DR. GREGORY BRUCE LEONG M.D.
NPI 1174592158
Psychiatry & Neurology - Forensic Psychiatry in Patton, CA

NPI Status: Active since March 14, 2006

Contact Information

3102 E HIGHLAND AVE
PATTON, CA
ZIP 92369
Phone: (909) 425-6509

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  • Individual
  • Male
  • Psychiatry & Neurology
  • Forensic Psychiatry
  • PECOS Enrolled

About GREGORY LEONG

This page provides the complete NPI Profile along with additional information for Gregory Leong, a provider established in Patton, California with a medical specialization in Psychiatry & Neurology, focusing in forensic psychiatry . The healthcare provider is registered in the NPI registry with number 1174592158 assigned on March 2006. The practitioner's primary taxonomy code is 2084F0202X with license number G34482 (CA). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI
1174592158
Provider Name
DR. GREGORY BRUCE LEONG M.D.
Gender
Male
Entity Type
Individual
Location Address
3102 E HIGHLAND AVE PATTON, CA 92369
Location Phone
(909) 425-6509
Mailing Address
3102 E HIGHLAND AVE PATTON, CA 92369
Mailing Phone
(909) 425-6509
Is Sole Proprietor?
Yes
Enumeration Date
03-14-2006
Last Update Date
07-05-2012
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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

Psychiatry & Neurology Forensic Psychiatry

Taxonomy Code
2084F0202X
Type
Allopathic & Osteopathic Physicians
License No.
G34482
License State
CA
Taxonomy Description
Forensic Psychiatry is a subspecialty with psychiatric focus on interrelationships with civil, criminal and administrative law, evaluation and specialized treatment of individuals involved with the legal system, incarcerated in jails, prisons, and forensic psychiatry hospitals.

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)
12084F0202XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Forensic Psychiatry

MD00025101 (WA)
22084P0800XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Psychiatry

MD00025101 (WA)
32084P0800XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Psychiatry

G34482 (CA)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
AB05510MEDICARE PIN (08)WA 
G77741MEDICARE UPIN (02)WA 

Medicare Participation & PECOS Enrollment Status

Gregory Leong is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Durable Medical Equipment (DME) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: No

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): No

  • Eligible to Order or Refer Power Mobility Devices: Yes

Reviews for DR. GREGORY BRUCE LEONG M.D.

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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 1174592158, 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 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
1
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
4
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
9
Unchanged
Pos 7
2
Doubled → 4
Pos 8
1
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
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 7 → 14 → 5 5 → 10 → 1 2 → 4 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 4 + 4 + 1 + 0 + 9 + 4 + 1 + 1 + 0 + 24 = 52

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

The next multiple of ten after 52 is 60. The difference is the calculated check digit.

60 - 52 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1174592158.

Other Providers at the Same Location


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

Psychologist
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychologist
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychiatry & Neurology (Psychiatry)
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychologist
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychologist (Clinical)
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychiatry & Neurology (Psychiatry)
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychiatry & Neurology (Psychiatry)
3102 E HIGHLAND AVE
PATTON, CA 92369
Social Worker (Clinical)
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychologist
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychologist
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychologist (Clinical)
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychiatric Hospital
3102 E HIGHLAND AVE, PROGRAM 4, UNIT 35
PATTON, CA 92369
Psychologist (Clinical)
3102 E HIGHLAND AVE
PATTON, CA 92369
Dietitian, Registered
3102 E HIGHLAND AVE
PATTON, CA 92369
Clinical Neuropsychologist
3102 E HIGHLAND AVE
PATTON, CA 92369
Nurse Practitioner (Family)
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychiatry & Neurology (Psychiatry)
3102 E HIGHLAND AVE, MEDICAL STAFF OFFICE
PATTON, CA 92369
Psychologist (Clinical)
3102 E HIGHLAND AVE, MEDICAL STAFF OFFICE
PATTON, CA 92369
Occupational Therapist
3102 E HIGHLAND AVE
PATTON, CA 92369
Psychiatry & Neurology (Psychiatry)
3102 E HIGHLAND AVE, MEDICAL STAFF OFFICE
PATTON, CA 92369

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1174592158, enumerated as an "individual" on March 14, 2006.

The provider is located at 3102 E HIGHLAND AVE PATTON, CA 92369 and the phone number is (909) 425-6509.

Psychiatry & Neurology with taxonomy code 2084F0202X and a focus in Forensic Psychiatry.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.