MICHAEL JOSEPH ARENSON ARNP
NPI 1255090478
Nurse Practitioner - Psychiatric/Mental Health in Gig Harbor, WA
NPI Status: Active since December 15, 2021
Contact Information
6625 WAGNER WAY STE 320
GIG HARBOR, WA
ZIP 98335
Phone: (253) 858-7056
Fax: (253) 858-8028
- Individual
- Male
- Nurse Practitioner
- Psychiatric/Mental Health
About MICHAEL ARENSON
This page provides the complete NPI Profile along with additional information for Michael Arenson, a provider established in Gig Harbor, Washington with a medical specialization in Nurse Practitioner, focusing in psychiatric/mental health . The healthcare provider is registered in the NPI registry with number 1255090478 assigned on December 2021. The practitioner's primary taxonomy code is 363LP0808X with license number ARNP.AP.70113556-NP (WA). The provider is registered as an individual and his NPI record was last updated April 2026.
- NPI
- 1255090478
- Provider Name
- MICHAEL JOSEPH ARENSON ARNP
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 6625 WAGNER WAY STE 320 GIG HARBOR, WA 98335
- Location Phone
- (253) 858-7056
- Location Fax
- (253) 858-8028
- Mailing Address
- 522 W RIVERSIDE AVE # 10057 SPOKANE, WA 99201
- Mailing Phone
- (253) 439-8267
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-15-2021
- Last Update Date
- 04-07-2026
- Code Navigator
A nurse practitioner (NP) like Michael Arenson is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, etc.
Location Map
Secondary Locations
- 15413 1st Avenue Ct S Ste 1A
Tacoma, WA 98444
(360) 539-8899
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
Nurse Practitioner Psychiatric/Mental Health
- Taxonomy Code
- 363LP0808X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- ARNP.AP.70113556-NP
- License State
- WA
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 | 163W00000X | Nursing Service Providers | Registered Nurse | 61039456 (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 1255090478, we treat the final digit (8) 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 8).
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 52 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 9 providers are registered at the same or a nearby location.
GIG HARBOR, WA 98335
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1255090478, enumerated as an "individual" on December 15, 2021.
The provider is located at 6625 WAGNER WAY STE 320 GIG HARBOR, WA 98335 and the phone number is (253) 858-7056.
Nurse Practitioner with taxonomy code 363LP0808X and a focus in Psychiatric/Mental Health.
