 09, 2025
Contact Information
4249 JOLIET AVE APT 2
LYONS, IL
ZIP 60534
Phone: (773) 961-4200
- Individual
- Female
- Nurse Practitioner
- Psychiatric/Mental Health
About MELISSA ORTIZ- VONDRA
This page provides the complete NPI Profile along with additional information for Melissa Ortiz- Vondra, a provider established in Lyons, Illinois with a medical specialization in Nurse Practitioner, focusing in psychiatric/mental health . The healthcare provider is registered in the NPI registry with number 1558224105 assigned on December 2025. The practitioner's primary taxonomy code is 363LP0808X with license number 041.499.484 (IL). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1558224105
- Provider Name
- MELISSA H ORTIZ- VONDRA PMHNP
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 4249 JOLIET AVE APT 2 LYONS, IL 60534
- Location Phone
- (773) 961-4200
- Mailing Address
- 4249 JOLIET AVE APT 2 LYONS, IL 60534
- Mailing Phone
- (773) 961-4200
- Is Sole Proprietor?
- No
- Enumeration Date
- 12-09-2025
- Last Update Date
- 12-09-2025
- Code Navigator
A nurse practitioner (NP) like Melissa Ortiz- Vondra is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, 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
Nurse Practitioner Psychiatric/Mental Health
- Taxonomy Code
- 363LP0808X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- 041.499.484
- License State
- IL
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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 1558224105, 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 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 55 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1558224105, enumerated as an "individual" on December 09, 2025.
The provider is located at 4249 JOLIET AVE APT 2 LYONS, IL 60534 and the phone number is (773) 961-4200.
Nurse Practitioner with taxonomy code 363LP0808X and a focus in Psychiatric/Mental Health.
