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

Ann E Erwin, MD

Individual provider Family Medicine Physician · NPI 1851494223

Ann E Erwin, MD is registered under Family Practice in Boise, Idaho. Graduated from University of Washington School of Medicine in 1993, 33 years ago. Practices with St Lukes Clinic-Treasure Valley LLC, a 1,150-clinician group and accepts Medicare assignment. Licensed in Idaho.

Years since qualifying
33
Trained at
University of Washington School of Medicine
Licensed in
ID
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

130 E Boise Ave
Boise, ID 83706 Not confirmed with CMS for 15 years — call before visiting
Phone: (208) 345-4066
Fax: (208) 345-4196
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence M6541 (ID)

Record details

NPI number1851494223
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 7, 2006
Last updated in NPPESMarch 10, 2011

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice St Lukes Clinic-Treasure Valley Llc — 1150 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 or shaving of skin growth 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 patients194
Services billed 432 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 St Lukes Clinic-Treasure Valley LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1150 clinicians in the practice; 12 are shown here.

Other providers in Boise