Meng-Fey Lin-Duffy, DO
NPI 1609108836 · Surgical Oncology Physician · S Pasadena, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Meng-Fey Lin-Duffy, DO is a Surgical Oncology Physician provider in S Pasadena, CA (NPI 1609108836).
Provider details
- NPI number
- 1609108836
- Entity type
- Individual
- Primary specialty
- Surgical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A21268 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
352 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 36 | $221 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $178 |
| Repair of Wound By Transferring Skin, 30.1-60.0 Sq Cm14301 | 31 | $693 |
| X-Ray of Surgical Specimen76098 | 30 | $15 |
| Partial Removal of Breast19301 | 27 | $405 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tramadol Hcl | 21 | 20 |
| Ibuprofen | 17 | 15 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$428 across 19 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-02-15
- Last updated
- 2024-09-13
- Certified
- 2024-09-13
Frequently asked questions
- What is Meng-Fey Lin-Duffy's NPI number?
- Meng-Fey Lin-Duffy's National Provider Identifier (NPI) is 1609108836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Meng-Fey Lin-Duffy's specialty?
- Meng-Fey Lin-Duffy is listed in the NPPES registry with a primary specialty of Surgical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Meng-Fey Lin-Duffy located?
- Meng-Fey Lin-Duffy's practice location on file with NPPES is 209 Fair Oaks Ave, S Pasadena, CA 91030-1814.
- What is Meng-Fey Lin-Duffy's phone number?
- The practice phone number listed in the NPPES registry for Meng-Fey Lin-Duffy is (626) 396-2900.
- Does Meng-Fey Lin-Duffy accept Medicare?
- Meng-Fey Lin-Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Meng-Fey Lin-Duffy's NPI active?
- Yes — Meng-Fey Lin-Duffy's NPI (1609108836) is active in the NPPES registry as of the last update on 2024-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.