MR. DENNIS WILLIAM MCCARTHY MA, LMHC
NPI 1215147145
Counselor - Mental Health in Seattle, WA
NPI Status: Active since May 22, 2007
Contact Information
1904 3RD AVE
STE 915
SEATTLE, WA
ZIP 98101
Phone: (206) 595-2659
- Individual
- Male
- Counselor
- Mental Health
- Accepts Insurance
- PECOS Enrolled
About DENNIS MCCARTHY
This page provides the complete NPI Profile along with additional information for Dennis Mccarthy, a provider established in Seattle, Washington with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1215147145 assigned on May 2007. The practitioner's primary taxonomy code is 101YM0800X with license number LH60086698 (WA). The provider is registered as an individual and his NPI record was last updated December 2025.
- NPI
- 1215147145
- Provider Name
- MR. DENNIS WILLIAM MCCARTHY MA, LMHC
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1904 3RD AVE STE 915 SEATTLE, WA 98101
- Location Phone
- (206) 595-2659
- Mailing Address
- 1904 3RD AVE STE 915 SEATTLE, WA 98101
- Mailing Phone
- (206) 595-2659
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-22-2007
- Last Update Date
- 12-26-2025
- Code Navigator
A mental health counselor like Dennis Mccarthy provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.
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
Counselor Mental Health
- Taxonomy Code
- 101YM0800X
- Type
- Behavioral Health & Social Service Providers
- License No.
- LH60086698
- License State
- WA
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Core Bronze HSA 10600 - EPO
- Core Bronze HSA 7500 - EPO
- Core Bronze HSA 8300 - EPO
- Core Gold 1500 - EPO
- Core Gold 3000 - EPO
- Core Silver 3500 - EPO
- Core Silver 4500 - EPO
- Core Silver 5000 - EPO
- Core Silver 7500 - EPO
- Core Standard Expanded Bronze HSA - EPO
- Core Standard Gold - EPO
- Core Standard Silver - EPO
- PacificSource Oregon Standard Bronze HSA Plan Core - EPO
- PacificSource Oregon Standard Gold Plan Core - EPO
- PacificSource Oregon Standard Silver Plan Core - EPO
- Premera Blue Cross Alaska One Gold - PPO
- Premera Blue Cross Preferred Bronze 5800 HSA - PPO
- Premera Blue Cross Preferred Bronze 6350 - PPO
- Premera Blue Cross Preferred Gold 1500 - PPO
- Premera Blue Cross Preferred Silver 4500 - PPO
- Premera Blue Cross Standard Bronze II - PPO
- Premera Blue Cross Standard Gold - PPO
- Premera Blue Cross Standard Silver - PPO
- Premera Blue Cross Family Dental - PPO
- Premera Blue Cross Pediatric Dental - PPO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Dennis Mccarthy is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging and Durable Medical Equipment (DME).
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): No
Eligible to Order or Refer Power Mobility Devices: No
Reviews for MR. DENNIS WILLIAM MCCARTHY MA, LMHC
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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 1215147145, we treat the final digit (5) 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).
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 55 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.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1215147145, enumerated as an "individual" on May 22, 2007.
The provider is located at 1904 3RD AVE STE 915 SEATTLE, WA 98101 and the phone number is (206) 595-2659.
Counselor with taxonomy code 101YM0800X and a focus in Mental Health.
The provider might be accepting Accepts: PacificSource Health Plans and Premera Blue Cross. Please consult your insurance carrier or call the provider to verify.
