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

Ronen Marmur, MD

Individual provider Rheumatology Physician · NPI 1609821818

Ronen Marmur, MD practises Rheumatology in Ridgefield, Connecticut. Qualified in 1995, 31 years ago. Practices with Central Maine Medical Center, a 347-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
31
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

16 Twixt Hills Rd
Ridgefield, CT 06877-2035
Phone: (646) 423-5066
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence C211864 (CA)

Record details

NPI number1609821818
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2006
Last updated in NPPESOctober 29, 2026
Certification dateOctober 29, 2026

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Central Maine Medical Center — 347 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients333
Services billed 14,912 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Central Maine Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 347 clinicians in the practice; 12 are shown here.