KATE DOLORES MASSMAN MS, RD, LD
NPI 1255261525
Dietitian, Registered - Nutrition, Metabolic in Saint Louis, MO
NPI Status: Active since May 20, 2026
Contact Information
1 CHILDRENS PL
SAINT LOUIS, MO
ZIP 63110
Phone: (314) 454-6051
This NPI profile has been added to the NPI registry within the last 30 days.
- Individual
- Female
- Dietitian, Registered
- Nutrition, Metabolic
About KATE MASSMAN
This page provides the complete NPI Profile along with additional information for Kate Massman, a provider established in Saint Louis, Missouri with a medical specialization in Dietitian, Registered, focusing in nutrition, metabolic . The healthcare provider is registered in the NPI registry with number 1255261525 assigned on May 2026. The practitioner's primary taxonomy code is 133VN1006X with license number 2021009243 (MO). The provider is registered as an individual and her NPI record was last updated May 2026.
- NPI
- 1255261525
- Provider Name
- KATE DOLORES MASSMAN MS, RD, LD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 1 CHILDRENS PL SAINT LOUIS, MO 63110
- Location Phone
- (314) 454-6051
- Mailing Address
- 1 CHILDRENS PL SAINT LOUIS, MO 63110
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-20-2026
- Last Update Date
- 05-20-2026
- 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 Nutrition, Metabolic
- Taxonomy Code
- 133VN1006X
- Type
- Dietary & Nutritional Service Providers
- License No.
- 2021009243
- License State
- MO
- Taxonomy Description
- A registered dietitian who achieves specialized competency in metabolic nutrition.
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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 1255261525, 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.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1255261525, enumerated as an "individual" on May 20, 2026.
The provider is located at 1 CHILDRENS PL SAINT LOUIS, MO 63110 and the phone number is (314) 454-6051.
Dietitian, Registered with taxonomy code 133VN1006X and a focus in Nutrition, Metabolic.
