Mark Patrick Lewis, MD
Internal Medicine Physician · Mountain View, CA
Mark Patrick Lewis, MD is an internal medicine physician with a practice address in Mountain View, California, and NPI 1891985800, issued on Jul 26, 2007. Check the license (California A96667, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Patrick Lewis
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A96667 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2204 Grant RD Ste 105, Mountain View, CA 94040
- Phone
- (650) 967-8890
- Enumerated
- Jul 26, 2007
- Record last updated
- Dec 15, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090113000262); may accept Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2204 Grant RD Ste 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara RatiaAcupuncturist1497138473
Verify Mark Patrick Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A96667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% more Medicare Part D claims than the average internal medicine physician in 2024
5,377 Medicare Part D claims for 409 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 153 claims were for opioids.
Most prescribed
- Amlodipine Besylate323 claims
- Atorvastatin Calcium281 claims
- Levothyroxine Sodium281 claims
- Rosuvastatin Calcium234 claims
- Metformin Hcl210 claims
- Hydrochlorothiazide147 claims
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.
The MIPS final score for 2023 (Medicare payment program): 9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $265.70
3 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark Patrick Lewis among 17,696 internal medicine physician records in California
Mark Patrick Lewis, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2005 · median 2004 among the 11,065 with a school on file
- Record last updated2009 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
119 internal medicine physician records list a practice address in Mountain View
They are 119 of the 2,467 NPPES records with a practice address in Mountain View, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Mountain View → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ravin Agah, M.D.Mountain View, CA 940401528075017
- Galina Balon, MDMountain View, CA 940401114932571
- Barbara Campbell, M.D.Mountain View, CA 940401679597405
- Steven Carlson, MDMountain View, CA 940401902813496
- Dean Cummings, MDMountain View, CA 940401265454029
- Vivien D'Andrea, MDMountain View, CA 940401760497135
- Francis Garrett, MDMountain View, CA 940401295799724
- David Kaufman, MDMountain View, CA 940401720013782
Common questions
What is Mark Patrick Lewis, MD's NPI number?
Mark Patrick Lewis, MD's National Provider Identifier (NPI) is 1891985800, issued on Jul 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Patrick Lewis, MD located?
The NPPES record lists a practice address at 2204 Grant RD Ste 105, Mountain View, CA, 94040. Phone: (650) 967-8890. Providers update this record themselves, so call before visiting.
How can I verify Mark Patrick Lewis, MD's license?
NPPES lists California license number A96667, 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 Mark Patrick Lewis, MD prescribe under Medicare Part D?
In 2024, Mark Patrick Lewis, MD had 5,377 Medicare Part D claims for 409 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Patrick Lewis, MD's MIPS final score?
The 2023 MIPS final score is 9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.