Michael Lewis, MD
Family Medicine Physician · Concord, CA
Michael Lewis, MD is a family medicine physician with a practice address in Concord, California, and NPI 1700826740, issued on Jun 7, 2006. Check the license (California G64666, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Lewis
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G64666 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Diamond Blvd Ste C-100, Concord, CA 94520
- Phone
- (888) 663-6331
- Enumerated
- Jun 7, 2006
- Record last updated
- Mar 17, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20070822000983); accepts Medicare assignment
- Medical or professional school
- Northeastern Ohio University College Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2001 Diamond Blvd Ste C-100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justin Calvin, DNP, FNP-CNurse Practitioner1417494055
- Connie Choi, NPNurse Practitioner1598228389
- Vanessa PazNurse Practitioner1285382663
- Apurva Samant Pinnamaneni, MDFamily Medicine Physician1700048378
Verify Michael Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G64666Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
37 Medicare Part D claims for 19 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- One Medical Group IncEmeryville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Lewis among 17,133 family medicine physician records in California
Michael Lewis, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1987 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 family medicine physician records list a practice address in Concord
They are 38 of the 9,328 NPPES records with a practice address in Concord, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Concord → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Susan Adler-Bressler, M.D.Concord, CA 945201588615207
- Olawunmi Beckley, M.D.Concord, CA 945201497789499
- Teresa Brock, M.D.Concord, CA 945201619920444
- Wilbert Charles, MDConcord, CA 945201861487589
- Susanne Duesberg, M.D.Concord, CA 945201770509838
- Detlef Ehling, M.D.Concord, CA 945201154331155
- Thomas Greely, M.D.Concord, CA 945201851336820
- Brian Honbo, M.D.Concord, CA 945201578587721
Common questions
What is Michael Lewis, MD's NPI number?
Michael Lewis, MD's National Provider Identifier (NPI) is 1700826740, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Lewis, MD located?
The NPPES record lists a practice address at 2001 Diamond Blvd Ste C-100, Concord, CA, 94520. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Michael Lewis, MD's license?
NPPES lists California license number G64666, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Lewis, MD prescribe under Medicare Part D?
In 2024, Michael Lewis, MD had 37 Medicare Part D claims for 19 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.