DAVID YECHEZKEL DRORY
NPI 1003444589
Internal Medicine - Hematology & Oncology in Rockville Centre, NY
NPI Status: Active since March 30, 2020
Contact Information
50 N PARK AVE
ROCKVILLE CENTRE, NY
ZIP 11570
Phone: (631) 751-3000
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.
Record update history: Jul 16, 2026, Mar 30, 2020 (2 updates tracked since 2020).
- Individual
- Male
- Internal Medicine
- Hematology & Oncology
About DAVID DRORY
This page provides the complete NPI Profile along with additional information for David Drory, an internist established in Rockville Centre, New York with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1003444589 assigned on March 2020. The practitioner's primary taxonomy code is 207RH0003X with license number 321061 (NY). The provider is registered as an individual and his NPI record was last updated July 2026.
- NPI
- 1003444589
- Provider Name
- DAVID YECHEZKEL DRORY
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 50 N PARK AVE ROCKVILLE CENTRE, NY 11570
- Location Phone
- (631) 751-3000
- Mailing Address
- 1 RESEARCH RD RIDGE, NY 11961
- Mailing Phone
- (631) 751-3000
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-30-2020
- Last Update Date
- 07-16-2026
- Code Navigator
An internist like David Drory is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
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
Internal Medicine Hematology & Oncology
- Taxonomy Code
- 207RH0003X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 321061
- License State
- NY
- Taxonomy Description
- An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
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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 1003444589, 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 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.
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 61 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1003444589, enumerated as an "individual" on March 30, 2020.
The provider is located at 50 N PARK AVE ROCKVILLE CENTRE, NY 11570 and the phone number is (631) 751-3000.
Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.
