SAN DIEGO INTERNAL HOSPITALIST INC
NPI 1386538478
Internal Medicine in El Cajon, CA

NPI Status: Active since June 04, 2025

Contact Information

3356 RANCHO DIEGO CIR
EL CAJON, CA
ZIP 92019
Phone: (619) 438-4117
Fax: (860) 325-4894

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  • Organization
  • Internal Medicine

About SAN DIEGO INTERNAL HOSPITALIST INC

This page provides the complete NPI Profile along with additional information for San Diego Internal Hospitalist Inc, an internist established in El Cajon, California operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1386538478 assigned on June 2025. The practitioner's primary taxonomy code is 207R00000X. 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 authorized official of this NPI record is Dr. Sinan Khayyat (Owner)

NPI
1386538478
Provider Name
SAN DIEGO INTERNAL HOSPITALIST INC
Entity Type
Organization
Location Address
3356 RANCHO DIEGO CIR EL CAJON, CA 92019
Location Phone
(619) 438-4117
Location Fax
(860) 325-4894
Mailing Address
3356 RANCHO DIEGO CIR EL CAJON, CA 92019
Mailing Phone
(619) 438-4117
Mailing Fax
(860) 325-4894
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
06-04-2025
Last Update Date
06-04-2025
Code Navigator

An internist like San Diego Internal Hospitalist Inc is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, 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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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

DR. SINAN KHAYYAT

Authorized Official Title
OWNER
Authorized Official Phone
(619) 438-4117

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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 1386538478, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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.

Pos 1
1
Doubled → 2
Pos 2
3
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
6
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
3
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
4
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
8
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 8 → 16 → 7 5 → 10 → 1 8 → 16 → 7 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 6 + 6 + 1 + 0 + 3 + 1 + 6 + 4 + 1 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1386538478.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Internal Medicine
3356 RANCHO DIEGO CIR
EL CAJON, CA 92019

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1386538478, enumerated as an "organization" on June 04, 2025.

The provider is located at 3356 RANCHO DIEGO CIR EL CAJON, CA 92019 and the phone number is (619) 438-4117.

Internal Medicine with taxonomy code 207R00000X.