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

Marilyn E Olsen, PA

Individual provider Physician Assistant · NPI 1407856917

Marilyn E Olsen, PA is a Physician Assistant in Middlebury, Connecticut. Qualified in 1998, 28 years ago. Practices with Nephrology and Hypertension Assoc PC, a 5-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
28
Licensed in
CT
In the registry since
2005
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

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Practice location Address checks out

850 Straits Tpke
Middlebury, CT 06762-2843 Not confirmed with CMS for 13 years — call before visiting
Phone: (203) 758-1800
Fax: (203) 758-1804
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 000797 (CT)

Record details

NPI number1407856917
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA
Sole proprietorNo
NPI enumeratedJuly 26, 2005
Last updated in NPPESOctober 4, 2013

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Nephrology And Hypertension Assoc Pc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients33
Services billed 60 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Colleagues at Nephrology and Hypertension Assoc PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 5 clinicians in the practice; 2 are shown here.

Other providers in Middlebury