JOSELYN MELISA YE TAY MD
NPI 1609515477
Pediatrics in Ukiah, CA
NPI Status: Active since May 31, 2022
Contact Information
333 LAWS AVE
UKIAH, CA
ZIP 95482
Phone: (707) 468-1010
Fax: (707) 462-7532
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Pediatrics
About JOSELYN YE TAY
This page provides the complete NPI Profile along with additional information for Joselyn Ye Tay, a pediatrician established in Ukiah, California with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1609515477 assigned on May 2022. The practitioner's primary taxonomy code is 208000000X with license number A209638 (CA). The provider is registered as an individual and her NPI record was last updated May 2026.
- NPI
- 1609515477
- Provider Name
- JOSELYN MELISA YE TAY MD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 333 LAWS AVE UKIAH, CA 95482
- Location Phone
- (707) 468-1010
- Location Fax
- (707) 462-7532
- Mailing Address
- PO BOX 102842 PASADENA, CA 91189
- Mailing Phone
- (305) 669-5873
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-31-2022
- Last Update Date
- 05-29-2026
- Code Navigator
A pediatrician like Joselyn Ye Tay 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
- Taxonomy Code
- 208000000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A209638
- License State
- CA
- Taxonomy Description
- A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
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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 1609515477, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).
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 53 is 60. The difference is the calculated check digit.
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Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1609515477, enumerated as an "individual" on May 31, 2022.
The provider is located at 333 LAWS AVE UKIAH, CA 95482 and the phone number is (707) 468-1010.
Pediatrics with taxonomy code 208000000X.
