Matthew Duff
Family Nurse Practitioner · Redlands, CA
Matthew Duff is a family nurse practitioner with a practice address in Redlands, California, and NPI 1558909226, issued on Dec 12, 2019. Check the license (California 95013312, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew Duff
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95013312 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 W Fern Ave, Redlands, CA 92373
- Phone
- (909) 335-4102
- Enumerated
- Dec 12, 2019
- Record last updated
- Nov 16, 2025
- Medicare enrollment
- Enrolled (PECOS I20230719002765); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 2 W Fern Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Arun Agrawal, D.O.Anesthesiology Physician1184677650
- Amanda Aguilera, M.D.Diagnostic Radiology Physician1679782049
- Onyinye Ahamba, M.DHospitalist Physician1164835237
Verify Matthew Duff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95013312Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average family nurse practitioner in 2024
1,787 Medicare Part D claims for 291 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium152 claims
- Losartan Potassium100 claims
- Amlodipine Besylate82 claims
- Levothyroxine Sodium81 claims
- Metformin Hcl80 claims
- Lisinopril66 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.
Industry payments in 2024: $15.51
1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 99,489 providers of this specialty with any payment received $650.95 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
- Beaver Medical Group P CRedlands, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Duff among 16,966 family nurse practitioner records in California
Matthew Duff is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 50% of them.
- NPI issued2019 · 50% of these records are older, 44% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2019 · median 2019 among the 6,793 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
62 family nurse practitioner records list a practice address in Redlands
They are 62 of the 2,498 NPPES records with a practice address in Redlands, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Redlands → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Kellie Allen, FNPRedlands, CA 923731952612368
- Megan Anderson, FNPRedlands, CA 923731528442977
- Natalie Arias, FNP-CRedlands, CA 923731205125002
- David Brandt, NPRedlands, CA 923731952845364
- Seth Chelliah, MSN, PHN, RN, FNP-CRedlands, CA 923731497126197
- Jamie Howder, NURSE PRACTITONERRedlands, CA 923731457673337
- Dayna Kringlen, A.P.R.N.Redlands, CA 923731295027019
- Rachel Lewis, FNPRedlands, CA 923731548681075
Common questions
What is Matthew Duff's NPI number?
Matthew Duff's National Provider Identifier (NPI) is 1558909226, issued on Dec 12, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Duff located?
The NPPES record lists a practice address at 2 W Fern Ave, Redlands, CA, 92373. Phone: (909) 335-4102. Providers update this record themselves, so call before visiting.
How can I verify Matthew Duff's license?
NPPES lists California license number 95013312, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew Duff prescribe under Medicare Part D?
In 2024, Matthew Duff had 1,787 Medicare Part D claims for 291 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
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.