WILLIAM JOHN MONTGOMERY MD
NPI 1033139266
Preventive Medicine - Occupational Medicine in Riverside, CA

NPI Status: Active since July 20, 2006

Contact Information

4300 CENTRAL AVE
RIVERSIDE, CA
ZIP 92506
Phone: (951) 222-2206
Fax: (951) 222-2106

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  • Individual
  • Male
  • Preventive Medicine
  • Occupational Medicine

About WILLIAM MONTGOMERY

This page provides the complete NPI Profile along with additional information for William Montgomery, a provider established in Riverside, California with a medical specialization in Preventive Medicine, focusing in occupational medicine . The healthcare provider is registered in the NPI registry with number 1033139266 assigned on July 2006. The practitioner's primary taxonomy code is 2083X0100X with license number G72529 (CA). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI
1033139266
Provider Name
WILLIAM JOHN MONTGOMERY MD
Gender
Male
Entity Type
Individual
Location Address
4300 CENTRAL AVE RIVERSIDE, CA 92506
Location Phone
(951) 222-2206
Location Fax
(951) 222-2106
Mailing Address
4300 CENTRAL AVE RIVERSIDE, CA 92506
Mailing Phone
(951) 222-2206
Mailing Fax
(951) 222-2106
Is Sole Proprietor?
No
Enumeration Date
07-20-2006
Last Update Date
03-07-2022
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Location Map

Secondary Locations

  • 13800 Heacock St Ste C136
    Moreno Valley, CA 92553
    (951) 656-6009
  • 295 E Caroline St Ste D1
    San Bernardino, CA 92408
    (909) 723-1161
  • 59 S Milliken Ave Ste 100
    Ontario, CA 91761
    (909) 605-8888
  • 1690 W 6th St Ste K
    Corona, CA 92882
    (951) 736-9500
  • 18575 Gale Ave Ste 155
    City Of Industry, CA 91748
    (626) 581-8960

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

Preventive Medicine Occupational Medicine

Taxonomy Code
2083X0100X
Type
Allopathic & Osteopathic Physicians
License No.
G72529
License State
CA
Taxonomy Description
Occupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures. Practitioners in this field address the promotion of health in the work place, and the prevention and management of occupational and environmental injury, illness, and disability.

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)
1208D00000XAllopathic & Osteopathic Physicians

General Practice

G72529 (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 1033139266, 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 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
0
Unchanged
Pos 3
3
Doubled → 6
Pos 4
3
Unchanged
Pos 5
1
Doubled → 2
Pos 6
3
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
2
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 3 → 6 1 → 2 9 → 18 → 9 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 6 + 3 + 2 + 3 + 1 + 8 + 2 + 1 + 2 + 24 = 54

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

The next multiple of ten after 54 is 60. The difference is the calculated check digit.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1033139266.

Other Providers at the Same Location


The following 9 providers are registered at the same or a nearby location.

Physician Assistant
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Physical Therapist
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Physical Therapy Assistant
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Clinic/Center (Occupational Medicine)
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Physical Therapist
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Physical Therapy Assistant
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Physical Therapy Assistant
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Physical Therapy Assistant
4300 CENTRAL AVE
RIVERSIDE, CA 92506
Physician Assistant
4300 CENTRAL AVE
RIVERSIDE, CA 92506

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1033139266, enumerated as an "individual" on July 20, 2006.

The provider is located at 4300 CENTRAL AVE RIVERSIDE, CA 92506 and the phone number is (951) 222-2206.

Preventive Medicine with taxonomy code 2083X0100X and a focus in Occupational Medicine.