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
- Primary practice
-
2411 W Belvedere Ave Ste 504
Baltimore, MD 212155232
(410) 601-0070
fax (410) 601-0290
Credentials & registration
- 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
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
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
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.