RITTENHOUSE MEDICAL ASSOCIATES, INC.
NPI 1073677118
Psychiatry & Neurology - Psychiatry in Norristown, PA

NPI Status: Active since December 21, 2006

Contact Information

1033 W GERMANTOWN PIKE
NORRISTOWN, PA
ZIP 19403
Phone: (610) 539-8500
Fax: (610) 631-1252

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NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

  • Organization
  • Psychiatry & Neurology
  • Psychiatry

About RITTENHOUSE MEDICAL ASSOCIATES, INC.

This page provides the complete NPI Profile along with additional information for Rittenhouse Medical Associates, Inc., a provider established in Norristown, Pennsylvania operating as a Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1073677118 assigned on December 2006. The practitioner's primary taxonomy code is 2084P0800X. The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Mr. Gregg Y Slocum (Treasurer)

NPI
1073677118
Provider Name
RITTENHOUSE MEDICAL ASSOCIATES, INC.
Entity Type
Organization
Location Address
1033 W GERMANTOWN PIKE NORRISTOWN, PA 19403
Location Phone
(610) 539-8500
Location Fax
(610) 631-1252
Mailing Address
1033 W GERMANTOWN PIKE NORRISTOWN, PA 19403
Mailing Phone
(610) 539-8500
Mailing Fax
(610) 631-1252
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
12-21-2006
Last Update Date
09-11-2025
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A psychiatrist like Rittenhouse Medical Associates, Inc. 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
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.

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)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

 

Group Taxonomy 193400000X MULTIPLE SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

MR. GREGG Y SLOCUM

Authorized Official Title
TREASURER
Authorized Official Phone
(610) 539-8500

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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 1073677118, we treat the final digit (8) 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 8).

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
0
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
3
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
7
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
1
Unchanged
Pos 9
1
Doubled → 2
Check
8
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 7 → 14 → 5 6 → 12 → 3 7 → 14 → 5 1 → 2

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 1 + 4 + 3 + 1 + 2 + 7 + 1 + 4 + 1 + 2 + 24 = 52

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

The next multiple of ten after 52 is 60. The difference is the calculated check digit.

60 - 52 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1073677118.

Other Providers at the Same Location


The following 11 providers are registered at the same or a nearby location.

General Acute Care Hospital
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Internal Medicine
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Internal Medicine
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Psychiatry & Neurology (Addiction Medicine)
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Internal Medicine
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Physician Assistant (Medical)
1033 W GERMANTOWN PIKE, VALLEY FORGE MEDICAL CENTER & HOSPITAL
NORRISTOWN, PA 19403
Family Medicine (Addiction Medicine)
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Nurse Practitioner (Primary Care)
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
General Acute Care Hospital
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Nurse Practitioner (Primary Care)
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403
Psychiatry & Neurology (Psychiatry)
1033 W GERMANTOWN PIKE
NORRISTOWN, PA 19403

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1073677118, enumerated as an "organization" on December 21, 2006.

The provider is located at 1033 W GERMANTOWN PIKE NORRISTOWN, PA 19403 and the phone number is (610) 539-8500.

Psychiatry & Neurology with taxonomy code 2084P0800X and a focus in Psychiatry.