DR. TIMOTHY JOSEPH O'LEARY MD, PHD
NPI 1003899873
Pathology - Anatomic Pathology in Chesapeake Beach, MD
NPI Status: Active since November 24, 2005
Contact Information
4755 CAMP ROOSEVELT DRIVE
CHESAPEAKE BEACH, MD
ZIP 20732
Phone: (240) 460-0271
- Individual
- Male
- Pathology
- Anatomic Pathology
About TIMOTHY O'LEARY
This page provides the complete NPI Profile along with additional information for Timothy O'leary, a provider established in Chesapeake Beach, Maryland with a medical specialization in Pathology, focusing in anatomic pathology . The healthcare provider is registered in the NPI registry with number 1003899873 assigned on November 2005. The practitioner's primary taxonomy code is 207ZP0101X with license number D25865 (MD). The provider is registered as an individual and his NPI record was last updated 7 years ago.
- NPI
- 1003899873
- Provider Name
- DR. TIMOTHY JOSEPH O'LEARY MD, PHD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 4755 CAMP ROOSEVELT DRIVE CHESAPEAKE BEACH, MD 20732
- Location Phone
- (240) 460-0271
- Mailing Address
- 4755 CAMP ROOSEVELT DRIVE CHESAPEAKE BEACH, MD 20732
- Mailing Phone
- (240) 460-0271
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 11-24-2005
- Last Update Date
- 08-05-2019
- 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
Pathology Anatomic Pathology
- Taxonomy Code
- 207ZP0101X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- D25865
- License State
- MD
- Taxonomy Description
- A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
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 | 207ZP0007X | Allopathic & Osteopathic Physicians | Pathology | D0025865 (MD) |
| 2 | 207ZP0101X | Allopathic & Osteopathic Physicians | Pathology | D0025865 (MD) |
| 3 | 208D00000X | Allopathic & Osteopathic Physicians | General Practice | D25865 (MD) |
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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 1003899873, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).
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 67 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1003899873, enumerated as an "individual" on November 24, 2005.
The provider is located at 4755 CAMP ROOSEVELT DRIVE CHESAPEAKE BEACH, MD 20732 and the phone number is (240) 460-0271.
Pathology with taxonomy code 207ZP0101X and a focus in Anatomic Pathology.
