OLIVIA OSTUNIO RDN
NPI 1881577559
Dietitian, Registered in Orange, CA
NPI Status: Active since July 29, 2025
Contact Information
101 THE CITY DR S UNIT 23
ORANGE, CA
ZIP 92868
Phone: (714) 456-6684
This NPI profile has been added to the NPI registry within the last 30 days.
- Individual
- Female
- Dietitian, Registered
About OLIVIA OSTUNIO
This page provides the complete NPI Profile along with additional information for Olivia Ostunio, a provider established in Orange, California with a medical specialization in Dietitian, Registered. The healthcare provider is registered in the NPI registry with number 1881577559 assigned on July 2025. The practitioner's primary taxonomy code is 133V00000X with license number 86042648 (). The provider is registered as an individual and her NPI record was last updated July 2025.
- NPI
- 1881577559
- Provider Name
- OLIVIA OSTUNIO RDN
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 101 THE CITY DR S UNIT 23 ORANGE, CA 92868
- Location Phone
- (714) 456-6684
- Mailing Address
- 101 THE CITY DR S UNIT 23 ORANGE, CA 92868
- Mailing Phone
- (714) 456-6684
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-29-2025
- Last Update Date
- 07-29-2025
- Code Navigator
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
Dietitian, Registered
- Taxonomy Code
- 133V00000X
- Type
- Dietary & Nutritional Service Providers
- License No.
- 86042648
- Taxonomy Description
- A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 8 | 8 | 1 | 5 | 7 | 7 | 5 | 5 | 9 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 8 | 16 | 1 | 10 | 7 | 14 | 5 | 10 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 8 + 1 + 6 + 1 + 1 + 0 + 7 + 1 + 4 + 5 + 1 + 0 + 24 = 61 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 61 = 9 | 9 | ||||||||
The NPI number 1881577559 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1881577559, enumerated as an "individual" on July 29, 2025.
The provider is located at 101 THE CITY DR S UNIT 23 ORANGE, CA 92868 and the phone number is (714) 456-6684.
Dietitian, Registered with taxonomy code 133V00000X.
