DR. MARSHA INA CHASKELSON PH.D.
NPI 1639293681
Psychologist in Lexington, MA
NPI Status: Active since March 16, 2007
Contact Information
76 BEDFORD ST
SUITE 26
LEXINGTON, MA
ZIP 02420
Phone: (781) 863-5599
Fax: (781) 863-2488
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Psychologist
About MARSHA CHASKELSON
This page provides the complete NPI Profile along with additional information for Marsha Chaskelson, a provider established in Lexington, Massachusetts with a medical specialization in Psychologist. The healthcare provider is registered in the NPI registry with number 1639293681 assigned on March 2007. The practitioner's primary taxonomy code is 103T00000X with license number 4208 (MA). The provider is registered as an individual and her NPI record was last updated September 2025.
- NPI
- 1639293681
- Provider Name
- DR. MARSHA INA CHASKELSON PH.D.
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 76 BEDFORD ST SUITE 26 LEXINGTON, MA 02420
- Location Phone
- (781) 863-5599
- Location Fax
- (781) 863-2488
- Mailing Address
- 76 BEDFORD ST SUITE 26 LEXINGTON, MA 02420
- Mailing Phone
- (781) 863-5599
- Mailing Fax
- (781) 863-2488
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-16-2007
- Last Update Date
- 09-11-2025
- Code Navigator
A psychologist like Marsha Chaskelson 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.
- 4208
- 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 | 103G00000X | Behavioral Health & Social Service Providers | Clinical Neuropsychologist | 4208 (MA) |
| 2 | 103TB0200X | Behavioral Health & Social Service Providers | Psychologist | 4208 (MA) |
| 3 | 103TC2200X | Behavioral Health & Social Service Providers | Psychologist | 4208 (MA) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| W10294 | OTHER (01) | MA | BLUE CROSS BLUE SHIELD MA |
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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 | 3 | 9 | 2 | 9 | 3 | 6 | 8 | 1 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 6 | 6 | 9 | 4 | 9 | 6 | 6 | 16 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 6 + 6 + 9 + 4 + 9 + 6 + 6 + 1 + 6 + 24 = 79 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 80 - 79 = 1 | 1 | ||||||||
The NPI number 1639293681 is valid because the calculated check digit 1 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 |
|---|---|---|---|
| 1639164627 | JONATHAN W REUSSER LICSW Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE 25 LEXINGTON, MA 02420 (781) 861-1879 |
| 1083604862 | MS. DEWIE WEINER SCHRIESHEIM MS Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE 19 LEXINGTON, MA 02420 (781) 861-7585 |
| 1972542769 | DR. JENNIFER SORIANO LEBOVIDGE PH.D. Individual | Psychologist (Clinical) | 76 BEDFORD ST SUITE 12 LEXINGTON, MA 02420 (781) 861-6655 |
| 1437186830 | MRS. RE BECCA LYNN KOSTERMAN LICSW Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE #19 LEXINGTON, MA 02420 (617) 894-5910 |
| 1306878293 | DR. JANICE R. LEVINE PH.D. Individual | Psychologist | 76 BEDFORD ST #19 LEXINGTON, MA 02420 (781) 863-5600 |
| 1093804502 | MS. MIRIAM E. ADAMS LICSW Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE 26 LEXINGTON, MA 02420 (781) 274-6777 |
| 1063592681 | DR. BARRY STEVEN ELKIN PH.D Individual | Psychologist | 76 BEDFORD ST SUITE 26 LEXINGTON, MA 02420 (781) 861-1033 |
| 1356422331 | MS. WENDY C GABRENYA LICSW Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE 26 LEXINGTON, MA 02420 (781) 861-0081 |
| 1619046588 | DR. SIMONA GRABEL PH.D. Individual | Psychologist | 76 BEDFORD ST SUITE 10 LEXINGTON, MA 02420 (781) 863-0310 |
| 1962573642 | MRS. ELEANOR GARDNER ELKIN LICSW Individual | Counselor (Mental Health) | 76 BEDFORD ST SUITE 26 LEXINGTON, MA 02420 (781) 861-1033 |
| 1144379637 | MS. ALLISON PAIGE KROEGER LICSW Individual | Counselor (Mental Health) | 76 BEDFORD ST SUITE 10 LEXINGTON, MA 02420 (781) 257-5027 |
| 1558412031 | DR. DONNA M. SALUSTI PSY.D. Individual | Psychologist | 76 BEDFORD ST SUITE 35 LEXINGTON, MA 02420 (781) 860-5101 |
| 1013198852 | DONNA M DARCY LICSW Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE 22 LEXINGTON, MA 02420 (781) 697-1934 |
| 1285817767 | PAUL F. DIMATTIA DDS Organization | Dentist (General Practice) | 76 BEDFORD ST CUSTANCE PLACE, UNIT 8 LEXINGTON, MA 02420 (781) 862-0665 |
| 1659516755 | CHRISTINE KATHERINE SORRENTI LICSW Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE 22 LEXINGTON, MA 02420 (617) 981-9755 |
| 1922245752 | CHILD DEVELOPMENT NETWORK LLC Organization | Dietitian, Registered | 76 BEDFORD ST SUITE 12 LEXINGTON, MA 02420 (781) 861-6655 |
| 1275760118 | DR. JENNIFER COON-WALLMAN PSY.D. Individual | Psychologist (Clinical) | 76 BEDFORD ST SUITE 10 LEXINGTON, MA 02420 (781) 869-1350 |
| 1457686479 | MARGARET MARY MANNING PHD Individual | Psychologist (Clinical Child & Adolescent) | 76 BEDFORD ST SUITE 12 LEXINGTON, MA 02420 (781) 861-6655 |
| 1720318389 | HEAR MORE ASSOCIATES Organization | Hearing Aid Equipment | 76 BEDFORD ST LEXINGTON, MA 02420 (781) 863-8282 |
| 1902175169 | MRS. LOUISE A. GOODMAN LICSW Individual | Social Worker (Clinical) | 76 BEDFORD ST SUITE 21 LEXINGTON, MA 02420 (339) 234-3171 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1639293681, enumerated in the NPI registry as an "individual" on March 16, 2007
The provider is located at 76 Bedford St Suite 26 Lexington, Ma 02420 and the phone number is (781) 863-5599
The provider's speciality is Psychologist with taxonomy code 103T00000X
The provider might be accepting Accepts: Blue Cross Blue Shield, Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
This NPI record was last updated on March 16, 2007. 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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