David Cahn, MD
NPI 1689762205 · Specialist · San Jose, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Cahn, MD is a Specialist provider in San Jose, CA (NPI 1689762205).
Provider details
- NPI number
- 1689762205
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G070021 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,666 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,150 | $155 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 180 | $18 |
| Administration of Influenza Virus VaccineG0008 | 97 | $39 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 51 | $76 |
| 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 AllowG0181 | 44 | $125 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 187 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 455 | 129 |
| Rosuvastatin Calcium | 380 | 117 |
| Levothyroxine Sodium | 313 | 93 |
| Losartan Potassium | 251 | 67 |
| Metformin Hclbrand: Metformin Hcl Er | 244 | 72 |
| Evolocumabbrand: Repatha Sureclick | 233 | 50 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$11,115 across 258 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is David Cahn's NPI number?
- David Cahn's National Provider Identifier (NPI) is 1689762205, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Cahn's specialty?
- David Cahn is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is David Cahn located?
- David Cahn's practice location on file with NPPES is 295 Oconnor Dr, San Jose, CA 95128-1624.
- What is David Cahn's phone number?
- The practice phone number listed in the NPPES registry for David Cahn is (408) 279-0548.
- Does David Cahn accept Medicare?
- David Cahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Cahn's NPI active?
- Yes — David Cahn's NPI (1689762205) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.