South Mountain Nephrology, LLC
NPI 1851403927 · Nephrology Physician · Belleville, NJ
South Mountain Nephrology, LLC is a Nephrology Physician organization in Belleville, NJ (NPI 1851403927).
Provider details
- NPI number
- 1851403927
- Entity type
- Organization
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Penny Defranco, President(973) 450-8999
- License
- MA062557 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2009-05-12
Frequently asked questions
- What is South Mountain Nephrology, LLC's NPI number?
- South Mountain Nephrology, LLC's National Provider Identifier (NPI) is 1851403927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is South Mountain Nephrology, LLC?
- South Mountain Nephrology, LLC is classified in the NPPES registry as Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is South Mountain Nephrology, LLC located?
- South Mountain Nephrology, LLC's practice location on file with NPPES is 5 Franklin Ave, Belleville, NJ 07109-3532.
- What is South Mountain Nephrology, LLC's phone number?
- The practice phone number listed in the NPPES registry for South Mountain Nephrology, LLC is (973) 450-8999.
- Who is the authorized official for South Mountain Nephrology, LLC?
- The authorized official listed on South Mountain Nephrology, LLC's NPPES record is Penny Defranco, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is South Mountain Nephrology, LLC's NPI active?
- Yes — South Mountain Nephrology, LLC's NPI (1851403927) is active in the NPPES registry as of the last update on 2009-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.