WILLIAM J GEYER DDS, PA
NPI 1093924599
Dentist - General Practice in Lutz, FL

NPI Status: Active since May 21, 2007

Contact Information

148 WHITAKER RD
LUTZ, FL
ZIP 33549
Phone: (813) 949-3211
Fax: (813) 949-2714

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  • Organization
  • Dentist
  • General Practice

About WILLIAM J GEYER DDS, PA

This page provides the complete NPI Profile along with additional information for William J Geyer Dds, Pa, a provider established in Lutz, Florida operating as a Dentist, focusing in general practice . The healthcare provider is registered in the NPI registry with number 1093924599 assigned on May 2007. The practitioner's primary taxonomy code is 1223G0001X with license number DN9104 (FL). The provider is registered as an organization and their NPI record was last updated 14 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. William James Geyer D.d.s. (President)

NPI
1093924599
Provider Name
WILLIAM J GEYER DDS, PA
Entity Type
Organization
Location Address
148 WHITAKER RD LUTZ, FL 33549
Location Phone
(813) 949-3211
Location Fax
(813) 949-2714
Mailing Address
148 WHITAKER RD LUTZ, FL 33549
Mailing Phone
(813) 949-3211
Mailing Fax
(813) 949-2714
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-21-2007
Last Update Date
12-10-2012
Code Navigator

A dentist like William J Geyer 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 General Practice

Taxonomy Code
1223G0001X
Type
Dental Providers
License No.
DN9104
License State
FL
Taxonomy Description
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

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. WILLIAM JAMES GEYER D.D.S.

Authorized Official Title
PRESIDENT
Authorized Official Phone
(813) 949-3211

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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 1093924599, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

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
0
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
3
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
2
Unchanged
Pos 7
4
Doubled → 8
Pos 8
5
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
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 9 → 18 → 9 9 → 18 → 9 4 → 8 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 8 + 3 + 1 + 8 + 2 + 8 + 5 + 1 + 8 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1093924599.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Dentist (General Practice)
148 WHITAKER RD
LUTZ, FL 33549
Dentist (General Practice)
148 WHITAKER RD
LUTZ, FL 33549
Dentist
148 WHITAKER RD
LUTZ, FL 33549
Dentist (General Practice)
148 WHITAKER RD
LUTZ, FL 33549

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1093924599, enumerated as an "organization" on May 21, 2007.

The provider is located at 148 WHITAKER RD LUTZ, FL 33549 and the phone number is (813) 949-3211.

Dentist with taxonomy code 1223G0001X and a focus in General Practice.