MR. GREGORY J. CALLAHAN BOCO
NPI 1497944946
Technician, Other in Baltimore, MD
NPI Status: Active since October 22, 2007
Contact Information
3900 LOCH RAVEN BLVD
BALTIMORE, MD
ZIP 21218
Phone: (410) 605-7000
Fax: (410) 605-7677
- Individual
- Male
- Technician, Other
About GREGORY CALLAHAN
This page provides the complete NPI Profile along with additional information for Gregory Callahan, a provider established in Baltimore, Maryland with a medical specialization in Technician, Other. The healthcare provider is registered in the NPI registry with number 1497944946 assigned on October 2007. The practitioner's primary taxonomy code is 247200000X with license number C21679 (MD). The provider is registered as an individual and his NPI record was last updated 19 years ago.
- NPI
- 1497944946
- Provider Name
- MR. GREGORY J. CALLAHAN BOCO
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 3900 LOCH RAVEN BLVD BALTIMORE, MD 21218
- Location Phone
- (410) 605-7000
- Location Fax
- (410) 605-7677
- Mailing Address
- 3900 LOCH RAVEN BLVD BALTIMORE, MD 21218
- Mailing Phone
- (410) 605-7000
- Mailing Fax
- (410) 605-7677
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-22-2007
- Last Update Date
- 10-22-2007
- 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
Technician, Other
- Taxonomy Code
- 247200000X
- Type
- Technologists, Technicians & Other Technical Service Providers
- License No.
- C21679
- License State
- MD
- Taxonomy Description
- A collective term for persons with specialized training in various narrow fields of expertise whose occupations require training and skills in specific technical processes and procedures; and where further classification is deemed unnecessary by the user.
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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 1497944946, we treat the final digit (6) 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 84. The final step is to find the difference between that total and the next multiple of ten (90 - 84 = 6).
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 84 is 90. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1497944946, enumerated as an "individual" on October 22, 2007.
The provider is located at 3900 LOCH RAVEN BLVD BALTIMORE, MD 21218 and the phone number is (410) 605-7000.
Technician, Other with taxonomy code 247200000X.
