Physician Profile
Unclaimed ProfileAbout CAHN
David Alan Cahn, MD is a healthcare provider in San Jose, CA specializing in family practice. David trained at Jefferson Medical College of Thomas Jefferson University, graduating in 1989. David is also listed as specializing in specialist. Medicare claims data shows David provided 1,754 services to 630 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
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (408) 279-0548
- Email not available
Practice Locations
295 OCONNOR DR
San Jose, CA 95128
Procedures Most Often Billed to Medicare
1,754 services · 630 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
180 |
| Influenza vaccine, inactivated | Treatment | 90653 |
88 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
40 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
1,150 |
| Administration of influenza virus vaccine | Billing code | G0008 |
97 |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
51 |
| Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allo | Billing code | G0181 |
44 |
| Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99439 |
24 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
22 |
| Transitional care management services for problem of high complexity | Office visit | 99496 |
16 |
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.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other family practices in San Jose 8
Same specialty, same city.
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1989 at Jefferson Medical College of Thomas Jefferson University 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug or substance under skin or into muscle 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Cahn specialize in?
Dr. Cahn is a family practice in San Jose, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “FAMILY PRACTICE”.
NPI registry
Where is Dr. Cahn located?
Dr. Cahn is listed at 295 OCONNOR DR, San Jose, CA 95128. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Cahn's phone number?
The number on file is (408) 279-0548. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Cahn?
Dr. Cahn's National Provider Identifier is 1689762205. 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. Cahn go to medical school?
Dr. Cahn attended Jefferson Medical College of Thomas Jefferson University, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Cahn have?
Dr. Cahn has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Cahn do most often?
According to Medicare billing data, Dr. Cahn provides treatments such as injection of drug or substance under skin or into muscle and influenza vaccine, inactivated, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Cahn's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Cahn. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.