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

Individual provider Trauma Surgery Physician · NPI 1730470477

Dr. Chiajung Karen Lu, MD practises General Surgery in Lewiston, Maine. Graduated from Pennsylvania State University College of Medicine in 2011, 15 years ago. Practices with Central Maine Medical Center, a 347-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
15
Trained at
Pennsylvania State University College of Medicine
Licensed in
ME
In the registry since
2011
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

12 High St Ste 401
Lewiston, ME 04240-7690
Phone: (207) 795-5767
Fax: (207) 795-2732
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Trauma Surgery Physician (primary) Taxonomy 2086S0127X · Licence MD21566 (ME)

Record details

NPI number1730470477
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 28, 2011
Last updated in NPPESJuly 21, 2022

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolPENNSYLVANIA STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Central Maine Medical Center — 347 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.

Hernia repair (minimally invasive) 1–10 times
Hernia repair - groin (open) 1–10 times
Removal of tissue 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 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 patients86
Services billed 136 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 Central Maine Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 347 clinicians in the practice; 12 are shown here.

Other providers in Lewiston