E J HERTZFELD DDS PA
NPI 1689710931
Dentist in Wilmington, DE

NPI Status: Active since January 30, 2007

Contact Information

1900 WASHINGTON ST
WILMINGTON, DE
ZIP 19102
Phone: (302) 654-4484
Fax: (302) 654-2905

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  • Organization
  • Dentist

About E J HERTZFELD DDS PA

This page provides the complete NPI Profile along with additional information for E J Hertzfeld Dds Pa, a provider established in Wilmington, Delaware operating as a Dentist. The healthcare provider is registered in the NPI registry with number 1689710931 assigned on January 2007. The practitioner's primary taxonomy code is 122300000X with license number 788 (DE). The provider is registered as an organization and their NPI record was last updated 18 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Edward J Hertzfeld Dds (Pres)

NPI
1689710931
Provider Name
E J HERTZFELD DDS PA
Entity Type
Organization
Location Address
1900 WASHINGTON ST WILMINGTON, DE 19102
Location Phone
(302) 654-4484
Location Fax
(302) 654-2905
Mailing Address
1900 WASHINGTON ST WILMINGTON, DE 19102
Mailing Phone
(302) 654-4484
Mailing Fax
(302) 654-2905
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-30-2007
Last Update Date
07-16-2008
Code Navigator

A dentist like E J Hertzfeld Dds Pa 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

Taxonomy Code
122300000X
Type
Dental Providers
License No.
788
License State
DE
Taxonomy Description
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. EDWARD J HERTZFELD DDS

Authorized Official Title
PRES
Authorized Official Phone
(302) 654-4484

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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 1689710931, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
1
Unchanged
Pos 7
0
Doubled → 0
Pos 8
9
Unchanged
Pos 9
3
Doubled → 6
Check
1
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 8 → 16 → 7 7 → 14 → 5 0 → 0 3 → 6

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 1 + 6 + 9 + 1 + 4 + 1 + 0 + 9 + 6 + 24 = 69

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1689710931.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689710931, enumerated as an "organization" on January 30, 2007.

The provider is located at 1900 WASHINGTON ST WILMINGTON, DE 19102 and the phone number is (302) 654-4484.

Dentist with taxonomy code 122300000X.