Dr. Joan F Tryzelaar, MD

Individual provider Adult Medicine Physician · NPI 1679819031

Dr. Joan F Tryzelaar, MD practises Thoracic Surgery in Beverly, Massachusetts. Qualified in 1972, 54 years ago. Practices as a sole proprietor, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts and Maine.

Years since qualifying: 54
Licensed in: MA, ME
In the registry since: 2012
Specialties on file: 3

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

500 Cummings Ctr Ste 1800
Beverly, MA 01915
Phone: (978) 921-1210
Fax: (978) 921-1534

Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

1 Gilman Wass Rd, Addison, ME 04606-3639 — (207) 415-1307

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary)	Taxonomy 208G00000X · Licence 4066 (MA)
Adult Medicine Physician	Taxonomy 207QA0505X · Licence 010688 (ME)
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician	Taxonomy 208G00000X · Licence 010688 (ME)

Record details

NPI number	1679819031
Entity type	Individual (Type 1)
Gender	Male
Credentials	MD
Sole proprietor	Yes
NPI enumerated	December 12, 2012
Last updated in NPPES	August 28, 2018

Medicare enrollment

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

Medicare specialty	THORACIC SURGERY
Medical school	OTHER
Graduated	1972 (54 years in practice)
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of tissue	376 times · 95th percentile
Removal of skin lesions	100 times · 76th percentile
Removal of nail tissue	20 times · 61st percentile
Removal or shaving of skin growth	1–10 times
Skin biopsy	1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients	164
Services billed	926 a service is one billed item, such as a visit, a test or a procedure
Average patient age	77

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.

North Shore Medical Center Hospital · Salem, MA
Northeast Hospital Corporation Hospital · Beverly, MA
Lahey Hospital & Medical Center, Burlington Hospital · Burlington, MA