Nephrology Asssociates of the Merrimack Valley PC
NPI 1700083433 · Nephrology Physician · Tewksbury, MA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nephrology Asssociates of the Merrimack Valley PC is a Nephrology Physician organization in Tewksbury, MA (NPI 1700083433).
Provider details
- NPI number
- 1700083433
- Entity type
- Organization
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sarah Leduc, Practice Manager(978) 453-1811
- License
- 37818 (MA)
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
18 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
- 2007-06-27
- Last updated
- 2024-02-07
- Certified
- 2024-02-07
Frequently asked questions
- What is Nephrology Asssociates of the Merrimack Valley PC's NPI number?
- Nephrology Asssociates of the Merrimack Valley PC's National Provider Identifier (NPI) is 1700083433, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Nephrology Asssociates of the Merrimack Valley PC?
- Nephrology Asssociates of the Merrimack Valley PC is classified in the NPPES registry as Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Nephrology Asssociates of the Merrimack Valley PC located?
- Nephrology Asssociates of the Merrimack Valley PC's practice location on file with NPPES is 600 Clark Rd, Tewksbury, MA 01876-1699.
- What is Nephrology Asssociates of the Merrimack Valley PC's phone number?
- The practice phone number listed in the NPPES registry for Nephrology Asssociates of the Merrimack Valley PC is (978) 453-1811.
- Does Nephrology Asssociates of the Merrimack Valley PC accept Medicare?
- Nephrology Asssociates of the Merrimack Valley PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Nephrology Asssociates of the Merrimack Valley PC?
- The authorized official listed on Nephrology Asssociates of the Merrimack Valley PC's NPPES record is Sarah Leduc, Practice Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Nephrology Asssociates of the Merrimack Valley PC's NPI active?
- Yes — Nephrology Asssociates of the Merrimack Valley PC's NPI (1700083433) is active in the NPPES registry as of the last update on 2024-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.