MARK LORRY GORDON M.D.
NPI 1306987946
Internal Medicine - Endocrinology, Diabetes & Metabolism in Encino, CA

NPI Status: Active since February 08, 2007

Contact Information

16661 VENTURA BLVD
SUITE 716
ENCINO, CA
ZIP 91436
Phone: (818) 990-1166

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  • Individual
  • Male
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism

About MARK GORDON

This page provides the complete NPI Profile along with additional information for Mark Gordon, an internist established in Encino, California with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1306987946 assigned on February 2007. The practitioner's primary taxonomy code is 207RE0101X with license number A41223 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1306987946
Provider Name
MARK LORRY GORDON M.D.
Gender
Male
Entity Type
Individual
Location Address
16661 VENTURA BLVD SUITE 716 ENCINO, CA 91436
Location Phone
(818) 990-1166
Mailing Address
16661 VENTURA BLVD SUITE 716 ENCINO, CA 91436
Mailing Phone
(818) 990-1166
Is Sole Proprietor?
Yes
Enumeration Date
02-08-2007
Last Update Date
09-11-2025
Code Navigator

An internist like Mark Gordon 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 Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License No.
A41223
License State
CA
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

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)
1207QG0300XAllopathic & Osteopathic Physicians

Family Medicine
Geriatric Medicine

A041223 (CA)

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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 1306987946, we treat the final digit (6) 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 6).

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
0
Doubled → 0
Pos 4
6
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
8
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
9
Unchanged
Pos 9
4
Doubled → 8
Check
6
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 0 → 0 9 → 18 → 9 7 → 14 → 5 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 0 + 6 + 1 + 8 + 8 + 1 + 4 + 9 + 8 + 24 = 74

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

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1306987946.

Other Providers at the Same Location


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

Pharmacist
16661 VENTURA BLVD, SUITE 111
ENCINO, CA 91436
Family Medicine
16661 VENTURA BLVD, SUITE #820
ENCINO, CA 91436
Clinic/Center (Sleep Disorder Diagnostic)
16661 VENTURA BLVD, #700
ENCINO, CA 91436
Surgery
16661 VENTURA BLVD, 313
ENCINO, CA 91436
Internal Medicine (Endocrinology, Diabetes & Metabolism)
16661 VENTURA BLVD, # 818
ENCINO, CA 91436
Podiatrist (Foot & Ankle Surgery)
16661 VENTURA BLVD, SUITE 705
ENCINO, CA 91436
Psychologist (Clinical)
16661 VENTURA BLVD, SUITE 603
ENCINO, CA 91436
Internal Medicine
16661 VENTURA BLVD, #310
ENCINO, CA 91436
Ophthalmology
16661 VENTURA BLVD, SUITE 522
ENCINO, CA 91436
Dentist
16661 VENTURA BLVD, #215
ENCINO, CA 91436
Acupuncturist
16661 VENTURA BLVD, 211
ENCINO, CA 91436
Ophthalmology
16661 VENTURA BLVD, SUITE 312
ENCINO, CA 91436
Psychologist (Clinical)
16661 VENTURA BLVD, STE.409
ENCINO, CA 91436
Chiropractor
16661 VENTURA BLVD, SUITE 403
ENCINO, CA 91436
Podiatrist (Foot & Ankle Surgery)
16661 VENTURA BLVD, SUITE 705
ENCINO, CA 91436
Oral & Maxillofacial Surgery
16661 VENTURA BLVD, SUITE # 215
ENCINO, CA 91436
Chiropractor
16661 VENTURA BLVD, SUITE 115
ENCINO, CA 91436
Dentist
16661 VENTURA BLVD, #401
ENCINO, CA 91436
Psychologist (Clinical)
16661 VENTURA BLVD, SUITE 520
ENCINO, CA 91436
Clinic/Center
16661 VENTURA BLVD, SUITE 115
ENCINO, CA 91436

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1306987946, enumerated as an "individual" on February 08, 2007.

The provider is located at 16661 VENTURA BLVD SUITE 716 ENCINO, CA 91436 and the phone number is (818) 990-1166.

Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.