Massoud Mahmoudi, D.O.
Allergy & Immunology Physician · Los Gatos, CA
Massoud Mahmoudi, D.O. is an allergy & immunology physician with a practice address in Los Gatos, California, and NPI 1255402640, issued on Nov 10, 2006. Check the license (California 20A7157, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Massoud Mahmoudi
- Credential
- D.O.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 20A7157 CA
Self-reported in NPPES; status is on the state search - Practice location
- 812 Pollard RD, Los Gatos, CA 95032
- Phone
- (408) 866-6885
- Enumerated
- Nov 10, 2006
- Record last updated
- Jan 19, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- 0020A71570 CA
- Medicare enrollment
- Enrolled (PECOS I20050128000916); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1994
- Entity
- Type 1 · individual
Also registered at 812 Pollard RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- James Mellema, MDSpecialist1376582528
- Jahanara Mortazavi, D.D.SGeneral Practice Dentistry1073670774
- Eric Olsen, PH.D.Clinical Psychologist1013033174
- Rosemary Wang, DDSGeneral Practice Dentistry1376762518
Verify Massoud Mahmoudi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7157Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
183 Medicare Part D claims for 33 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium20 claims
- Albuterol Sulfate Hfa16 claims
- Lisinopril13 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 practice group's MIPS final score for 2023 (Medicare payment program): 74.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $46.98
1 payment: food and beverage; the largest payer was Blueprint Medicines Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 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
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
Other allergy & immunology physician records in California
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- Seema Aceves, M.D., PH.D.San Diego, CA1366511628
- Terrie Ahn, MDSanta Monica, CA1093166795
- Rhonda Alkatib, M.D.San Diego, CA1417363086
- Mercedes Amado, M.D.San Diego, CA1477510287
- Loula Amin, M.D.Newport Beach, CA1043452782
- A Aminian, M.D.Fresno, CA1508080193
- Ali Amirzadeh, M.D.Sacramento, CA1083748685
- Lorraine Anderson, MDSanta Monica, CA1013209568
- Joshua Ang, DOPasadena, CA1699398016
Common questions
What is Massoud Mahmoudi, D.O.'s NPI number?
Massoud Mahmoudi, D.O.'s National Provider Identifier (NPI) is 1255402640, issued on Nov 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Massoud Mahmoudi, D.O. located?
The NPPES record lists a practice address at 812 Pollard RD, Los Gatos, CA, 95032. Phone: (408) 866-6885. Providers update this record themselves, so call before visiting.
How can I verify Massoud Mahmoudi, D.O.'s license?
NPPES lists California license number 20A7157, 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 Massoud Mahmoudi, D.O. prescribe under Medicare Part D?
In 2024, Massoud Mahmoudi, D.O. had 183 Medicare Part D claims for 33 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Massoud Mahmoudi, D.O.'s MIPS final score?
The 2023 MIPS final score is 74.5 of 100, reported for the practice group. 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.