JOHN THOMAS NAWROCKI MD
NPI 1871121228
Internal Medicine - Hematology & Oncology in Lancaster, PA
NPI Status: Active since March 31, 2020
Contact Information
2102 HARRISBURG PIKE
LANCASTER, PA
ZIP 17601
Phone: (717) 544-9400
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Male
- Internal Medicine
- Hematology & Oncology
About JOHN NAWROCKI
This page provides the complete NPI Profile along with additional information for John Nawrocki, an internist established in Lancaster, Pennsylvania with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1871121228 assigned on March 2020. The practitioner's primary taxonomy code is 207RH0003X with license number 1871121228 (PA). The provider is registered as an individual and his NPI record was last updated June 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.
- NPI
- 1871121228
- Provider Name
- JOHN THOMAS NAWROCKI MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2102 HARRISBURG PIKE LANCASTER, PA 17601
- Location Phone
- (717) 544-9400
- Mailing Address
- 2102 HARRISBURG PIKE LANCASTER, PA 17601
- Mailing Phone
- (717) 544-9400
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-31-2020
- Last Update Date
- 06-22-2026
- Code Navigator
An internist like John Nawrocki 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.
- 1871121228
- License State
- PA
- 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.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area 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 1871121228, 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 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 52 is 60. 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.
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
LANCASTER, PA 17601
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1871121228, enumerated as an "individual" on March 31, 2020.
The provider is located at 2102 HARRISBURG PIKE LANCASTER, PA 17601 and the phone number is (717) 544-9400.
Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.
