Doctor profile · Federal record

Dr. Joanne Duffy, PH.D

Psychologist (CMS: Clinical Psychologist) · Baltimore, MD

  • NPI 1124172226
  • Accepts Medicare
  • 37 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2411 W Belvedere Ave Ste 504
Baltimore, MD 212155232
(410) 601-0070
fax (410) 601-0290

Credentials & registration

NPPES · NUCC
NPI registered
January 2007 — 19 yrs on file
Profile last updated
June 19, 2013
Year of graduation
1989 — 37 yrs since
Specialty taxonomy
103T00000X — NUCC code
State license (1)
Maryland #2700

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1124172226. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
543
Distinct HCPCS
1
Medicare allowed
$71,744
HCPCS Description Services Patients Avg allowed
90837 Psychotherapy, 1 hour 543 17 $132

In context: peer comparison

Among 12 peers in Baltimore Psychologist, average services per provider: 93. This provider delivers 5.8× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Joanne Duffy's medical specialty?
Dr. Joanne Duffy practices Psychologist in Baltimore, MD.
Where does Dr. Joanne Duffy practice?
Dr. Joanne Duffy practices at 2411 W Belvedere Ave Ste 504, Baltimore, MD 212155232. Office phone: 4106010070.
What is Dr. Joanne Duffy's NPI?
Dr. Joanne Duffy's National Provider Identifier (NPI) is 1124172226, issued by NPPES.
Does Dr. Joanne Duffy accept Medicare assignment?
Yes. Dr. Joanne Duffy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joanne Duffy commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837). Source: CMS Medicare Physician & Other Practitioners file.