David Lewis, M.D.
NPI 1316017858 · Internal Medicine Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Lewis, M.D. is a Internal Medicine Physician provider in Mountain View, CA (NPI 1316017858).
Provider details
- NPI number
- 1316017858
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G29804 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,078 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 535 | $103 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 471 | $9 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 384 | $83 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 236 | $3 |
| Urinalysis, Manual Test81002 | 135 | $3 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 177 | 50 |
| Levothyroxine Sodium | 141 | 40 |
| Amlodipine Besylate | 111 | 35 |
| Rosuvastatin Calcium | 83 | 22 |
| Omeprazole | 71 | 21 |
| Metformin Hcl | 66 | 20 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is David Lewis's NPI number?
- David Lewis's National Provider Identifier (NPI) is 1316017858, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Lewis's specialty?
- David Lewis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Lewis located?
- David Lewis's practice location on file with NPPES is 2204 Grant Rd, Mountain View, CA 94040-3855.
- What is David Lewis's phone number?
- The practice phone number listed in the NPPES registry for David Lewis is (650) 967-8890.
- Does David Lewis accept Medicare?
- David Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Lewis's NPI active?
- Yes — David Lewis's NPI (1316017858) 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.