Active NPI
Potomac Nephrology, Inc.
- Nephrology Physician
- Germantown, MD
National Provider Identifier
1245242528
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nephrology Physician
- License
- D40201
- Legal business name
- POTOMAC NEPHROLOGY, INC.
- Practice address
- 1 Executive Park CT
Germantown, MD 20874-2643 - Phone
- (301) 528-3580
- Fax
- (301) 528-3589
- NPI assigned
- Aug 13, 2006
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Dr. Farzad Assar, M.D.
- Title
- President
- Phone
- (301) 528-3580
Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | D40201 | MD | |
| Nephrology Physician | 207RN0300X | D40201 | MD | Primary |
Addresses
Primary practice location
1 Executive Park CT
Germantown, MD 20874-2643
Mailing address
1 Executive Park CT
Germantown, MD 20874-2643
Phone (301) 528-3580
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in DC
Enrollment records 1
National Provider Directory
National Provider DirectoryLocations
1 Executive Park Ct
Germantown, MD 20874
Phone (301) 528-3580
Practitioners & affiliated clinicians
Practitioners 1
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1155427200000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1757548800000",
"number": "1245242528",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1 EXECUTIVE PARK CT",
"city": "GERMANTOWN",
"state": "MD",
"postal_code": "208742643",
"telephone_number": "301-528-3580",
"fax_number": "301-528-3589"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1 EXECUTIVE PARK CT",
"city": "GERMANTOWN",
"state": "MD",
"postal_code": "208742643",
"telephone_number": "301-528-3580",
"fax_number": "301-528-3589"
}
],
"practiceLocations": [],
"basic": {
"organization_name": "POTOMAC NEPHROLOGY, INC.",
"organizational_subpart": "NO",
"enumeration_date": "2006-08-13",
"last_updated": "2025-09-11",
"status": "A",
"authorized_official_last_name": "ASSAR",
"authorized_official_first_name": "FARZAD",
"authorized_official_title_or_position": "PRESIDENT",
"authorized_official_telephone_number": "301-528-3580",
"authorized_official_name_prefix": "Dr.",
"authorized_official_credential": "M.D."
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Internal Medicine",
"state": "MD",
"license": "D40201",
"primary": false
},
{
"code": "207RN0300X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Internal Medicine, Nephrology",
"state": "MD",
"license": "D40201",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Germantown, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.