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MATTHEW DUFF
NPI 1558909226
Nurse Practitioner - Family in Redlands, CA

Active since December 12, 2019PECOS EnrolledAccepts Medicare Assignment
2 W FERN AVE, REDLANDS, CA 92373(909) 335-4102 Get Directions Write a Review

NPPES record last updated: November 16, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 16, 2025, Dec 14, 2020, Dec 17, 2019 and 1 more (4 updates tracked since 2019).

About Matthew Duff NPPES

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

MATTHEW DUFF (NPI 1558909226) is an individual family provider in Redlands, California, licensed in California (95013312) and active in the NPI registry since December 2019. He is enrolled in Medicare PECOS, maintains a secondary practice location in Upland, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1558909226
Entity TypeIndividualMale
Primary Taxonomy363LF0000X
Provider Legal NameMATTHEW DUFF
Location Address2 W FERN AVERedlands, CA 92373-5916
Mailing AddressPo Box 35380Las Vegas, NV 89133-5380 · (702) 579-3203
Phone(909) 335-4102
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateDecember 12, 2019
Last NPPES UpdateNovember 16, 20254 updates tracked since enumeration
NPPES CertifiedNovember 16, 2025
✔ NPI 1558909226 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in CA · 95013312
2 W FERN AVE, Redlands, CA 92373
Open in Google Maps ↗

Secondary Practice Location 1

Location 11113 Alta Ave Ste 220Upland, CA 91786-2803 · Phone (909) 985-1908

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Matthew Duff 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 ID1052771227
PECOS Enrollment IDI20230719002765
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Matthew Duff reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Beaver Medical Group P C
1.0 mi
Family Medicine
2 WEST FERN AVENUE
Redlands, CA 92373
  • Reassigned Medicare billing, California enrollment
  • 635 clinicians in this Medicare group
NPI 1649503319 (909) 793-3311
Redlands Family Practice Medical Group Inc.
1.9 mi
Family Medicine
1520 BARTON RD
Redlands, CA 92373
  • Reassigned Medicare billing, California enrollment
  • 29 clinicians in this Medicare group
NPI 1942482021 (909) 793-3208
Healthcare Partners Affiliates Medical Group
44 mi
Addiction Medicine
14591 NEWPORT AVE
Tustin, CA 92780
  • Reassigned Medicare billing, California enrollment
  • 2,052 clinicians in this Medicare group
NPI 1891981502 (714) 442-4864

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92373 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
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

CYNTHIA L PACHECO AGACNP
Nurse Practitioner (Acute Care)
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 793-3311
MRS. LISA C ANDERSON N.P.
Nurse Practitioner
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 793-3311
MR. LUIS A SANCHEZ DO
Anesthesiology
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 793-3311
MADISON TUCKER ZAGURSKI PA-C
Physician Assistant (Medical)
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 792-2605
DR. BRADLEY BASINGER M.D.
Surgery
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 793-3311
JOHN W MORTENSEN M.D.
Radiology (Diagnostic Radiology)
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 793-3311
NARMISHA VIJAY PATEL M.D
Hospitalist
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 583-2741
DR. KEVIN JAN CHAN MD
Hospitalist
2 W FERN AVE
REDLANDS, CA 92373
San Bernardino County (909) 793-3311

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 Matthew Duff's NPI number?

The NPI number for Matthew Duff is 1558909226. It was assigned to this individual provider in the NPPES registry on December 12, 2019.

Where is Matthew Duff located?

Matthew Duff practices at 2 W Fern Ave, Redlands, CA 92373. The listed phone number is (909) 335-4102.

What is Matthew Duff's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Matthew Duff enrolled in Medicare?

Yes. Matthew Duff 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.

Which organizations bill Medicare for Matthew Duff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Duff reassigns Medicare benefits to 3 organizations: Beaver Medical Group P C (Redlands, CA), Redlands Family Practice Medical Group Inc. (Redlands, CA) and Healthcare Partners Affiliates Medical Group (Tustin, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Matthew Duff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Matthew Duff was last updated on November 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.