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

Megan B Littlefield, MD

Individual provider Internal Medicine Physician · NPI 1013964287

Megan B Littlefield, MD is an Internal Medicine in Billings, Montana. Graduated from University of Maryland School of Medicine in 1999, 27 years ago. Practices with Yellowstone City-County Health Dept, a 52-clinician group and accepts Medicare assignment. Licensed in Massachusetts and Montana.

Years since qualifying
27
Trained at
University of Maryland School of Medicine
Licensed in
MA, MT
In the registry since
2006
Specialties on file
2
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

123 S 27th St
Billings, MT 59101-4227
Phone: (406) 247-3350
Fax: (406) 247-3389
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 12778 (MT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 225423 (MA)

Record details

NPI number1013964287
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 31, 2006
Last updated in NPPESMay 8, 2015

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Yellowstone City-County Health Dept — 52 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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