ETHAN GEOFFREY HARRIS M.D.
NPI 1124011689
Psychiatry & Neurology - Psychiatry in Vacaville, CA

NPI Status: Active since August 30, 2005

Contact Information

1119 E MONTE VISTA AVE
VACAVILLE, CA
ZIP 95688
Phone: (707) 469-4610

NPI Profile Information
Primary Taxonomy
Secondary Locations
Areas of Expertise
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Psychiatry & Neurology
Psychiatry

About ETHAN HARRIS

This page provides the complete NPI Profile along with additional information for Ethan Harris, a provider established in Vacaville, California with a medical specialization in Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1124011689 assigned on August 2005. The practitioner's primary taxonomy code is 2084P0800X with license number G18727 (CA). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI: 1124011689
Provider Name: ETHAN GEOFFREY HARRIS M.D.
Gender: Male
Entity Type: Individual
Location Address: 1119 E MONTE VISTA AVE VACAVILLE, CA 95688
Location Phone: (707) 469-4610
Mailing Address: PO BOX 999 13437 ANTELOPE TRAIL OREGON HOUSE, CA 95962
Mailing Phone: (530) 692-0802
Is Sole Proprietor?: Yes
Enumeration Date: 08-30-2005
Last Update Date: 10-07-2021
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A psychiatrist like Ethan Harris 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.

Location Map

Secondary Locations

720 Howe Ave Ste 110
Sacramento, CA 95825
(916) 923-0440

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.: G18727
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.

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient office or other outpatient visit, 20-29 minutes
Psychiatric diagnostic evaluation with medical services

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 1124011689, 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 4

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

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 2 → 4 0 → 0 1 → 2 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 4 + 4 + 0 + 1 + 2 + 6 + 1 + 6 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1124011689.