DR. NJAMBI WANJIRU MATHENGE M.D.
NPI 1285053488
Internal Medicine - Cardiovascular Disease in Lebanon, NH
About Dr. Njambi Wanjiru Mathenge M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NJAMBI WANJIRU MATHENGE M.D. (NPI 1285053488) is an individual cardiovascular disease provider in Lebanon, New Hampshire, licensed in New Hampshire (33764) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Njambi Wanjiru Mathenge M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Njambi Mathenge reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mary Hitchcock Memorial Hospital
Acute Care Hospitals · Lebanon, NHCheshire Medical Center
Acute Care Hospitals · Keene, NHAlice Peck Day Memorial Hospital
Critical Access Hospitals · Lebanon, NHRutland Regional Medical Center
Acute Care Hospitals · Rutland, VTNortheastern Vermont Regional Hospital
Critical Access Hospitals · Saint Johnsbury, VTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 03756 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
LEBANON, NH 03756
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Njambi Mathenge's NPI number?
The NPI number for Njambi Mathenge is 1285053488. It was assigned to this individual provider in the NPPES registry on April 15, 2014.
Where is Njambi Mathenge located?
Njambi Mathenge practices at 1 Medical Center Dr, Lebanon, NH 03756. The listed phone number is (603) 650-5000.
What is Njambi Mathenge's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Njambi Mathenge enrolled in Medicare?
Yes. Njambi Mathenge is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Njambi Mathenge's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Njambi Mathenge reassigns Medicare benefits to 2 organizations: Mary Hitchcock Memorial Hospital (Lebanon, NH) and Dartmouth-Hitchcock Clinic (Lebanon, NH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Njambi Mathenge's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Njambi Mathenge accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Njambi Mathenge as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Njambi Mathenge affiliated with any hospitals?
According to CMS data, Njambi Mathenge is affiliated with Mary Hitchcock Memorial Hospital, Cheshire Medical Center, Alice Peck Day Memorial Hospital, Rutland Regional Medical Center and Northeastern Vermont Regional Hospital.
When was this NPI record last updated?
The NPPES record for Njambi Mathenge was last updated on December 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Njambi Wanjiru Mathenge, M.D. · NPI 1285053488
Cardiovascular Disease physician in Lebanon, New Hampshire. Individual provider, active in the CMS NPPES registry since April 15, 2014.
## Identity
- **NPI:** 1285053488 (Entity type: Individual)
- **Enumerated:** April 15, 2014
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 33764 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 MEDICAL CENTER DR, Lebanon, NH 03756-1000
- **Phone:** (603) 650-5000 · **Fax:** (603) 640-1228
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mary Hitchcock Memorial Hospital (NPI 1629788237, Lebanon, NH); Dartmouth-Hitchcock Clinic (NPI 1548210198, Lebanon, NH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** December 15, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1285053488) · Data from the CMS NPPES public registry.