DANIEL DEWERD MD
NPI 1447663794
Otolaryngology in San Diego, CA

NPI Status: Active since June 04, 2014

Contact Information

3627 RIVIERA DR
SAN DIEGO, CA
ZIP 92109
Phone: (858) 270-0239
Fax: (858) 270-0239

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  • Individual
  • Male
  • Otolaryngology

About DANIEL DEWERD

This page provides the complete NPI Profile along with additional information for Daniel Dewerd, a provider established in San Diego, California with a medical specialization in Otolaryngology. The healthcare provider is registered in the NPI registry with number 1447663794 assigned on June 2014. The practitioner's primary taxonomy code is 207Y00000X with license number CFE28735 (CA). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI
1447663794
Provider Name
DANIEL DEWERD MD
Gender
Male
Entity Type
Individual
Location Address
3627 RIVIERA DR SAN DIEGO, CA 92109
Location Phone
(858) 270-0239
Location Fax
(858) 270-0239
Mailing Address
3627 RIVIERA DR SAN DIEGO, CA 92109
Mailing Phone
(858) 270-0239
Mailing Fax
(858) 270-0239
Is Sole Proprietor?
Yes
Enumeration Date
06-04-2014
Last Update Date
06-04-2014
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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

Otolaryngology

Taxonomy Code
207Y00000X
Type
Allopathic & Osteopathic Physicians
License No.
CFE28735
License State
CA
Taxonomy Description
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

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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 1447663794, we treat the final digit (4) 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 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).

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
4
Unchanged
Pos 3
4
Doubled → 8
Pos 4
7
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
6
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
4
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 4 → 8 6 → 12 → 3 3 → 6 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 8 + 7 + 1 + 2 + 6 + 6 + 7 + 1 + 8 + 24 = 76

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

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1447663794.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1447663794, enumerated as an "individual" on June 04, 2014.

The provider is located at 3627 RIVIERA DR SAN DIEGO, CA 92109 and the phone number is (858) 270-0239.

Otolaryngology with taxonomy code 207Y00000X.