DENNIS Y. FONG, M.D., PROFESSIONAL CORPORATION
NPI 1245336809
Family Medicine in Walnut Creek, CA

NPI Status: Active since September 14, 2006

Contact Information

108 LA CASA VIA
SUITE 104
WALNUT CREEK, CA
ZIP 94598
Phone: (925) 934-2333
Fax: (925) 934-2688

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  • Organization
  • Family Medicine

About DENNIS Y. FONG, M.D., PROFESSIONAL CORPORATION

This page provides the complete NPI Profile along with additional information for Dennis Y. Fong, M.d., Professional Corporation, a primary care provider established in Walnut Creek, California operating as a Family Medicine. The healthcare provider is registered in the NPI registry with number 1245336809 assigned on September 2006. The practitioner's primary taxonomy code is 207Q00000X. The provider is registered as an organization and their NPI record was last updated 6 years 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. Dennis Yunming Fong M.d. (Provider)

NPI
1245336809
Provider Name
DENNIS Y. FONG, M.D., PROFESSIONAL CORPORATION
Entity Type
Organization
Location Address
108 LA CASA VIA SUITE 104 WALNUT CREEK, CA 94598
Location Phone
(925) 934-2333
Location Fax
(925) 934-2688
Mailing Address
108 LA CASA VIA SUITE 104 WALNUT CREEK, CA 94598
Mailing Phone
(925) 934-2333
Mailing Fax
(925) 934-2688
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
09-14-2006
Last Update Date
11-20-2020
Code Navigator

A primary care provider (PCP) like Dennis Y. Fong, M.d., Professional Corporation 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

Family Medicine

Taxonomy Code
207Q00000X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

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)
1207Q00000XAllopathic & Osteopathic Physicians

Family Medicine

G83720 (CA)

Group Taxonomy 193400000X MULTIPLE 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. DENNIS YUNMING FONG M.D.

Authorized Official Title
PROVIDER
Authorized Official Phone
(925) 934-2333

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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 1245336809, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
2
Unchanged
Pos 3
4
Doubled → 8
Pos 4
5
Unchanged
Pos 5
3
Doubled → 6
Pos 6
3
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
8
Unchanged
Pos 9
0
Doubled → 0
Check
9
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 3 → 6 6 → 12 → 3 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 8 + 5 + 6 + 3 + 1 + 2 + 8 + 0 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1245336809.

Other Providers at the Same Location


The following 8 providers are registered at the same or a nearby location.

Clinic/Center (Sleep Disorder Diagnostic)
108 LA CASA VIA, SUITE 100
WALNUT CREEK, CA 94598
Clinic/Center (Dental)
108 LA CASA VIA, SUITE 102
WALNUT CREEK, CA 94598
Dentist
108 LA CASA VIA, SUITE #102
WALNUT CREEK, CA 94598
Clinic/Center (Rehabilitation, Substance Use Disorder)
108 LA CASA VIA
WALNUT CREEK, CA 94598
General Practice
108 LA CASA VIA, SUITE 106
WALNUT CREEK, CA 94598
Family Medicine
108 LA CASA VIA, SUITE 104
WALNUT CREEK, CA 94598
Clinical Medical Laboratory
108 LA CASA VIA, STE 105
WALNUT CREEK, CA 94598
Internal Medicine
108 LA CASA VIA, SUITE 100
WALNUT CREEK, CA 94598

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1245336809, enumerated as an "organization" on September 14, 2006.

The provider is located at 108 LA CASA VIA SUITE 104 WALNUT CREEK, CA 94598 and the phone number is (925) 934-2333.

Family Medicine with taxonomy code 207Q00000X.