REX H. HOANG, DMD, PC
NPI 1720284375
Dentist in Washington, DC

NPI Status: Active since June 21, 2007

Contact Information

1325 18TH ST NW
SUITE #203
WASHINGTON, DC
ZIP 20036
Phone: (202) 833-8724
Fax: (202) 833-8725

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  • Organization
  • Dentist

About REX H. HOANG, DMD, PC

This page provides the complete NPI Profile along with additional information for Rex H. Hoang, Dmd, Pc, a provider established in Washington, District Of Columbia operating as a Dentist. The healthcare provider is registered in the NPI registry with number 1720284375 assigned on June 2007. The practitioner's primary taxonomy code is 122300000X with license number DEN5295 (DC). 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. Rex Hiep Hoang Dmd (Ceo)

NPI
1720284375
Provider Name
REX H. HOANG, DMD, PC
Entity Type
Organization
Location Address
1325 18TH ST NW SUITE #203 WASHINGTON, DC 20036
Location Phone
(202) 833-8724
Location Fax
(202) 833-8725
Mailing Address
1325 18TH ST NW SUITE #203 WASHINGTON, DC 20036
Mailing Phone
(202) 833-8724
Mailing Fax
(202) 833-8725
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
06-21-2007
Last Update Date
08-27-2008
Code Navigator

A dentist like Rex H. Hoang, Dmd, Pc 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.

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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.
DEN5295
License State
DC
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. REX HIEP HOANG DMD

Authorized Official Title
CEO
Authorized Official Phone
(202) 833-8724

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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 1720284375, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 4 + 0 + 4 + 8 + 8 + 3 + 1 + 4 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1720284375.

Other Providers at the Same Location


The following 11 providers are registered at the same or a nearby location.

Dentist
1325 18TH ST NW, STE 201
WASHINGTON, DC 20036
Dentist
1325 18TH ST NW, SUITE 213
WASHINGTON, DC 20036
Psychiatry & Neurology (Psychiatry)
1325 18TH ST NW, #209
WASHINGTON, DC 20036
Dentist (General Practice)
1325 18TH ST NW, #102
WASHINGTON, DC 20036
Dentist (General Practice)
1325 18TH ST NW, SUITE # 206
WASHINGTON, DC 20036
Physical Therapist
1325 18TH ST NW, SUITE 106
WASHINGTON, DC 20036
Psychoanalyst
1325 18TH ST NW, SUITE 101
WASHINGTON, DC 20036
Psychologist (Clinical)
1325 18TH ST NW, 212
WASHINGTON, DC 20036
Psychologist (Clinical)
1325 18TH ST NW, # 205
WASHINGTON, DC 20036
Psychologist (Clinical)
1325 18TH ST NW, SUITE 209
WASHINGTON, DC 20036
Social Worker (Clinical)
1325 18TH ST NW, #603
WASHINGTON, DC 20036

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1720284375, enumerated as an "organization" on June 21, 2007.

The provider is located at 1325 18TH ST NW SUITE #203 WASHINGTON, DC 20036 and the phone number is (202) 833-8724.

Dentist with taxonomy code 122300000X.