DONALD R. KNOTTS, M.D. INC
NPI 1750589560
Clinic/Center - Medical Specialty in Castro Valley, CA
NPI Status: Active since July 03, 2007
Contact Information
20130 LAKE CHABOT RD
SUITE 309
CASTRO VALLEY, CA
ZIP 94546
Phone: (510) 886-3701
Fax: (510) 537-3194
- Organization
- Clinic/Center
- Medical Specialty
About DONALD R. KNOTTS, M.D. INC
This page provides the complete NPI Profile along with additional information for Donald R. Knotts, M.d. Inc, a provider established in Castro Valley, California operating as a Clinic/center, focusing in medical specialty . The healthcare provider is registered in the NPI registry with number 1750589560 assigned on July 2007. The practitioner's primary taxonomy code is 261QM2500X with license number G35548 (CA). The provider is registered as an organization and their NPI record was last updated 6 years ago. The authorized official of this NPI record is Donald R. Knotts M.d. (Owner)
- NPI
- 1750589560
- Provider Name
- DONALD R. KNOTTS, M.D. INC
- Entity Type
- Organization
- Location Address
- 20130 LAKE CHABOT RD SUITE 309 CASTRO VALLEY, CA 94546
- Location Phone
- (510) 886-3701
- Location Fax
- (510) 537-3194
- Mailing Address
- 20130 LAKE CHABOT RD SUITE 309 CASTRO VALLEY, CA 94546
- Mailing Phone
- (510) 886-3701
- Mailing Fax
- (510) 537-3194
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 07-03-2007
- Last Update Date
- 08-22-2020
- 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
Clinic/Center Medical Specialty
- Taxonomy Code
- 261QM2500X
- Type
- Ambulatory Health Care Facilities
- License No.
- G35548
- License State
- CA
- Taxonomy Description
- An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to a specific area of medical specialization. Frequently used for Title V related Children's Specialty services or to meet specific public health needs (e.g., infectious diseases or breast and cervical cancer).
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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 1750589560, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
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 60 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 8 providers are registered at the same or a nearby location.
CASTRO VALLEY, CA 94546
CASTRO VALLEY, CA 94546
CASTRO VALLEY, CA 94546
CASTRO VALLEY, CA 94546
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1750589560, enumerated as an "organization" on July 03, 2007.
The provider is located at 20130 LAKE CHABOT RD SUITE 309 CASTRO VALLEY, CA 94546 and the phone number is (510) 886-3701.
Clinic/Center with taxonomy code 261QM2500X and a focus in Medical Specialty.
