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

Dr. Rachel L Mallalieu, DO

Individual provider Emergency Medicine Physician · NPI 1083629885

Dr. Rachel L Mallalieu, DO practises Emergency Medicine in Baltimore, Maryland. Graduated from Philadelphia College of Osteopathic Medicine in 2002, 24 years ago. Practices with Baltimore Washington Emergency Physicians, Inc, a 31-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
24
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
MD
In the registry since
2006
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

9000 Franklin Square Dr Franklin Square Hospital Ctr
Baltimore, MD 21237-3901 Not confirmed with CMS for 19 years — call before visiting
Phone: (443) 777-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence H0064433 (MD)

Record details

NPI number1083629885
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 30, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2002 (24 years in practice)
Group practice Baltimore Washington Emergency Physicians, Inc. — 31 clinicians
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 290 times · 94th percentile

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 patients131
Services billed 717 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Colleagues at Baltimore Washington Emergency Physicians, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 31 clinicians in the practice; 12 are shown here.

Other providers in Baltimore