DR. ROBERT H. MAYERNIK M.D.
NPI 1942290127
Obstetrics & Gynecology - Gynecology in Frederick, MD
- Individual
- Male
- Obstetrics & Gynecology
- Gynecology
About ROBERT MAYERNIK
This page provides the complete NPI Profile along with additional information for Robert Mayernik, a women's health care provider established in Frederick, Maryland with a medical specialization in Obstetrics & Gynecology, focusing in gynecology . The healthcare provider is registered in the NPI registry with number 1942290127 assigned on October 2005. The practitioner's primary taxonomy code is 207VG0400X with license number D0026401 (MD). The provider is registered as an individual and his NPI record was last updated July 2026.
- NPI
- 1942290127
- Provider Name
- DR. ROBERT H. MAYERNIK M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 174 THOMAS JOHNSON DR SUITE 204 FREDERICK, MD 21702
- Location Phone
- (301) 662-2300
- Location Fax
- (301) 662-7364
- Mailing Address
- 7185 STILLWATER CT FREDERICK, MD 21702
- Mailing Phone
- (301) 662-2300
- Mailing Fax
- (301) 662-7364
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-27-2005
- Last Update Date
- 07-13-2026
- Code Navigator
Women's health care providers like Robert Mayernik treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, 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
Obstetrics & Gynecology Gynecology
- Taxonomy Code
- 207VG0400X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- D0026401
- License State
- MD
- Taxonomy Description
- A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. Source: National Uniform Claim Committee
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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 1942290127, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).
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 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 12 providers are registered at the same or a nearby location.
FREDERICK, MD 21702
FREDERICK, MD 21702
FREDERICK, MD 21702
FREDERICK, MD 21702
FREDERICK, MD 21702
FREDERICK, MD 21702
FREDERICK, MD 21702
FREDERICK, MD 21702
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1942290127, enumerated as an "individual" on October 27, 2005.
The provider is located at 174 THOMAS JOHNSON DR SUITE 204 FREDERICK, MD 21702 and the phone number is (301) 662-2300.
Obstetrics & Gynecology with taxonomy code 207VG0400X and a focus in Gynecology.
