DR. DONALD RUSSELL MERRYFIELD DDS
NPI 1689879603
Dentist - Orthodontics and Dentofacial Orthopedics in Washington, DC
NPI Status: Active since June 19, 2007
Contact Information
1160 VARNUM ST NE
#006 DE PAUL BLDG PROVIDENCE HOSPITAL
WASHINGTON, DC
ZIP 20017
Phone: (202) 269-7103
Fax: (202) 269-7100
- Individual
- Male
- Dentist
- Orthodontics and Dentofacial Orthopedics
About DONALD MERRYFIELD
This page provides the complete NPI Profile along with additional information for Donald Merryfield, a provider established in Washington, District Of Columbia with a medical specialization in Dentist, focusing in orthodontics and dentofacial orthopedics . The healthcare provider is registered in the NPI registry with number 1689879603 assigned on June 2007. The practitioner's primary taxonomy code is 1223X0400X with license number DEN2274 (DC). The provider is registered as an individual and his NPI record was last updated 19 years ago.
- NPI
- 1689879603
- Provider Name
- DR. DONALD RUSSELL MERRYFIELD DDS
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1160 VARNUM ST NE #006 DE PAUL BLDG PROVIDENCE HOSPITAL WASHINGTON, DC 20017
- Location Phone
- (202) 269-7103
- Location Fax
- (202) 269-7100
- Mailing Address
- 10545 TODDS CORNER RD EASTON, MD 21601
- Mailing Phone
- (410) 763-8432
- Mailing Fax
- (202) 269-7100
- Is Sole Proprietor?
- No
- Enumeration Date
- 06-19-2007
- Last Update Date
- 07-08-2007
- Code Navigator
A dentist like Donald Merryfield is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.
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
Dentist Orthodontics and Dentofacial Orthopedics
- Taxonomy Code
- 1223X0400X
- Type
- Dental Providers
- License No.
- DEN2274
- License State
- DC
- Taxonomy Description
- That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 1223X0400X | Dental Providers | Dentist | 4423 (MD) |
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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 1689879603, we treat the final digit (3) 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 3).
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 77 is 80. 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.
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
WASHINGTON, DC 20017
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1689879603, enumerated as an "individual" on June 19, 2007.
The provider is located at 1160 VARNUM ST NE #006 DE PAUL BLDG PROVIDENCE HOSPITAL WASHINGTON, DC 20017 and the phone number is (202) 269-7103.
Dentist with taxonomy code 1223X0400X and a focus in Orthodontics and Dentofacial Orthopedics.
