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

Megan Renee Ratterman, DO

Individual provider Hematology & Oncology Physician · NPI 1407145683

Megan Renee Ratterman, DO is a Hematology/Oncology in Sheridan, Wyoming. Qualified in 2011, 15 years ago. Practices with Memorial Hospital of Sheridan County, a 86-clinician group and accepts Medicare assignment. Licensed in Illinois and Wyoming.

Years since qualifying
15
Licensed in
IL, WY
In the registry since
2011
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1401 W 5th St
Sheridan, WY 82801
Phone: (307) 674-6022
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 11132A (WY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125.059595 (IL)

Record details

NPI number1407145683
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 28, 2011
Last updated in NPPESOctober 20, 2025
Certification dateOctober 20, 2025
Mailing address1401 W 5th St, Sheridan, WY 82801-2799

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Memorial Hospital Of Sheridan County — 86 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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