DR. MASSIMO DE MARCHIS PSY.D.
NPI 1942321989
Psychologist - Clinical in Dayton, OH

NPI Status: Active since April 03, 2007

Contact Information

732 BECKMAN ST
NOVA HOUSE ASSOCIATION INC.
DAYTON, OH
ZIP 45410
Phone: (937) 253-1680
Fax: (937) 253-8990

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  • Individual
  • Male
  • Psychologist
  • Clinical

About MASSIMO DE MARCHIS

This page provides the complete NPI Profile along with additional information for Massimo De Marchis, a provider established in Dayton, Ohio with a medical specialization in Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1942321989 assigned on April 2007. The practitioner's primary taxonomy code is 103TC0700X with license number 4045 (OH). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1942321989
Provider Name
DR. MASSIMO DE MARCHIS PSY.D.
Gender
Male
Entity Type
Individual
Location Address
732 BECKMAN ST NOVA HOUSE ASSOCIATION INC. DAYTON, OH 45410
Location Phone
(937) 253-1680
Location Fax
(937) 253-8990
Mailing Address
2536 ROANOKE AVE DAYTON, OH 45419
Mailing Phone
(937) 684-2123
Mailing Fax
(937) 253-8990
Is Sole Proprietor?
Yes
Enumeration Date
04-03-2007
Last Update Date
09-11-2025
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A clinical psychologist like Massimo De Marchis assesses, diagnoses, and treats mental, emotional, and behavioral disorders. Clinical psychologists help people deal with problems ranging from short-term personal issues to severe, chronic conditions. Clinical psychologists interview patients, give diagnostic tests, provide psychotherapy and design behavior modification programs to help patients.

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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

Psychologist Clinical

Taxonomy Code
103TC0700X
Type
Behavioral Health & Social Service Providers
License No.
4045
License State
OH
Taxonomy Description
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

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)
1103TA0400XBehavioral Health & Social Service Providers

Psychologist
Addiction (Substance Use Disorder)

 

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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 1942321989, 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 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
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
4
Doubled → 8
Pos 4
2
Unchanged
Pos 5
3
Doubled → 6
Pos 6
2
Unchanged
Pos 7
1
Doubled → 2
Pos 8
9
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
9
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 4 → 8 3 → 6 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 + 9 + 8 + 2 + 6 + 2 + 2 + 9 + 1 + 6 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1942321989.

Other Providers at the Same Location


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

Substance Abuse Rehabilitation Facility
732 BECKMAN ST
DAYTON, OH 45410
Social Worker (Clinical)
732 BECKMAN ST
DAYTON, OH 45410
Licensed Practical Nurse
732 BECKMAN ST
DAYTON, OH 45410
Counselor (Mental Health)
732 BECKMAN ST
DAYTON, OH 45410
Registered Nurse
732 BECKMAN ST
DAYTON, OH 45410
Technician, Other
732 BECKMAN ST
DAYTON, OH 45410
Behavior Technician
732 BECKMAN ST
DAYTON, OH 45410
Technician, Other
732 BECKMAN ST
DAYTON, OH 45410
Counselor (Addiction (Substance Use Disorder))
732 BECKMAN ST
DAYTON, OH 45410
Social Worker
732 BECKMAN ST
DAYTON, OH 45410
Behavior Technician
732 BECKMAN ST
DAYTON, OH 45410
Social Worker
732 BECKMAN ST
DAYTON, OH 45410
Registered Nurse (Addiction (Substance Use Disorder))
732 BECKMAN ST
DAYTON, OH 45410
Behavior Technician
732 BECKMAN ST
DAYTON, OH 45410
Behavior Technician
732 BECKMAN ST
DAYTON, OH 45410
Licensed Practical Nurse
732 BECKMAN ST
DAYTON, OH 45410
Behavior Technician
732 BECKMAN ST
DAYTON, OH 45410
Registered Nurse
732 BECKMAN ST
DAYTON, OH 45410
Behavior Technician
732 BECKMAN ST
DAYTON, OH 45410
Behavior Technician
732 BECKMAN ST
DAYTON, OH 45410

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1942321989, enumerated as an "individual" on April 03, 2007.

The provider is located at 732 BECKMAN ST NOVA HOUSE ASSOCIATION INC. DAYTON, OH 45410 and the phone number is (937) 253-1680.

Psychologist with taxonomy code 103TC0700X and a focus in Clinical.