Provider Profile
David E. Duffy, PhD
Unclaimed ProfileAbout Dr. Duffy
Listed in the NPI registry as a clinical psychologist, David E. Duffy, PhD practices in La Mesa, CA. David is also listed as specializing in psychologist — clinical. Medicare claims data shows David provided 753 services to 289 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (800) 257-8715
- Email not available
Practice Locations
8787 CENTER DR
La Mesa, CA 91942
Concerns and Conditions Addressed
Within Clinical Psychology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
753 services · 289 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Psychotherapy, 30 minutes | Treatment | 90832 |
192 |
| Psychotherapy, 45 minutes | Treatment | 90834 |
190 |
| Psychotherapy, 45 minutes | Treatment | 90834 |
132 |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
115 |
| Psychotherapy, 30 minutes | Treatment | 90832 |
113 |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other clinical psychologists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other clinical psychologists in La Mesa 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1999 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy, 30 minutes 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Duffy?
Dr. Duffy is a clinical psychologist in La Mesa, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CLINICAL PSYCHOLOGIST”.
NPI registry
What is Dr. Duffy's address?
Dr. Duffy is listed at 8787 CENTER DR, La Mesa, CA 91942. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Duffy?
The number on file is (800) 257-8715. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Duffy?
Dr. Duffy's National Provider Identifier is 1326244955. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Duffy train?
Dr. Duffy attended Other, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Duffy have?
Dr. Duffy has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Duffy perform?
According to Medicare billing data, Dr. Duffy provides treatments such as psychotherapy, 30 minutes and psychotherapy, 45 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Duffy's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Duffy. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.