Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Elena Eftimova Rittmeyer

Individual provider Nurse Practitioner · NPI 1306606595

Elena Eftimova Rittmeyer is a Nurse Practitioner in Chelmsford, Massachusetts. Qualified in 2023, 3 years ago. Practices with Lawrence General Community Medical Service PLLC, a 53-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
3
Licensed in
MA
In the registry since
2024
Claim this listing Report a problem Suggest an edit

Practice location Address checks out

290 Littleton Rd Unit 3
Chelmsford, MA 01824-3429
Phone: (978) 685-2460
Fax: (978) 685-2572
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence RN265744 (MA)

Record details

NPI number1306606595
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedMarch 22, 2024
Last updated in NPPESMay 28, 2025
Certification dateMay 28, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Group practice Lawrence General Community Medical Service Pllc — 53 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients182
Services billed 706 a service is one billed item, such as a visit, a test or a procedure
Average patient age83

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Lawrence General Community Medical Service PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 53 clinicians in the practice; 12 are shown here.

Other providers in Chelmsford