DR. LARRY ROSS DEMAS M.D.
NPI 1215039235
Otolaryngology in Phoenix, AZ

NPI Status: Active since September 01, 2006

Contact Information

1111 E MCDOWELL RD
PHOENIX, AZ
ZIP 85006
Phone: (760) 485-5100

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  • Individual
  • Male
  • Otolaryngology

About LARRY DEMAS

This page provides the complete NPI Profile along with additional information for Larry Demas, a provider established in Phoenix, Arizona with a medical specialization in Otolaryngology. The healthcare provider is registered in the NPI registry with number 1215039235 assigned on September 2006. The practitioner's primary taxonomy code is 207Y00000X with license number MD16012 (OR). The provider is registered as an individual and his NPI record was last updated 16 years ago.

NPI
1215039235
Provider Name
DR. LARRY ROSS DEMAS M.D.
Gender
Male
Entity Type
Individual
Location Address
1111 E MCDOWELL RD PHOENIX, AZ 85006
Location Phone
(760) 485-5100
Mailing Address
80634 CAMINO SANTA ELISE INDIO, CA 92203
Mailing Phone
(760) 610-1121
Is Sole Proprietor?
Yes
Enumeration Date
09-01-2006
Last Update Date
01-27-2010
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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.
MD16012
License State
OR
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.

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)
1207Y00000XAllopathic & Osteopathic Physicians

Otolaryngology

MD00034650 (WA)

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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 1215039235, 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 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
2
Unchanged
Pos 3
1
Doubled → 2
Pos 4
5
Unchanged
Pos 5
0
Doubled → 0
Pos 6
3
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
2
Unchanged
Pos 9
3
Doubled → 6
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 1 → 2 0 → 0 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 2 + 5 + 0 + 3 + 1 + 8 + 2 + 6 + 24 = 55

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

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1215039235.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Emergency Medicine
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Radiology (Diagnostic Radiology)
1111 E MCDOWELL RD, DEPARTMENT OF MEDICAL IMAGING, GOOD SAMARITAN HOSPITAL
PHOENIX, AZ 85006
Radiology (Diagnostic Radiology)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Pediatrics (Pediatric Infectious Diseases)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Physician Assistant (Medical)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Internal Medicine (Critical Care Medicine)
1111 E MCDOWELL RD, DEPT OF CRITICAL CARE - BANNER GOOD SAMARITAN
PHOENIX, AZ 85006
Internal Medicine (Critical Care Medicine)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Internal Medicine (Critical Care Medicine)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Dietitian, Registered
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Internal Medicine
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Internal Medicine
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Nurse Practitioner
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Pediatrics (Neonatal-Perinatal Medicine)
1111 E MCDOWELL RD, GOOD SAMARITAN HOSPITAL, NICU
PHOENIX, AZ 85006
Internal Medicine
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Radiology (Radiation Oncology)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Radiology (Diagnostic Radiology)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Radiology (Diagnostic Radiology)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Nuclear Medicine
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
1111 E MCDOWELL RD
PHOENIX, AZ 85006
Radiology (Diagnostic Radiology)
1111 E MCDOWELL RD
PHOENIX, AZ 85006

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1215039235, enumerated as an "individual" on September 01, 2006.

The provider is located at 1111 E MCDOWELL RD PHOENIX, AZ 85006 and the phone number is (760) 485-5100.

Otolaryngology with taxonomy code 207Y00000X.