Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Monica Karlen

Individual provider Pain Management Registered Nurse · NPI 1417608464

Monica Karlen is a Certified Registered Nurse Anesthetist (CRNA) in Boston, Massachusetts. Qualified in 2022, 4 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
4
Licensed in
SC
In the registry since
2022

Practice location Address checks out

55 Fruit St
Boston, MA 02114-2696
Phone: (617) 726-2000
Show map & directions

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

Specialties & licences

Pain Management Registered Nurse (primary) Taxonomy 163WP0000X · Licence 250897 (SC)

Record details

NPI number1417608464
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJanuary 11, 2022
Last updated in NPPESJanuary 11, 2022
Certification dateJanuary 11, 2022

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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