Meng-Fey Ferra Lin-Duffy, DO
Surgical Oncology Physician · S Pasadena, CA
Meng-Fey Ferra Lin-Duffy, DO is a surgical oncology physician with a practice address in S Pasadena, California, and NPI 1609108836, issued on Feb 15, 2010. Check the license (California 20A21268, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Meng-Fey Ferra Lin-Duffy
- Credential
- DO
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License numbers
- 20A21268 CA
DO2059 NV
Self-reported in NPPES; status is on the state search - Practice location
- 209 Fair Oaks Ave, S Pasadena, CA 91030
- Phone
- (626) 396-2900
- Enumerated
- Feb 15, 2010
- Record last updated
- Sep 13, 2024
- Fax
- (626) 799-2889
- Medicare enrollment
- Enrolled (PECOS I20240821002661); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 250 in California → Look up another NPI →
Verify Meng-Fey Ferra Lin-Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21268Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average surgical oncology physician in 2024
65 Medicare Part D claims for 25 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 21 claims were for opioids.
Most prescribed
- Tramadol Hcl21 claims
- Ibuprofen17 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): 41.7 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: $427.96
19 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. The 1,132 providers of this specialty with any payment received $4,224.74 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
- City OF Hope Medical FoundationSouth Pasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Meng-Fey Ferra Lin-Duffy among 250 surgical oncology physician records in California
Meng-Fey Ferra Lin-Duffy, DO is one of 250 surgical oncology physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 64% of them.
- NPI issued2010 · 64% of these records are older, 33% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2009 · median 2004 among the 184 with a school on file
- Record last updated2024 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 surgical oncology physician record lists a practice address in S Pasadena
They are 1 of the 32 NPPES records with a practice address in S Pasadena, and 250 surgical oncology physician records in California.
All 250 in California → Every provider in S Pasadena → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Aaron Lewis, MDSouth Pasadena, CA 910301053542100
- Amy Polverini, MDSouth Pasadena, CA 910301073760815
- Fairouz Chibane, MDDuarte, CA 910101255869962
- Sinziana Dumitra, M.D., MSC(EPI), FRCSDuarte, CA 910101770966178
- Preeti Farmah, MDDuarte, CA 910101457814808
- Nicole Hanson, DODuarte, CA 910101134749914
- Ryan Lamm, M.D.Duarte, CA 910101891228482
- Maithao Le, M.D.Duarte, CA 910101760613574
Common questions
What is Meng-Fey Ferra Lin-Duffy, DO's NPI number?
Meng-Fey Ferra Lin-Duffy, DO's National Provider Identifier (NPI) is 1609108836, issued on Feb 15, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Meng-Fey Ferra Lin-Duffy, DO located?
The NPPES record lists a practice address at 209 Fair Oaks Ave, S Pasadena, CA, 91030. Phone: (626) 396-2900. Providers update this record themselves, so call before visiting.
How can I verify Meng-Fey Ferra Lin-Duffy, DO's license?
NPPES lists California license number 20A21268, 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 Meng-Fey Ferra Lin-Duffy, DO prescribe under Medicare Part D?
In 2024, Meng-Fey Ferra Lin-Duffy, DO had 65 Medicare Part D claims for 25 beneficiaries; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.
What is Meng-Fey Ferra Lin-Duffy, DO's MIPS final score?
The 2023 MIPS final score is 41.7 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.