Benjamin M. Loos, MD
Otolaryngology Physician · Walnut Creek, CA
Benjamin M. Loos, MD is an otolaryngology physician with a practice address in Walnut Creek, California, and NPI 1457441214, issued on Oct 13, 2006. Check the license (California A71850, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Benjamin M. Loos
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- A71850 CA
Self-reported in NPPES; status is on the state search - Practice location
- 365 Lennon LN Ste 280, Walnut Creek, CA 94598
- Phone
- (925) 932-3112
- Enumerated
- Oct 13, 2006
- Record last updated
- Feb 26, 2025
- Fax
- (925) 932-3317
- Medicare enrollment
- Enrolled (PECOS I20080512000664); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Also registered at 365 Lennon LN Ste 280
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kyle Hannabass, M.D.Otolaryngology Physician1154784866
Verify Benjamin M. Loos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71850Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% more Medicare Part D claims than the average otolaryngology physician in 2024
1,004 Medicare Part D claims for 430 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Pantoprazole Sodium200 claims
- Azelastine Hcl182 claims
- Ipratropium Bromide75 claims
- Ofloxacin73 claims
- Fluticasone Propionate72 claims
- Mupirocin59 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): 96 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).
Bills Medicare through one group practice
- Bass Medical GroupAlamo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin M. Loos among 1,212 otolaryngology physician records in California
Benjamin M. Loos, MD is one of 1,212 otolaryngology physician records with a practice address in California. 80% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1997 · median 2004 among the 818 with a school on file
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Walnut Creek → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Erica Bennett, MDWalnut Creek, CA 945981164438875
- Pamela Bohrer, MDWalnut Creek, CA 945981497839476
- Karen Fong, MDWalnut Creek, CA 945981548275068
- Kyle Hannabass, M.D.Walnut Creek, CA 945981154784866
- Abraham Hsieh, MDWalnut Creek, CA 945981679520076
- Jeehong Kim, M.DWalnut Creek, CA 945981629423140
- Michael Murphy, MDWalnut Creek, CA 945981013964410
- Timothy Scott, MDWalnut Creek, CA 945981760439160
Common questions
What is Benjamin M. Loos, MD's NPI number?
Benjamin M. Loos, MD's National Provider Identifier (NPI) is 1457441214, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin M. Loos, MD located?
The NPPES record lists a practice address at 365 Lennon LN Ste 280, Walnut Creek, CA, 94598. Phone: (925) 932-3112. Providers update this record themselves, so call before visiting.
How can I verify Benjamin M. Loos, MD's license?
NPPES lists California license number A71850, 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 Benjamin M. Loos, MD prescribe under Medicare Part D?
In 2024, Benjamin M. Loos, MD had 1,004 Medicare Part D claims for 430 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Benjamin M. Loos, MD's MIPS final score?
The 2023 MIPS final score is 96 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.