DOCTORS OFFICE & WALK IN CLINIC CA INC
NPI 1922494681
General Practice in San Diego, CA

NPI Status: Active since April 09, 2015

Contact Information

3863 CLAIREMONT DR
SAN DIEGO, CA
ZIP 92117
Phone: (858) 483-5570
Fax: (858) 483-5572

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  • Organization
  • General Practice
  • CLIA Number: 05D0891063
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 08-29-2026

About DOCTORS OFFICE & WALK IN CLINIC CA INC

This page provides the complete NPI Profile along with additional information for Doctors Office & Walk In Clinic Ca Inc, a primary care provider established in San Diego, California operating as a General Practice. The healthcare provider is registered in the NPI registry with number 1922494681 assigned on April 2015. The practitioner's primary taxonomy code is 208D00000X with license number A39662 (CA). The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The provider's . The authorized official of this NPI record is Joshan K Shajan Md (Owner)

NPI
1922494681
Provider Legal Name
DOCTORS OFFICE & WALK IN CLINIC CA INC
Other Organization Name
Other Name Type
(6)
Entity Type
Organization
Location Address
3863 CLAIREMONT DR SAN DIEGO, CA 92117
Location Phone
(858) 483-5570
Location Fax
(858) 483-5572
Mailing Address
3863 CLAIREMONT DR SAN DIEGO, CA 92117
Mailing Phone
(858) 483-5570
Mailing Fax
(858) 483-5572
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-09-2015
Last Update Date
11-17-2025
Code Navigator

A primary care provider (PCP) like Doctors Office & Walk In Clinic Ca Inc 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 .

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

General Practice

Taxonomy Code
208D00000X
Type
Allopathic & Osteopathic Physicians
License No.
A39662
License State
CA
Taxonomy Description
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

JOSHAN K SHAJAN MD

Authorized Official Title
OWNER
Authorized Official Phone
(646) 652-1791

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
05D0891063
Facility Type
Physician Office
Certificate Effective Date
August 30, 2024
Certificate Expiration Date
August 29, 2026
Laboratory Director
JOSHAN SHAJAN
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Doctors Office & Walk In Clinic Ca Inc to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1922494681, we treat the final digit (1) 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 79. The final step is to find the difference between that total and the next multiple of ten (80 - 79 = 1).

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
2
Doubled → 4
Pos 4
2
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
4
Doubled → 8
Pos 8
6
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
1
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 2 → 4 4 → 8 4 → 8 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 4 + 2 + 8 + 9 + 8 + 6 + 1 + 6 + 24 = 79

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

The next multiple of ten after 79 is 80. The difference is the calculated check digit.

80 - 79 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1922494681.

Other Providers at the Same Location


The following 5 providers are registered at the same or a nearby location.

Skilled Nursing Facility
3863 CLAIREMONT DR
SAN DIEGO, CA 92117
Internal Medicine
3863 CLAIREMONT DR
SAN DIEGO, CA 92117
General Practice
3863 CLAIREMONT DR
SAN DIEGO, CA 92117
Physician Assistant
3863 CLAIREMONT DR
SAN DIEGO, CA 92117
Nurse Practitioner
3863 CLAIREMONT DR
SAN DIEGO, CA 92117

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1922494681, enumerated as an "organization" on April 09, 2015.

The provider is located at 3863 CLAIREMONT DR SAN DIEGO, CA 92117 and the phone number is (858) 483-5570.

General Practice with taxonomy code 208D00000X.