What is Brian Duff's NPI number?

Brian Duff's National Provider Identifier (NPI) is 1447411145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Brian Duff's specialty?

Brian Duff is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Brian Duff located?

Brian Duff's practice location on file with NPPES is 501 N Old Wilderness Rd, Nixa, MO 65714-9490.

What is Brian Duff's phone number?

The practice phone number listed in the NPPES registry for Brian Duff is (417) 269-2227.

Does Brian Duff accept Medicare?

Brian Duff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Brian Duff's NPI active?

Yes — Brian Duff's NPI (1447411145) is active in the NPPES registry as of the last update on 2025-05-12.

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Brian Duff, MD

NPI 1447411145 · Family Medicine Physician · Nixa, MO

Brian Duff, MD is a Family Medicine Physician provider in Nixa, MO (NPI 1447411145).

Provider details

NPI number: 1447411145
Entity type: Individual
Primary specialty: Family Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 2011011353 (MO)

Practice location

501 N Old Wilderness Rd

Nixa, MO 65714-9490

Phone: (417) 269-2227

Fax: (417) 269-2235

Street-level locationGet directions

More MO providers

Mailing address

Po Box 4046

Springfield, MO 65808-4046

Specialties & taxonomies

Family Medicine PhysicianPrimary207Q00000XLicense 2011011353 (MO)
Allopathic & Osteopathic Physicians
Family Medicine Physician207Q00000XLicense TRN12304 (FL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(75/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
18 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
924 Medicare services, 2024 (ranked within specialty)

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 methodology.

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)
Insertion of Needle Into Vein for Collection of Blood Sample36415	351	$9
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	210	$117
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	193	$119
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	80	$84
Aspiration And/Or Injection of Fluid From Large Joint20610	24	$58
Administration of Influenza Virus VaccineG0008

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 184 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	1,073	299
Lisinopril	733	190
Amlodipine Besylate	731	191
Losartan Potassium	560	150
Gabapentin	557	127
Levothyroxine Sodium	557	143
Tramadol Hcl

Enumerated: 2008-06-24
Last updated: 2025-05-12
Certified: 2025-05-12

Frequently asked questions

What is Brian Duff's NPI number?: Brian Duff's National Provider Identifier (NPI) is 1447411145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Brian Duff's specialty?: Brian Duff is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Brian Duff located?: Brian Duff's practice location on file with NPPES is 501 N Old Wilderness Rd, Nixa, MO 65714-9490.
What is Brian Duff's phone number?: The practice phone number listed in the NPPES registry for Brian Duff is (417) 269-2227.
Does Brian Duff accept Medicare?: Brian Duff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Brian Duff's NPI active?: Yes — Brian Duff's NPI (1447411145) is active in the NPPES registry as of the last update on 2025-05-12.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)