DR. JOHN R TESMAN M.D.
NPI 1356407340
Emergency Medicine in Ventura, CA
NPI Status: Active since December 28, 2006
Contact Information
2705 LOMA VISTA RD
SUITE 205
VENTURA, CA
ZIP 93003
Phone: (805) 585-3086
Fax: (805) 652-5474
NPPES record last updated: July 7, 2014. Verified against the NPPES registry weekly; last sync: July 12, 2026.
- Individual
- Male
- Emergency Medicine
About JOHN TESMAN
This page provides the complete NPI Profile along with additional information for John Tesman, a provider established in Ventura, California with a medical specialization in Emergency Medicine. The healthcare provider is registered in the NPI registry with number 1356407340 assigned on December 2006. The practitioner's primary taxonomy code is 207P00000X with license number G68726 (CA). The provider is registered as an individual and his NPI record was last updated 12 years ago.
- NPI
- 1356407340
- Provider Name
- DR. JOHN R TESMAN M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2705 LOMA VISTA RD SUITE 205 VENTURA, CA 93003
- Location Phone
- (805) 585-3086
- Location Fax
- (805) 652-5474
- Mailing Address
- PO BOX 1206 GOLETA, CA 93116
- Mailing Phone
- (805) 964-3838
- Mailing Fax
- (805) 683-3400
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-28-2006
- Last Update Date
- 07-07-2014
- 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
Emergency Medicine
- Taxonomy Code
- 207P00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- G68726
- License State
- CA
- Taxonomy Description
- An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| HG68726 | MEDICARE PIN (08) | CA |
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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 1356407340, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
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 60 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 11 providers are registered at the same or a nearby location.
VENTURA, CA 93003
VENTURA, CA 93003
VENTURA, CA 93003
VENTURA, CA 93003
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1356407340, enumerated as an "individual" on December 28, 2006.
The provider is located at 2705 LOMA VISTA RD SUITE 205 VENTURA, CA 93003 and the phone number is (805) 585-3086.
Emergency Medicine with taxonomy code 207P00000X.
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
