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DR. MICHAEL DREW DUFFIN M.D.
NPI 1578587309
Internal Medicine - Rheumatology in Torrance, CA

Active since July 26, 2006PECOS EnrolledAccepts Medicare Assignment
3565 DEL AMO BLVD, TORRANCE, CA 90503(310) 214-0811(310) 793-4679 Get Directions Write a Review

NPPES record last updated: November 5, 2012. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Michael Drew Duffin M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MICHAEL DREW DUFFIN M.D. (NPI 1578587309) is an individual rheumatology provider in Torrance, California, licensed in California (G063443) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Sky Lakes Medical Center, and is a graduate of Other (1986).

NPPES Registry Identity

NPI1578587309
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameDR. MICHAEL DREW DUFFINCredential: M.D.
Location Address3565 DEL AMO BLVDTorrance, CA 90503-1637
Mailing Address3565 Del Amo BlvdTorrance, CA 90503-1637 · (310) 214-0811 · Fax (310) 793-4679
Phone(310) 214-0811
Fax(310) 793-4679
Sole ProprietorYes
Medical School CMSOtherGraduated 1986
Enumeration DateJuly 26, 2006
Last NPPES UpdateNovember 5, 2012
✔ NPI 1578587309 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · G063443
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
3565 DEL AMO BLVD, Torrance, CA 90503
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Other Identifiers 1

Medicare UPINF82273CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Michael Drew Duffin M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072555390
PECOS Enrollment IDI20190328002997
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
332 services228 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
210 services159 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
151 services116 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
45 services45 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
31 services31 patients
Aspiration and/or injection of fluid from large joint 20610
This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
26 services15 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sky Lakes Medical Center

Acute Care Hospitals · Klamath Falls, OR
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380050
Location2865 Daggett AvenueKlamath Falls, OR 97601 · Klamath County
Emergency services

Lake District Hospital

Critical Access Hospitals · Lakeview, OR
OwnershipGovernment - Hospital District or Authority
CMS Certification Number381309
Location700 South J StreetLakeview, OR 97630 · Lake County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ERIKA JOYCE KALASH D.O.
Internal Medicine
3565 DEL AMO BLVD
TORRANCE, CA 90503
Los Angeles County (310) 214-0811
DR. RICHARD ALAN YAMAMOTO M.D.
Dermatology
3565 DEL AMO BLVD, 3RD FLOOR DERMATOLOGY
TORRANCE, CA 90503
Los Angeles County (310) 214-0811
AASHINI SHAH M.D.
Hospitalist
3565 DEL AMO BLVD
TORRANCE, CA 90503
Los Angeles County (714) 443-4512
HEALTH CARE PARTNERS, INC..
Non-Pharmacy Dispensing Site
3565 DEL AMO BLVD
TORRANCE, CA 90503
Los Angeles County (310) 214-0811
MS. ADRIANA LANIZA MONTELLANO NATIVIDAD CERTIFIED OPTICIAN
Technician/Technologist (Contact Lens)
3565 DEL AMO BLVD
TORRANCE, CA 90503
Los Angeles County (310) 214-0811
NARGES JELODARI MD
Pediatrics
3565 DEL AMO BLVD
TORRANCE, CA 90503
Los Angeles County (310) 214-0811
ANITA BHAGAVATH M.D
Internal Medicine (Pulmonary Disease)
3565 DEL AMO BLVD
TORRANCE, CA 90503
Los Angeles County (702) 579-3203
ENERGY FARM INC
Pharmacist
3565 DEL AMO BLVD
TORRANCE, CA 90503
Los Angeles County (310) 370-0911

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Duffin's NPI number?

The NPI number for Michael Duffin is 1578587309. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is Michael Duffin located?

Michael Duffin practices at 3565 Del Amo Blvd, Torrance, CA 90503. The listed phone number is (310) 214-0811.

What is Michael Duffin's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Michael Duffin enrolled in Medicare?

Yes. Michael Duffin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Michael Duffin accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., Providence Health Plan and Regence BlueCross BlueShield of Oregon list Michael Duffin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Michael Duffin affiliated with any hospitals?

According to CMS data, Michael Duffin is affiliated with Sky Lakes Medical Center and Lake District Hospital.

When was this NPI record last updated?

The NPPES record for Michael Duffin was last updated on November 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.