Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Catherine Harty McCrann, MD

Individual provider Gastroenterology Physician · NPI 1528167137

Catherine Harty McCrann, MD practises Gastroenterology in Lewiston, Maine. Graduated from Albert Einstein College of Medicine of Yeshiva University in 2003, 23 years ago. Practices with Mercy Hospital, a 308-clinician group and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
23
Trained at
Albert Einstein College of Medicine of Yeshiva University
Licensed in
ME
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

77 Bates St Ste 200
Lewiston, ME 04240-7637 Not confirmed with CMS for 15 years — call before visiting
Phone: (207) 784-5784
Fax: (207) 784-1477
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 018506 (ME)

Record details

NPI number1528167137
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 21, 2006
Last updated in NPPESOctober 26, 2010

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY
Graduated 2003 (23 years in practice)
Group practice Mercy Hospital — 308 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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.

Upper gastrointestinal (GI) endoscopy for acid reflux 83 times · 73rd percentile
Colonoscopy 71 times · 71st 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 patients241
Services billed 446 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

  • Mainehealth Maine Medical Center Hospital · Portland, ME · listed as Maine Medical Center
  • Mainehealth Mid Coast Hospital Hospital · Brunswick, ME
  • Northern Light Mercy Hospital Hospital · Portland, ME

Colleagues at Mercy Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 308 clinicians in the practice; 12 are shown here.

Other providers in Lewiston