ALEXANDER SOMERS DO
NPI 1306425582
Internal Medicine - Pulmonary Disease in Tucson, AZ
NPI Status: Active since April 06, 2021
Contact Information
1501 N CAMPBELL AVE
TUCSON, AZ
ZIP 85724
Phone: (520) 694-8888
Fax: (520) 694-2353
NPPES record last updated: July 2, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.
Record update history: Jul 2, 2025, May 13, 2025, Apr 19, 2022 and 1 more (4 updates tracked since 2021).
- Individual
- Male
- Internal Medicine
- Pulmonary Disease
About ALEXANDER SOMERS
This page provides the complete NPI Profile along with additional information for Alexander Somers, an internist established in Tucson, Arizona with a medical specialization in Internal Medicine, focusing in pulmonary disease . The healthcare provider is registered in the NPI registry with number 1306425582 assigned on April 2021. The practitioner's primary taxonomy code is 207RP1001X with license number R3771 (AZ). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1306425582
- Provider Name
- ALEXANDER SOMERS DO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1501 N CAMPBELL AVE TUCSON, AZ 85724
- Location Phone
- (520) 694-8888
- Location Fax
- (520) 694-2353
- Mailing Address
- 1501 N CAMPBELL AVE TUCSON, AZ 85724
- Mailing Phone
- (520) 694-8888
- Mailing Fax
- (520) 694-2353
- Is Sole Proprietor?
- No
- Enumeration Date
- 04-06-2021
- Last Update Date
- 07-02-2025
- Code Navigator
An internist like Alexander Somers is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
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
Internal Medicine Pulmonary Disease
- Taxonomy Code
- 207RP1001X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- R3771
- License State
- AZ
- Taxonomy Description
- An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
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) |
|---|---|---|---|---|
| 1 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | 5151015032 (MI) |
| 2 | 207RC0200X | Allopathic & Osteopathic Physicians | Internal Medicine | R3771 (AZ) |
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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 1306425582, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 58 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
TUCSON, AZ 85724
TUCSON, AZ 85724
TUCSON, AZ 85724
TUCSON, AZ 85724
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1306425582, enumerated as an "individual" on April 06, 2021.
The provider is located at 1501 N CAMPBELL AVE TUCSON, AZ 85724 and the phone number is (520) 694-8888.
Internal Medicine with taxonomy code 207RP1001X and a focus in Pulmonary Disease.
