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

Lorreen Mattson, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1588088918

Lorreen Mattson, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Boston, Massachusetts. Qualified in 2013, 13 years ago. Practices with Associated Physicians of Harvard Medical Faculty Physicians at Beth Is, a 558-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts and Pennsylvania.

Years since qualifying
13
Licensed in
MA, PA
In the registry since
2014
Specialties on file
2
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

1 Boston Medical Ctr Pl
Boston, MA 02118-2908
Phone: (617) 638-6950
Fax: (617) 638-6966
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 800 Washington St, Boston, MA 02111-1552 — (617) 636-6044

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 100999 (PA)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence RN2352220 (MA)

Record details

NPI number1588088918
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedFebruary 5, 2014
Last updated in NPPESApril 17, 2026
Certification dateApril 17, 2026

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is — 558 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients99
Services billed 99 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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $146 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Associated Physicians of Harvard Medical Faculty Physicians at Beth Is

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 558 clinicians in the practice; 12 are shown here.

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