Doctor profile · Federal record

Dr. Abner Louissaint, MD, PHD

Anatomic Pathology & Clinical Pathology Physician (CMS: Pathology) · Boston, MA

  • NPI 1124154950
  • Accepts Medicare
  • 21 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
Massachusetts General Hospital, 55 Fruit Street
Boston, MA 02114
(617) 726-2967

Credentials & registration

NPPES · NUCC
NPI registered
February 2007 — 19 yrs on file
Profile last updated
April 16, 2010
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207ZP0102X — NUCC code
State license (1)
Massachusetts #L-225010

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1124154950. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
626
Distinct HCPCS
10
Medicare allowed
$23,338
HCPCS Description Services Patients Avg allowed
88341 Special stained specimen slides to examine tissue, each additional procedure 196 41 $30
88305 Pathology examination of tissue using a microscope, intermediate complexity 62 52 $39
88342 Special stained specimen slides to examine tissue, initial procedure 50 47 $37
88360 Microscopic genetic analysis of tumor, manual 49 37 $44
88313 Special stained specimen slides to examine tissue including interpretation and report 45 39 $13
85097 Bone marrow, smear interpretation 40 40 $51
88188 Flow cytometry technique for dna or cell analysis, 9 to 15 markers 37 36 $66
88311 Preparation of tissue for examination by removing any calcium present 37 37 $13
88187 Flow cytometry technique for dna or cell analysis, 2 to 8 markers 19 19 $37
88321 Surgical pathology consultation and report on referred slides prepared elsewhere 19 17 $89

In context: peer comparison

Among 76 peers in this city , average services per provider: 122. This provider delivers 5.1× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Abner Louissaint's medical specialty?
Dr. Abner Louissaint practices Anatomic Pathology & Clinical Pathology Physician in Boston, MA.
Where does Dr. Abner Louissaint practice?
Dr. Abner Louissaint practices at Massachusetts General Hospital, Boston, MA 02114. Office phone: 6177262967.
What is Dr. Abner Louissaint's NPI?
Dr. Abner Louissaint's National Provider Identifier (NPI) is 1124154950, issued by NPPES.
Does Dr. Abner Louissaint accept Medicare assignment?
Yes. Dr. Abner Louissaint accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Abner Louissaint commonly perform?
Top Medicare-reported procedures in 2023: Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341); Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, initial procedure (HCPCS 88342). Source: CMS Medicare Physician & Other Practitioners file.