MATTHEW COLBURN MONTGOMERY M.D.
NPI 1538435771
Psychiatry & Neurology - Psychiatry in Beverly Hills, CA

NPI Status: Active since March 30, 2012

Contact Information

9440 SANTA MONICA BLVD STE 301
BEVERLY HILLS, CA
ZIP 90210
Phone: (719) 439-4116

NPI Profile Information
Primary Taxonomy
Secondary Locations
Medicare Participation & PECOS Status
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Psychiatry & Neurology
Psychiatry
Opted-Out Medicare

About MATTHEW MONTGOMERY

This page provides the complete NPI Profile along with additional information for Matthew Montgomery, a provider established in Beverly Hills, California with a medical specialization in Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1538435771 assigned on March 2012. The practitioner's primary taxonomy code is 2084P0800X with license number C175020 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1538435771
Provider Name: MATTHEW COLBURN MONTGOMERY M.D.
Other Name: MATTHEW COLBURN
Other Name Type: Former Name (1)
Gender: Male
Entity Type: Individual
Location Address: 9440 SANTA MONICA BLVD STE 301 BEVERLY HILLS, CA 90210
Location Phone: (719) 439-4116
Mailing Address: 9440 SANTA MONICA BLVD STE 301 BEVERLY HILLS, CA 90210
Mailing Phone: (719) 439-4116
Is Sole Proprietor?: Yes
Enumeration Date: 03-30-2012
Last Update Date: 05-12-2025
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A psychiatrist like Matthew Montgomery are primary mental health physicians diagnose and treat mental illnesses through psychotherapy, psychoanalysis, hospitalization and medication. Psychiatrist help patients find solutions through changes in their behavioral patterns, explorations of experiences, group and family therapy.

The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Matthew Montgomery opted out of Medicare effective on 11-22-2021 until 11-22-2025. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare and cannot order and refer services to other healthcare providers.

Location Map

Secondary Locations

7373 N Scottsdale Rd Ste C190
Scottsdale, AZ 85253
(480) 442-9599

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 Psychiatry
Taxonomy Code: 2084P0800X
Type: Allopathic & Osteopathic Physicians
License No.: C175020
License State: CA
Taxonomy Description: A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Medicare Participation & PECOS Enrollment Status

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.

Opted-Out of Medicare? Yes
Opt-Out Effective Date: 11-22-2021
Opt-Out End Date: 11-22-2025
Eligible to Order and Refer? No

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 1538435771, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 6

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 14 → 1 + 4

Check

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 4 → 8 5 → 10 → 1 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 6 + 8 + 8 + 3 + 1 + 0 + 7 + 1 + 4 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1538435771.