DR. MARK I LEVY MD
NPI 1689811739
Psychiatry & Neurology - Forensic Psychiatry in Mill Valley, CA

NPI Status: Active since January 12, 2009

Contact Information

655 REDWOOD HWY
SUITE 271
MILL VALLEY, CA
ZIP 94941
Phone: (415) 388-8040
Fax: (415) 634-2400

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  • Individual
  • Male
  • Psychiatry & Neurology
  • Forensic Psychiatry

About MARK LEVY

This page provides the complete NPI Profile along with additional information for Mark Levy, a provider established in Mill Valley, California with a medical specialization in Psychiatry & Neurology, focusing in forensic psychiatry . The healthcare provider is registered in the NPI registry with number 1689811739 assigned on January 2009. The practitioner's primary taxonomy code is 2084F0202X with license number G22658 (CA). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI
1689811739
Provider Name
DR. MARK I LEVY MD
Gender
Male
Entity Type
Individual
Location Address
655 REDWOOD HWY SUITE 271 MILL VALLEY, CA 94941
Location Phone
(415) 388-8040
Location Fax
(415) 634-2400
Mailing Address
655 REDWOOD HWY SUITE 271 MILL VALLEY, CA 94941
Mailing Phone
(415) 388-8040
Mailing Fax
(415) 634-2400
Is Sole Proprietor?
Yes
Enumeration Date
01-12-2009
Last Update Date
11-05-2015
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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.
G22658
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

MD-13059 (HI)
22084F0202XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Forensic Psychiatry

2014-02353 (NC)
32084P0800XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Psychiatry

G22658 (CA)
42084P0800XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Psychiatry

MD-13059 (HI)

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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 1689811739, 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 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
6
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
1
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
3
Doubled → 6
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 8 → 16 → 7 8 → 16 → 7 1 → 2 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 6 + 9 + 1 + 6 + 1 + 2 + 7 + 6 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1689811739.

Other Providers at the Same Location


The following 12 providers are registered at the same or a nearby location.

Psychologist (Clinical)
655 REDWOOD HWY, SUITE 119
MILL VALLEY, CA 94941
Internal Medicine
655 REDWOOD HWY, SUITE 200
MILL VALLEY, CA 94941
Neuromusculoskeletal Medicine & OMM
655 REDWOOD HWY, SUITE #160
MILL VALLEY, CA 94941
Family Medicine (Adult Medicine)
655 REDWOOD HWY, SUITE 375
MILL VALLEY, CA 94941
Internal Medicine
655 REDWOOD HWY, 200
MILL VALLEY, CA 94941
Family Medicine
655 REDWOOD HWY, SUITE 375
MILL VALLEY, CA 94941
Physical Therapist
655 REDWOOD HWY, SUITE 309
MILL VALLEY, CA 94941
Specialist
655 REDWOOD HWY, 200
MILL VALLEY, CA 94941
Clinic/Center (Primary Care)
655 REDWOOD HWY
MILL VALLEY, CA 94941
Psychiatry & Neurology (Psychiatry)
655 REDWOOD HWY, STE 332
MILL VALLEY, CA 94941
Psychologist (Clinical)
655 REDWOOD HWY, SUITE 330
MILL VALLEY, CA 94941
Physician Assistant (Medical)
655 REDWOOD HWY, STE 246
MILL VALLEY, CA 94941

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689811739, enumerated as an "individual" on January 12, 2009.

The provider is located at 655 REDWOOD HWY SUITE 271 MILL VALLEY, CA 94941 and the phone number is (415) 388-8040.

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