Doctor profile · Federal record
Dr. Donald Cassidy, PHD
Clinical Psychologist · Bethesda, MD
- NPI 1770511347
- Accepts Medicare
- MIPS 92.0 / 100 · 2023
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
6040 Southport Dr
Bethesda, MD 208141848
(301) 493-4200
fax (301) 493-6209 - Mailing address
-
19900 New Hampshire Ave
Brinklow, MD 208629744
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- July 9, 2007
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 103TC0700X — NUCC code
- State license (1)
- Maryland #02693
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770511347. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,138
Distinct HCPCS
5
Medicare allowed
$238,341
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90791 |
Psychiatric diagnostic evaluation | 777 | 715 | $156 | |
90832 |
Psychotherapy, 30 minutes | 585 | 191 | $69 | |
90834 |
Psychotherapy, 45 minutes | 575 | 46 | $104 | |
90834 |
Psychotherapy, 45 minutes | 148 | 56 | $91 | |
90832 |
Psychotherapy, 30 minutes | 53 | 24 | $79 |
In context: peer comparison
Among 1 peers in Bethesda Clinical Psychologist, average services per provider: 427. This provider delivers 5.0× the peer median.Frequently asked questions
What is Dr. Donald Cassidy's medical specialty?
Dr. Donald Cassidy practices Clinical Psychologist in Bethesda, MD.
Where does Dr. Donald Cassidy practice?
Dr. Donald Cassidy practices at 6040 Southport Dr, Bethesda, MD 208141848. Office phone: 3014934200.
What is Dr. Donald Cassidy's NPI?
Dr. Donald Cassidy's National Provider Identifier (NPI) is 1770511347, issued by NPPES.
Does Dr. Donald Cassidy accept Medicare assignment?
Yes. Dr. Donald Cassidy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Donald Cassidy commonly perform?
Top Medicare-reported procedures in 2023: Psychiatric diagnostic evaluation (HCPCS 90791); Psychotherapy (HCPCS 90832); Psychotherapy (HCPCS 90834). Source: CMS Medicare Physician & Other Practitioners file.