RICARDO ENRIQUE CASTILLO II PA-S
NPI 1942147475
Student in an Organized Health Care Education/Training Program in Joint Base Lewis Mcchord, WA

NPI Status: Active since May 01, 2026

Contact Information

9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA
ZIP 98431
Phone: (919) 766-1594

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  • Individual
  • Male
  • Student in an Organized Health Care Educ...

About RICARDO CASTILLO

This page provides the complete NPI Profile along with additional information for Ricardo Castillo, a primary care provider established in Joint Base Lewis Mcchord, Washington with a medical specialization in Student In An Organized Health Care Education/training Program. The healthcare provider is registered in the NPI registry with number 1942147475 assigned on May 2026. The practitioner's primary taxonomy code is 390200000X. The provider is registered as an individual and his NPI record was last updated May 2026.

NPI
1942147475
Provider Name
RICARDO ENRIQUE CASTILLO II PA-S
Gender
Male
Entity Type
Individual
Location Address
9040A JACKSON AVE JOINT BASE LEWIS MCCHORD, WA 98431
Location Phone
(919) 766-1594
Mailing Address
9040A JACKSON AVE JOINT BASE LEWIS MCCHORD, WA 98431
Is Sole Proprietor?
No
Enumeration Date
05-01-2026
Last Update Date
05-01-2026
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A primary care provider (PCP) like Ricardo Castillo sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

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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

Student in an Organized Health Care Education/Training Program

Taxonomy Code
390200000X
Type
Student, Health Care
License State
WA
Taxonomy Description
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

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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 1942147475, 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 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.

Pos 1
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
4
Doubled → 8
Pos 4
2
Unchanged
Pos 5
1
Doubled → 2
Pos 6
4
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
4
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
5
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 4 → 8 1 → 2 7 → 14 → 5 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 9 + 8 + 2 + 2 + 4 + 1 + 4 + 4 + 1 + 4 + 24 = 65

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1942147475.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
9040A JACKSON AVE
TACOMA, WA 98431
Social Worker (Clinical)
9040A JACKSON AVE
TACOMA, WA 98431
Internal Medicine
9040A JACKSON AVE
TACOMA, WA 98431
Clinic/Center (Military/U.S. Coast Guard Outpatient)
9040A JACKSON AVE, ATTN: MCHJ-CSA-U
TACOMA, WA 98431
Registered Nurse
9040A JACKSON AVE, ATTN: MCHJ-CLQ-Q, CHRISTINA YOON RN
TACOMA, WA 98431
General Acute Care Hospital
9040A JACKSON AVE, ATT: MCHJ-C-E
TACOMA, WA 98431
Military Hospital (Military General Acute Care Hospital. Operational (Transportable))
9040A JACKSON AVE
TACOMA, WA 98431
Nutritionist
9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA 98431
Family Medicine
9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA 98431
Internal Medicine (Gastroenterology)
9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA 98431
Dietitian, Registered
9040A JACKSON AVE
TACOMA, WA 98431
Licensed Practical Nurse
9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA 98431
Family Medicine
9040A JACKSON AVE
TACOMA, WA 98431
Physical Therapist
9040A JACKSON AVE
JBLM, WA 98431
Chiropractor
9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA 98431
Nurse Practitioner
9040A JACKSON AVE
TACOMA, WA 98431
Dietitian, Registered
9040A JACKSON AVE
TACOMA, WA 98431
Pharmacist
9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA 98431
Pharmacist
9040A JACKSON AVE
JOINT BASE LEWIS MCCHORD, WA 98431
Internal Medicine
9040A JACKSON AVE
TACOMA, WA 98431

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1942147475, enumerated as an "individual" on May 01, 2026.

The provider is located at 9040A JACKSON AVE JOINT BASE LEWIS MCCHORD, WA 98431 and the phone number is (919) 766-1594.

Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.