THOMAS MARCHEVSKY
NPI 1619227006
Psychologist in Oakland, CA
NPI Status: Active since September 13, 2012
Contact Information
5332 COLLEGE AVE
STE. 100
OAKLAND, CA
ZIP 94618
Phone: (415) 413-0631
- Individual
- Male
- Psychologist
- PECOS Enrolled
About THOMAS MARCHEVSKY
This page provides the complete NPI Profile along with additional information for Thomas Marchevsky, a provider established in Oakland, California with a medical specialization in Psychologist. The healthcare provider is registered in the NPI registry with number 1619227006 assigned on September 2012. The practitioner's primary taxonomy code is 103T00000X with license number PSY26278 (CA). The provider is registered as an individual and his NPI record was last updated 11 years ago.
- NPI
- 1619227006
- Provider Name
- THOMAS MARCHEVSKY
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 5332 COLLEGE AVE STE. 100 OAKLAND, CA 94618
- Location Phone
- (415) 413-0631
- Mailing Address
- 5332 COLLEGE AVE STE 100 OAKLAND, CA 94618
- Mailing Phone
- (415) 413-0631
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 09-13-2012
- Last Update Date
- 03-24-2014
- Code Navigator
A psychologist like Thomas Marchevsky studies cognitive, emotional, social processes and behavior by observing, interpreting, and recording how people relate to one another and to their environments. Psychologists gather information and evaluate behavior through controlled laboratory experiments, psychoanalysis, psychotherapy or through personality, performance, aptitude, or intelligence tests, and use this information when testing theories in their research or when treating patients.
Location Map
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
Psychologist
- Taxonomy Code
- 103T00000X
- Type
- Behavioral Health & Social Service Providers
- License No.
- PSY26278
- License State
- CA
- Taxonomy Description
- A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
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) |
|---|---|---|---|---|
| 1 | 103TB0200X | Behavioral Health & Social Service Providers | Psychologist | PSY26278 (CA) |
| 2 | 103TC0700X | Behavioral Health & Social Service Providers | Psychologist | PSY26278 (CA) |
Medicare Participation & PECOS Enrollment Status
Thomas Marchevsky is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging and Durable Medical Equipment (DME).
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.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): No
Eligible to Order or Refer Power Mobility Devices: No
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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. | |||||||||
| 1 | 6 | 1 | 9 | 2 | 2 | 7 | 0 | 0 | 6 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 6 | 2 | 9 | 4 | 2 | 14 | 0 | 0 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 6 + 2 + 9 + 4 + 2 + 1 + 4 + 0 + 0 + 24 = 54 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 54 = 6 | 6 | ||||||||
The NPI number 1619227006 is valid because the calculated check digit 6 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following provider is registered at the same or nearby location.
MRS. LAUREN FIELD MA
Marriage & Family Therapist
5332 COLLEGE AVE
SUITE 100
OAKLAND, CA
ZIP 94618
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1619227006, enumerated in the NPI registry as an "individual" on September 13, 2012
The provider is located at 5332 College Ave Ste. 100 Oakland, Ca 94618 and the phone number is (415) 413-0631
The provider's speciality is Psychologist with taxonomy code 103T00000X
Yes, as of July 06, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging and Durable Medical Equipment (DME).
This NPI record was last updated on September 13, 2012. 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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