Individual Healthcare Provider
Nathan James Leu, M.D.
Provider's NPPES record last updated: June 17, 2021
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1386602290
- Primary Specialty
- Medical Genetics — Clinical Genetics (M.D.)
- Practice Location
- Portland, Maine
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 21, 2026, 10:31 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Medical Genetics
Clinical Genetics (M.D.)
Allopathic & Osteopathic Physicians
A clinical geneticist demonstrates competence in providing comprehensive diagnostic, management and counseling services for genetic disorders.
Taxonomy code 207SG0201X Family Medicine
Allopathic & Osteopathic Physicians
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Taxonomy code 207Q00000X
Provider-Reported License Information
- Medical Genetics (Maine)
- MD22180
- Family Medicine (Maine)
- MD22180
- Family Medicine (Ohio)
- 35073229
- Family Medicine (Maryland)
- D80007
Practice Locations
Practice Location
1577 Congress St
Portland, Maine 04102
Phone: (207) 662-5522
Record Information
- Enumeration Date
- May 2, 2006
- Provider's NPPES Record Last Updated
- June 17, 2021
- Certification Date
- June 17, 2021
- NPISignal NPPES Dataset
- August 2026
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