Lewis Gamarra, M.D.
Hospitalist Physician · Emeryville, CA
Lewis Gamarra, M.D. is a hospitalist physician with a practice address in Emeryville, California, and NPI 1124048608, issued on Jul 20, 2006. Check the license (California G70417, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lewis Gamarra
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- G70417 CA
70417 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Powell St Ste 400, Emeryville, CA 94608
- Phone
- (510) 851-7501
- Enumerated
- Jul 20, 2006
- Record last updated
- Jan 11, 2023
- Fax
- (510) 851-7446
- Medicaid ID
- 00G704170 CA
- Medicare enrollment
- Enrolled (PECOS I20100330000779); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 2100 Powell St Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Avery, D.O.Hospitalist Physician1457694796
- Benjamin Boodt, MDEmergency Medicine Physician1780212514
- Jason Chang, PA-CPhysician Assistant1386442838
- Daniel Drewry, MDEmergency Medicine Physician1427678325
- Elias Giraldo, MDNeurology Physician1033100722
- Jessica GrierFamily Nurse Practitioner1881254878
Verify Lewis Gamarra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G70417Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.3 times the Medicare Part D claims of the average hospitalist physician in 2024
4,842 Medicare Part D claims for 269 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 87 claims were for opioids.
Most prescribed
- Amlodipine Besylate324 claims
- Atorvastatin Calcium294 claims
- Losartan Potassium234 claims
- Hydrochlorothiazide220 claims
- Metoprolol Succinate197 claims
- Levothyroxine Sodium153 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): 78.4 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: $85.89
3 payments; by number, the most common kind was food and beverage; the largest payer was Eisai Inc. The 7,324 providers of this specialty with any payment received $494.84 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.
Bills Medicare through one group practice
- Vituity Hospitalists PCSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lewis Gamarra among 3,099 hospitalist physician records in California
Lewis Gamarra, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1988 · median 2010 among the 2,505 with a school on file
- Record last updated2023 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 hospitalist physician records list a practice address in Emeryville
They are 13 of the 703 NPPES records with a practice address in Emeryville, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Emeryville → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- John Avery, D.O.Emeryville, CA 946081457694796
- Michael Hajduk, MDEmeryville, CA 946081215002753
- Connor Johnson, MDEmeryville, CA 946081780010603
- Nadia Lupercio, M.D.Emeryville, CA 946081881837433
- Maria Marmol, M.D.Emeryville, CA 946081699904474
- Amina Martel, M.DEmeryville, CA 946081881610848
- Gigi Nickas, MDEmeryville, CA 946081710907274
- Piyal Patel, DOEmeryville, CA 946081043426745
Common questions
What is Lewis Gamarra, M.D.'s NPI number?
Lewis Gamarra, M.D.'s National Provider Identifier (NPI) is 1124048608, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lewis Gamarra, M.D. located?
The NPPES record lists a practice address at 2100 Powell St Ste 400, Emeryville, CA, 94608. Phone: (510) 851-7501. Providers update this record themselves, so call before visiting.
How can I verify Lewis Gamarra, M.D.'s license?
NPPES lists California license number G70417, 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 Lewis Gamarra, M.D. prescribe under Medicare Part D?
In 2024, Lewis Gamarra, M.D. had 4,842 Medicare Part D claims for 269 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Lewis Gamarra, M.D.'s MIPS final score?
The 2023 MIPS final score is 78.4 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.