AMANDA CASTLE RDH
NPI 1922955368
Dental Hygienist in Portland, ME
NPI Status: Active since March 13, 2026
Contact Information
716 STEVENS AVE
PORTLAND, ME
ZIP 04103
Phone: (207) 283-0171
- Individual
- Female
- Dental Hygienist
About AMANDA CASTLE
This page provides the complete NPI Profile along with additional information for Amanda Castle, a provider established in Portland, Maine with a medical specialization in Dental Hygienist. The healthcare provider is registered in the NPI registry with number 1922955368 assigned on March 2026. The practitioner's primary taxonomy code is 124Q00000X with license number RDH4500 (ME). The provider is registered as an individual and her NPI record was last updated March 2026.
- NPI
- 1922955368
- Provider Name
- AMANDA CASTLE RDH
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 716 STEVENS AVE PORTLAND, ME 04103
- Location Phone
- (207) 283-0171
- Mailing Address
- 82 HILL ST APT 3 BIDDEFORD, ME 04005
- Mailing Phone
- (781) 484-6810
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-13-2026
- Last Update Date
- 03-13-2026
- Code Navigator
Location Map
Secondary Locations
- 5 Webhannet Pl
Kennebunk, ME 04043
(207) 999-7245
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
Dental Hygienist
- Taxonomy Code
- 124Q00000X
- Type
- Dental Providers
- License No.
- RDH4500
- License State
- ME
- Taxonomy Description
- An individual who has completed an accredited dental hygiene education program, and an individual who has been licensed by a state board of dental examiners to provide preventive care services under the supervision of a dentist. Functions that may be legally delegated to the dental hygienist vary based on the needs of the dentist, the educational preparation of the dental hygienist and state dental practice acts and regulations, but always include, at a minimum, scaling and polishing the teeth. To avoid misleading the public, no occupational title other than dental hygienist should be used to describe this dental auxiliary.
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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 1922955368, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).
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 62 is 70. 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.
PORTLAND, ME 04103
PORTLAND, ME 04103
PORTLAND, ME 04103
PORTLAND, ME 04103
PORTLAND, ME 04103
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1922955368, enumerated as an "individual" on March 13, 2026.
The provider is located at 716 STEVENS AVE PORTLAND, ME 04103 and the phone number is (207) 283-0171.
Dental Hygienist with taxonomy code 124Q00000X.
