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

Dr. Cecily Karen Peterson, MD

Individual provider Internal Medicine Physician · NPI 1447222369

Dr. Cecily Karen Peterson, MD practises Internal Medicine in Tacoma, Washington. Graduated from Geisel School of Medicine at Dartmouth in 1995, 31 years ago. Practices with Legacy Healthcare Services Inc, a 3,624-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Louisiana.

Years since qualifying
31
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
LA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Partly verified

Some contact details are missing from the federal record.

Madigan Army Medical Center 9040 Reid St
Tacoma, WA 98431-0001 Not confirmed with CMS for 19 years — call before visiting
Phone: (253) 968-0208
Fax: (253) 968-1168
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 12181R (LA)

Record details

NPI number1447222369
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 3, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 1995 (31 years in practice)
Group practice Legacy Healthcare Services Inc — 3624 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 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 patients320
Services billed 2,912 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Legacy Healthcare Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3624 clinicians in the practice; 12 are shown here.

Other providers in Tacoma