Active NPI
Robert H. Mayernik, M.D.
- Gynecology Physician
- Frederick, MD
National Provider Identifier
1942290127
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gynecology Physician
- License
- D0026401
- Practice address
- 174 Thomas Johnson Dr
Suite 204
Frederick, MD 21702-4423 - Phone
- (301) 662-2300
- Fax
- (301) 662-7364
- NPI assigned
- Oct 27, 2005
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Gynecology Physician | 207VG0400X | D0026401 | MD | Primary |
Addresses
Primary practice location
174 Thomas Johnson Dr
Suite 204
Frederick, MD 21702-4423
Mailing address
7185 Stillwater CT
Frederick, MD 21702-2988
Phone (301) 662-2300
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| D0026401 | MD | MD | Gynecology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Dr. Robert H. Mayernik, LLC | Past | Accepting new patients | |
| Frederick Health Hospital Inc | Past | Accepting new patients |
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Specialist
- Frederick, MD
- NPI 1083739411
-
- General Acute Care Hospital
- Frederick, MD
- NPI 1538165527
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1130371200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1942290127",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "7185 STILLWATER CT",
"city": "FREDERICK",
"state": "MD",
"postal_code": "217022988",
"telephone_number": "301-662-2300",
"fax_number": "301-662-7364"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "174 THOMAS JOHNSON DR",
"address_2": "SUITE 204",
"city": "FREDERICK",
"state": "MD",
"postal_code": "217024423",
"telephone_number": "301-662-2300",
"fax_number": "301-662-7364"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MAYERNIK",
"first_name": "ROBERT",
"middle_name": "H.",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-27",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207VG0400X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology, Gynecology",
"state": "MD",
"license": "D0026401",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Frederick, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.