DR. MARK GEORGE JANCZEWSKI MD, MPH
NPI 1124022843
Preventive Medicine - Clinical Informatics in Alexandria, VA
NPI Status: Active since June 09, 2005
Contact Information
425 S PAYNE ST
ALEXANDRIA, VA
ZIP 22314
Phone: (703) 994-7637
- Individual
- Male
- Preventive Medicine
- Clinical Informatics
About MARK JANCZEWSKI
This page provides the complete NPI Profile along with additional information for Mark Janczewski, a provider established in Alexandria, Virginia with a medical specialization in Preventive Medicine, focusing in clinical informatics . The healthcare provider is registered in the NPI registry with number 1124022843 assigned on June 2005. The practitioner's primary taxonomy code is 2083C0008X with license number 0101041106 (VA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1124022843
- Provider Name
- DR. MARK GEORGE JANCZEWSKI MD, MPH
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 425 S PAYNE ST ALEXANDRIA, VA 22314
- Location Phone
- (703) 994-7637
- Mailing Address
- 425 S PAYNE ST ALEXANDRIA, VA 22314
- Mailing Phone
- (703) 994-7637
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 06-09-2005
- Last Update Date
- 09-03-2025
- Code Navigator
Location Map
Secondary Locations
- 410 Government Ave Ste 1
Valparaiso, FL 32580
(703) 994-7637
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
Preventive Medicine Clinical Informatics
- Taxonomy Code
- 2083C0008X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 0101041106
- License State
- VA
- Taxonomy Description
- Physicians who practice Clinical Informatics collaborate with other health care and information technology professionals to analyze, design, implement and evaluate information and communication systems that enhance individual and population health outcomes, improve patient care, and strengthen the clinician-patient relationship. Clinical Informaticians use their knowledge of patient care combined with their understanding of informatics concepts, methods, and tools to: assess information and knowledge needs of health care professionals and patients; characterize, evaluate, and refine clinical processes; develop, implement, and refine clinical decision support systems; and lead or participate in the procurement, customization, development, implementation, management, evaluation, and continuous improvement of clinical information systems.
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 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | 0101041106 (VA) |
| 2 | 2083A0100X | Allopathic & Osteopathic Physicians | Preventive Medicine | 0101041106 (VA) |
| 3 | 2083P0500X | Allopathic & Osteopathic Physicians | Preventive Medicine | 0101041106 (VA) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| 0101041106 | OTHER (01) | VA | LICENSE |
| ME175967 | OTHER (01) | FL | LICENSE |
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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 1124022843, 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 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 57 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1124022843, enumerated as an "individual" on June 09, 2005.
The provider is located at 425 S PAYNE ST ALEXANDRIA, VA 22314 and the phone number is (703) 994-7637.
Preventive Medicine with taxonomy code 2083C0008X and a focus in Clinical Informatics.
The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
