CHARLES MARCUS
NPI 1497987648
Specialist in Ambler, PA
NPI Status: Active since August 20, 2009
Contact Information
858 E WELSH RD
AMBLER, PA
ZIP 19002
Phone: (215) 646-7879
Fax: (215) 646-7371
- Individual
- Male
- Specialist
About CHARLES MARCUS
This page provides the complete NPI Profile along with additional information for Charles Marcus, a provider established in Ambler, Pennsylvania with a medical specialization in Specialist. The healthcare provider is registered in the NPI registry with number 1497987648 assigned on August 2009. The practitioner's primary taxonomy code is 174400000X with license number F03207 (PA). The provider is registered as an individual and his NPI record was last updated May 2026.
- NPI
- 1497987648
- Provider Name
- CHARLES MARCUS
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 858 E WELSH RD AMBLER, PA 19002
- Location Phone
- (215) 646-7879
- Location Fax
- (215) 646-7371
- Mailing Address
- 858 E WELSH RD AMBLER, PA 19002
- Mailing Phone
- (215) 646-7879
- Mailing Fax
- (215) 646-7371
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 08-20-2009
- Last Update Date
- 05-03-2026
- Code Navigator
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
Specialist
- Taxonomy Code
- 174400000X
- Type
- Other Service Providers
- License No.
- F03207
- License State
- PA
- Taxonomy Description
- An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
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 | 237700000X | Speech, Language and Hearing Service Providers | Hearing Instrument Specialist | F03207 (PA) |
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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 1497987648, 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 82. The final step is to find the difference between that total and the next multiple of ten (90 - 82 = 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.
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 82 is 90. The difference is the calculated check digit.
Other Providers at the Same Location
The following 5 providers are registered at the same or a nearby location.
MAPLE GLEN, PA 19002
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1497987648, enumerated as an "individual" on August 20, 2009.
The provider is located at 858 E WELSH RD AMBLER, PA 19002 and the phone number is (215) 646-7879.
Specialist with taxonomy code 174400000X.
