DR. MICHAEL B LASH MD
NPI 1487606281
Otolaryngology in Sonoma, CA
NPI Status: Active since May 17, 2006
Contact Information
15000 ARNOLD DRIVE
SONOMA, CA
ZIP 95431
Phone: (707) 938-6556
- Individual
- Male
- Otolaryngology
About MICHAEL LASH
This page provides the complete NPI Profile along with additional information for Michael Lash, a provider established in Sonoma, California with a medical specialization in Otolaryngology. The healthcare provider is registered in the NPI registry with number 1487606281 assigned on May 2006. The practitioner's primary taxonomy code is 207Y00000X with license number A21710 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1487606281
- Provider Name
- DR. MICHAEL B LASH MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 15000 ARNOLD DRIVE SONOMA, CA 95431
- Location Phone
- (707) 938-6556
- Mailing Address
- 1600 9TH ST ROOM 205 MAILSTOP 2-3 SACRAMENTO, CA 95814
- Mailing Phone
- (916) 654-2431
- Mailing Fax
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-17-2006
- Last Update Date
- 09-11-2025
- Code Navigator
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
Otolaryngology
- Taxonomy Code
- 207Y00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A21710
- 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.
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 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | A21710 (CA) |
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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 1487606281, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).
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 59 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.
SONOMA, CA 95431
SONOMA, CA 95431
SONOMA, CA 95431
ELDRIDGE, CA 95431
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1487606281, enumerated as an "individual" on May 17, 2006.
The provider is located at 15000 ARNOLD DRIVE SONOMA, CA 95431 and the phone number is (707) 938-6556.
Otolaryngology with taxonomy code 207Y00000X.
