DR. RONALD EDWARD MERTENS MD
NPI 1104935014
Psychiatry & Neurology - Neurology in Portland, OR
NPI Status: Active since August 30, 2006
Contact Information
3550 N INTERSTATE AVE
PORTLAND, OR
ZIP 97227
Phone: (503) 285-9321
Fax: (503) 249-5528
- Individual
- Male
- Psychiatry & Neurology
- Neurology
About RONALD MERTENS
This page provides the complete NPI Profile along with additional information for Ronald Mertens, a provider established in Portland, Oregon with a medical specialization in Psychiatry & Neurology, focusing in neurology . The healthcare provider is registered in the NPI registry with number 1104935014 assigned on August 2006. The practitioner's primary taxonomy code is 2084N0400X with license number MD12580 (OR). The provider is registered as an individual and his NPI record was last updated 19 years ago.
- NPI
- 1104935014
- Provider Name
- DR. RONALD EDWARD MERTENS MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 3550 N INTERSTATE AVE PORTLAND, OR 97227
- Location Phone
- (503) 285-9321
- Location Fax
- (503) 249-5528
- Mailing Address
- 3339 SW CAROLINA ST PORTLAND, OR 97239
- Mailing Phone
- (503) 245-5060
- Is Sole Proprietor?
- No
- Enumeration Date
- 08-30-2006
- Last Update Date
- 07-08-2007
- 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
Psychiatry & Neurology Neurology
- Taxonomy Code
- 2084N0400X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- MD12580
- License State
- OR
- Taxonomy Description
- A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
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 | 2084N0400X | Allopathic & Osteopathic Physicians | Psychiatry & Neurology | MD00035084 (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 1104935014, 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 46. The final step is to find the difference between that total and the next multiple of ten (50 - 46 = 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.
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 46 is 50. 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.
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1104935014, enumerated as an "individual" on August 30, 2006.
The provider is located at 3550 N INTERSTATE AVE PORTLAND, OR 97227 and the phone number is (503) 285-9321.
Psychiatry & Neurology with taxonomy code 2084N0400X and a focus in Neurology.
