JOHNS HOPKINS UNIVERSITY
NPI 1508726324
Radiology - Radiation Oncology in Bethesda, MD
NPI Status: Active since November 13, 2025
Contact Information
6420 ROCKLEDGE DR STE 1200
BETHESDA, MD
ZIP 20817
Phone: (410) 502-8000
- Organization
- Radiology
- Radiation Oncology
About JOHNS HOPKINS UNIVERSITY
This page provides the complete NPI Profile along with additional information for Johns Hopkins University, a provider established in Bethesda, Maryland operating as a Radiology, focusing in radiation oncology . The healthcare provider is registered in the NPI registry with number 1508726324 assigned on November 2025. The practitioner's primary taxonomy code is 2085R0001X. The provider is registered as an organization and their NPI record was last updated one year ago. Johns Hopkins University operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Nicholas Giarratano (Director, Provider Enrollment)
- NPI
- 1508726324
- Provider Name
- JOHNS HOPKINS UNIVERSITY
- Entity Type
- Organization
- Location Address
- 6420 ROCKLEDGE DR STE 1200 BETHESDA, MD 20817
- Location Phone
- (410) 502-8000
- Mailing Address
- 6201 GREENLEIGH AVE MIDDLE RIVER, MD 21220
- Mailing Phone
- (410) 955-5000
- Mailing Fax
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 11-13-2025
- Last Update Date
- 11-13-2025
- 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
Radiology Radiation Oncology
- Taxonomy Code
- 2085R0001X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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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 1508726324, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).
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 56 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1508726324, enumerated as an "organization" on November 13, 2025.
The provider is located at 6420 ROCKLEDGE DR STE 1200 BETHESDA, MD 20817 and the phone number is (410) 502-8000.
Radiology with taxonomy code 2085R0001X and a focus in Radiation Oncology.
