DR. STEPHEN MARSHALL PHD
NPI 1235651290
Psychologist in Arlington, MA
NPI Status: Active since July 12, 2017
Contact Information
226 MASSACHUSETTS AVE STE 2A
ARLINGTON, MA
ZIP 02474
Phone: (617) 977-4770
- Individual
- Male
- Psychologist
- Opted-Out Medicare
About STEPHEN MARSHALL
This page provides the complete NPI Profile along with additional information for Stephen Marshall, a provider established in Arlington, Massachusetts with a medical specialization in Psychologist. The healthcare provider is registered in the NPI registry with number 1235651290 assigned on July 2017. The practitioner's primary taxonomy code is 103T00000X. The provider is registered as an individual and his NPI record was last updated 5 years ago.
- NPI
- 1235651290
- Provider Name
- DR. STEPHEN MARSHALL PHD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 226 MASSACHUSETTS AVE STE 2A ARLINGTON, MA 02474
- Location Phone
- (617) 977-4770
- Mailing Address
- P.O. BOX 1285 E. ARLINGTON, MA 02474
- Mailing Phone
- (617) 977-4770
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-12-2017
- Last Update Date
- 06-05-2021
- Code Navigator
A psychologist like Stephen Marshall 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.
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Stephen Marshall opted out of Medicare effective on 01-14-2024 until 01-14-2026. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare and cannot order and refer services to other healthcare providers.
Location Map
Secondary Locations
- 22 Mill St Ste 108
Arlington, MA 02476
(617) 855-3519
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 State
- MA
- 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 | |
| 2 | 103TC0700X | Behavioral Health & Social Service Providers | Psychologist | 11006 (MA) |
Medicare Participation & PECOS Enrollment Status
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.
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 01-14-2024
Opt-Out End Date: 01-14-2026
Eligible to Order and Refer? No
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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 1235651290, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 60 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 9 providers are registered at the same or a nearby location.
ARLINGTON, MA 02474
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1235651290, enumerated as an "individual" on July 12, 2017.
The provider is located at 226 MASSACHUSETTS AVE STE 2A ARLINGTON, MA 02474 and the phone number is (617) 977-4770.
Psychologist with taxonomy code 103T00000X.
