Michael Lewis, MD
NPI 1700826740 · Family Medicine Physician · Concord, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Lewis, MD is a Family Medicine Physician provider in Concord, CA (NPI 1700826740).
Provider details
- NPI number
- 1700826740
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G64666 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
12 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 12 | $9 |
Typical Medicare-allowed amounts for these services range $9–$9 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 1333 Powell StSuite 103Emeryville, CA 94608-2598Phone: (510) 225-1000Fax: (510) 225-1019
Registry dates
- Enumerated
- 2006-06-07
- Last updated
- 2025-03-17
- Certified
- 2025-03-17
Frequently asked questions
- What is Michael Lewis's NPI number?
- Michael Lewis's National Provider Identifier (NPI) is 1700826740, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Lewis's specialty?
- Michael Lewis is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Lewis located?
- Michael Lewis's practice location on file with NPPES is 2001 Diamond Blvd Ste C-100, Concord, CA 94520-5737.
- What is Michael Lewis's phone number?
- The practice phone number listed in the NPPES registry for Michael Lewis is (888) 663-6331.
- Does Michael Lewis accept Medicare?
- Michael Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Lewis's NPI active?
- Yes — Michael Lewis's NPI (1700826740) is active in the NPPES registry as of the last update on 2025-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.