THOMAS K. RITCHER
NPI 1215431978
Psychiatry & Neurology - Psychiatry in San Diego, CA

NPI Status: Active since March 19, 2018

Contact Information

3853 ROSECRANS ST
SAN DIEGO, CA
ZIP 92110
Phone: (619) 692-8200

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  • Individual
  • Male
  • Psychiatry & Neurology
  • Psychiatry

About THOMAS RITCHER

This page provides the complete NPI Profile along with additional information for Thomas Ritcher, a provider established in San Diego, California with a medical specialization in Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1215431978 assigned on March 2018. The practitioner's primary taxonomy code is 2084P0800X with license number 20010 (CA). The provider is registered as an individual and his NPI record was last updated June 2025.

NPI
1215431978
Provider Name
THOMAS K. RITCHER
Gender
Male
Entity Type
Individual
Location Address
3853 ROSECRANS ST SAN DIEGO, CA 92110
Location Phone
(619) 692-8200
Mailing Address
3069 ALAMO DR # 1016 VACAVILLE, CA 95687
Is Sole Proprietor?
No
Enumeration Date
03-19-2018
Last Update Date
06-04-2025
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A psychiatrist like Thomas Ritcher 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.
20010
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.

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1215431978
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2225832914
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 2 + 2 + 5 + 8 + 3 + 2 + 9 + 1 + 4 + 24 = 62
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 62 = 88

The NPI number 1215431978 is valid because the calculated check digit 8 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


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

NPI Name / Type Taxonomy Address
1437246592SAN DIEGO CHOICES, INC
Organization
Community Based Residential Treatment Facility, Mental Illness3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225
1841376332 BRYNN L. ELLIS
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1023194412 JOHN BAIRD ARCHIBALD LVLN
Individual
Licensed Vocational Nurse3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225
1336226976 ABIGAIL ALABA CNA
Individual
Nurse's Aide3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1598842130 RENATO CAPISTRANO BALINO
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1306923958 MARK LUIS HOPKINS
Individual
Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1659458206 STEPHANIE L. BURTON LPT
Individual
Licensed Psychiatric Technician3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1386721017 DEANNA OSBAUGH LVN
Individual
Licensed Vocational Nurse3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8242
1831276575 KATHLYN ROSE AGUILUZ RN
Individual
Registered Nurse3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225
1770660425 ALBERT EVERETTE SCHAFER MSW
Individual
Social Worker3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8216
1659458305 TARA STEWART
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8215
1508943267 MARCIA C RHMMEL
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1548347347 ABDESSAMAD DANAMI
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1780761494 MICHELLE PATRICIA RUIZ
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225
1225115959 RUSSELL MILLER
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225
1790862324 CHRISTOPHER GLENN JAMES JR.
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8224
1437236080 LINDA ARCELIA MC DONALD RN
Individual
Registered Nurse3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225
1699852244 CRAIG GAMBLE LVN
Individual
Licensed Vocational Nurse3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225
1356428999 ALICIA LEYVA RN
Individual
Registered Nurse3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8232
1730266388 CECILIA KILGORE
Individual
Day Training/Habilitation Specialist3853 ROSECRANS ST
SAN DIEGO, CA 92110
(619) 692-8225

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1215431978, enumerated in the NPI registry as an "individual" on March 19, 2018

The provider is located at 3853 Rosecrans St San Diego, Ca 92110 and the phone number is (619) 692-8200

The provider's speciality is Psychiatry & Neurology with taxonomy code 2084P0800X with a focus in Psychiatry

This NPI record was last updated on March 19, 2018. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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