OTTO ROZA M.D., P.A.
NPI 1629915442
Internal Medicine - Nephrology in Frederick, MD
NPI Status: Active since April 30, 2026
Contact Information
140 THOMAS JOHNSON DR STE 202
FREDERICK, MD
ZIP 21702
Phone: (301) 694-7788
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Organization
- Internal Medicine
- Nephrology
- CLIA Number: 21D0220533
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 03-31-2027
About OTTO ROZA M.D., P.A.
This page provides the complete NPI Profile along with additional information for Otto Roza M.d., P.a., an internist established in Frederick, Maryland operating as a Internal Medicine, focusing in nephrology . The healthcare provider is registered in the NPI registry with number 1629915442 assigned on April 2026. The practitioner's primary taxonomy code is 207RN0300X. The provider is registered as an organization and their NPI record was last updated May 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. The authorized official of this NPI record is Jenn Dawn Rohrer (Office Manager)
- NPI
- 1629915442
- Provider Name
- OTTO ROZA M.D., P.A.
- Entity Type
- Organization
- Location Address
- 140 THOMAS JOHNSON DR STE 202 FREDERICK, MD 21702
- Location Phone
- (301) 694-7788
- Mailing Address
- 12931 OAK HILL AVE HAGERSTOWN, MD 21742
- Mailing Phone
- (301) 797-9600
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 04-30-2026
- Last Update Date
- 05-12-2026
- Code Navigator
An internist like Otto Roza M.d., P.a. 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 Nephrology
- Taxonomy Code
- 207RN0300X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
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.
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 21D0220533
- Facility Type
- Physician Office
- Certificate Effective Date
- April 01, 2025
- Certificate Expiration Date
- March 31, 2027
- Laboratory Director
- MUNEED S. MALIK
- Certificate Type
- Certificate for Provider-Performed Microscopy Procedures (PPMP)
- Certificate Type Description
- This CLIA certificate is issued to Otto Roza M.d., P.a. in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing.
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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 1629915442, we treat the final digit (2) 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).
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 68 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1629915442, enumerated as an "organization" on April 30, 2026.
The provider is located at 140 THOMAS JOHNSON DR STE 202 FREDERICK, MD 21702 and the phone number is (301) 694-7788.
Internal Medicine with taxonomy code 207RN0300X and a focus in Nephrology.
