Donald Cassidy, PHD
Clinical Psychologist · Bethesda, MD
Donald Cassidy, PHD is a clinical psychologist with a practice address in Bethesda, Maryland, and NPI 1770511347, issued on Jun 30, 2006. Check the license (Maryland 02693, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Donald Cassidy
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 02693 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6040 Southport Dr, Bethesda, MD 20814
- Phone
- (301) 493-4200
- Enumerated
- Jun 30, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (301) 493-6209
- Medicare enrollment
- Enrolled (PECOS I20191226001252); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,499 in Maryland → Look up another NPI →
Also registered at 6040 Southport Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Clement Afforo, RNRegistered Nurse1225399819
- Olaitan AjiyanPsychiatric/Mental Health Nurse Practitioner1982544672
- Bayan Al Sulaihat, LCSW-CClinical Social Worker1265202188
- Jeffrey Bracken, LCSW-CClinical Social Worker1396909982
- Robin BrooksSocial Worker1134072911
- Elaine Byergo, LCSW-CClinical Social Worker1417985003
Verify Donald Cassidy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 02693Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Senior Care Therapy LLCPassaic, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald Cassidy among 1,499 clinical psychologist records in Maryland
Donald Cassidy, PHD is one of 1,499 clinical psychologist records with a practice address in Maryland. 10% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 81% newer
- In a Medicare fileYes · 10% of these records are
- In the CMS Doctors and Clinicians fileYes · 18% of these records are
- Graduated1989 · median 2003 among the 265 with a school on file
- Record last updated2007 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
179 clinical psychologist records list a practice address in Bethesda
They are 179 of the 7,245 NPPES records with a practice address in Bethesda, and 1,499 clinical psychologist records in Maryland.
All 1,499 in Maryland → Every provider in Bethesda → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Robin Belamaric, PH.D.Bethesda, MD 208141497735823
- Samantha Bender, PH.D.Bethesda, MD 208141770529109
- Neil Bien, PH.D.Bethesda, MD 208141518060391
- Joseph Bleiberg, PH.D.Bethesda, MD 208141275608101
- Joanna EdwardsBethesda, MD 208141740372853
- Gary Emanuel, PHDBethesda, MD 208141104902022
- Jeffrey Goodie, PH.D.Bethesda, MD 208141356401715
- Corey Habben, PSY.D.Bethesda, MD 208141396711412
Common questions
What is Donald Cassidy, PHD's NPI number?
Donald Cassidy, PHD's National Provider Identifier (NPI) is 1770511347, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Donald Cassidy, PHD located?
The NPPES record lists a practice address at 6040 Southport Dr, Bethesda, MD, 20814. Phone: (301) 493-4200. Providers update this record themselves, so call before visiting.
How can I verify Donald Cassidy, PHD's license?
NPPES lists Maryland license number 02693, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
What is Donald Cassidy, PHD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.