SARAH HEMI RYU
NPI 1447837067
Psychiatry & Neurology - Psychiatry in Martinez, CA

NPI Status: Active since March 28, 2021

Contact Information

150 MUIR RD
MARTINEZ, CA
ZIP 94553
Phone: (925) 372-2000

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  • Individual
  • Female
  • Psychiatry & Neurology
  • Psychiatry

About SARAH RYU

This page provides the complete NPI Profile along with additional information for Sarah Ryu, a provider established in Martinez, California with a medical specialization in Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1447837067 assigned on March 2021. The practitioner's primary taxonomy code is 2084P0800X with license number 327270 (NY). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1447837067
Provider Name
SARAH HEMI RYU
Gender
Female
Entity Type
Individual
Location Address
150 MUIR RD MARTINEZ, CA 94553
Location Phone
(925) 372-2000
Mailing Address
150 MUIR RD MARTINEZ, CA 94553
Is Sole Proprietor?
No
Enumeration Date
03-28-2021
Last Update Date
09-25-2025
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A psychiatrist like Sarah Ryu 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.

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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 Psychiatry

Taxonomy Code
2084P0800X
Type
Allopathic & Osteopathic Physicians
License No.
327270
License State
NY
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.

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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 1447837067, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
4
Unchanged
Pos 3
4
Doubled → 8
Pos 4
7
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
3
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
0
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
7
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 8 → 16 → 7 7 → 14 → 5 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 8 + 7 + 1 + 6 + 3 + 1 + 4 + 0 + 1 + 2 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1447837067.

Other Providers at the Same Location


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

Psychiatry & Neurology (Psychiatry)
150 MUIR RD
MARTINEZ, CA 94553
Pathology (Anatomic Pathology & Clinical Pathology)
150 MUIR RD
MARTINEZ, CA 94553
Nurse Practitioner (Adult Health)
150 MUIR RD
MARTINEZ, CA 94553
Internal Medicine (Nephrology)
150 MUIR RD
MARTINEZ, CA 94553
Internal Medicine
150 MUIR RD
MARTINEZ, CA 94553
Specialist
150 MUIR RD, 112A
MARTINEZ, CA 94553
Specialist
150 MUIR RD, VANCSC - 127
MARTINEZ, CA 94553
Internal Medicine (Cardiovascular Disease)
150 MUIR RD
MARTINEZ, CA 94553
Radiology (Diagnostic Radiology)
150 MUIR RD, RADIOLOGY - 114A
MARTINEZ, CA 94553
Ophthalmology
150 MUIR RD, VETERANS AFFAIRS (112)
MARTINEZ, CA 94553
Internal Medicine
150 MUIR RD
MARTINEZ, CA 94553
Pharmacist (Pharmacotherapy)
150 MUIR RD, 119
MARTINEZ, CA 94553
Nurse Practitioner (Adult Health)
150 MUIR RD, VETERANS AFFAIRS
MARTINEZ, CA 94553
Anesthesiology (Pain Medicine)
150 MUIR RD, 112/A
MARTINEZ, CA 94553
Nurse Practitioner (Family)
150 MUIR RD
MARTINEZ, CA 94553
Internal Medicine (Endocrinology, Diabetes & Metabolism)
150 MUIR RD, VANCHCS MEDICAL SERVICE (612/111)
MARTINEZ, CA 94553
Nurse Practitioner (Family)
150 MUIR RD
MARTINEZ, CA 94553
Specialist
150 MUIR RD
MARTINEZ, CA 94553
Internal Medicine
150 MUIR RD
MARTINEZ, CA 94553
Physician Assistant (Medical)
150 MUIR RD, DEPT OF VETERANS AFFAIRS
MARTINEZ, CA 94553

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1447837067, enumerated as an "individual" on March 28, 2021.

The provider is located at 150 MUIR RD MARTINEZ, CA 94553 and the phone number is (925) 372-2000.

Psychiatry & Neurology with taxonomy code 2084P0800X and a focus in Psychiatry.