Michael T. Duffy, M.D.
Specialist · Beverly Hills, CA
Michael T. Duffy, M.D. is a specialist with a practice address in Beverly Hills, California, and NPI 1689635328, issued on Mar 31, 2006. Check the license (California G59599, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael T. Duffy
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G59599 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9400 Brighton Way, Beverly Hills, CA 90210
- Phone
- (310) 271-6229
- Enumerated
- Mar 31, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (310) 271-9139
- Medicaid ID
- 00G595992 CA
- Medicare enrollment
- Enrolled (PECOS I20040929000205); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1985
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 9400 Brighton Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael T. Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G59599Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average specialist in 2024
3,021 Medicare Part D claims for 241 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 48 claims were for opioids.
Most prescribed
- Atorvastatin Calcium317 claims
- Levothyroxine Sodium112 claims
- Rosuvastatin Calcium103 claims
- Amlodipine Besylate97 claims
- Olmesartan Medoxomil87 claims
- Eliquis77 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): 8.1 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: $1,100.04
48 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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.
Michael T. Duffy among 5,749 specialist records in California
Michael T. Duffy, M.D. is one of 5,749 specialist records with a practice address in California. 30% 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, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1985 · median 1989 among the 1,075 with a school on file
- Record last updated2026 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
107 specialist records list a practice address in Beverly Hills
They are 107 of the 3,433 NPPES records with a practice address in Beverly Hills, and 5,749 specialist records in California.
All 5,749 in California → Every provider in Beverly Hills → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Susan Baker, M.D.Beverly Hills, CA 902101912901448
- Andre Berger, M.D.Beverly Hills, CA 902101255313524
- Rodney Bluestone, M.D.Beverly Hills, CA 902101861496382
- Lisa Cassileth, MDBeverly Hills, CA 902101407858459
- Christine Collins, MDBeverly Hills, CA 902101376554139
- Partice Healey, M.D.Beverly Hills, CA 902101588747653
- Ann Hofstadter, MDBeverly Hills, CA 902101003827718
- Michelle Israel, MDBeverly Hills, CA 902101386656635
Common questions
What is Michael T. Duffy, M.D.'s NPI number?
Michael T. Duffy, M.D.'s National Provider Identifier (NPI) is 1689635328, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael T. Duffy, M.D. located?
The NPPES record lists a practice address at 9400 Brighton Way, Beverly Hills, CA, 90210. Phone: (310) 271-6229. Providers update this record themselves, so call before visiting.
How can I verify Michael T. Duffy, M.D.'s license?
NPPES lists California license number G59599, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael T. Duffy, M.D. prescribe under Medicare Part D?
In 2024, Michael T. Duffy, M.D. had 3,021 Medicare Part D claims for 241 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Michael T. Duffy, M.D.'s MIPS final score?
The 2023 MIPS final score is 8.1 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.