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Deactivated NPI 1689124604 Deactivated / Inactive NPI Male Practitioner

Dr. John Duff , MD

Internal Medicine • Springfield, MO

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Notice of NPI Deactivation & Inactive Practice Status

According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Dr. John Duff has officially deactivated this NPI record and ceased active healthcare practice.

Registration / Start Date October 13, 2016
NPI Deactivation Date December 25, 2025
Total Practice Duration ~9 Years of Practice (2016 – 2025)

Professional Overview & Biography Verified Profile Summary

Dr. John Duff, MD was a registered Internal Medicine practicing in Springfield, MO. Throughout an active medical career spanning 9 years, Dr. Duff provided care at the practice location at 2909 S CAMBER AVE until profile deactivation on 2025-12-25.

Practice Location & Contact Primary Location

Practice Address

2909 S Camber Ave

Springfield, MO 658093547

Telephone 4178186959

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Springfield, MO

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 22.2 Yrs
State Avg: 25.5 Yrs
Regional Practice Density
147 Specialists

Practicing in Springfield, MO (2747 Statewide)

Telehealth Adoption Rate
12.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MO 36277

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

7 Historical Events
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NPI Profile Deactivated December 25, 2025

Record deactivated on December 25, 2025

NPI Profile Active October 13, 2016

NPI status registered as active in NPPES database

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Updated Practice Location October 13, 2016

Registered at 2909 S CAMBER AVE, SPRINGFIELD, MO 658093547 (Tel: 4178186959)

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Updated Business Mailing Address October 13, 2016

Registered at 2909 S CAMBER AVE, SPRINGFIELD, MO 658093547 (Tel: 4178186959)

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Provider Name / Credentials Updated October 13, 2016

Recorded as JOHN DUFF, MD

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Medical Taxonomy / Specialty Registered (Primary Specialty) October 13, 2016

Internal Medicine (License #36277 in MO)

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Initial NPI Registration & Enumeration October 13, 2016

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1689124604
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 13, 2016
Last Update: October 13, 2016
Deactivation Date: December 25, 2025

Mailing Address

2909 S Camber Ave

Springfield, MO 658093547

Phone: 4178186959

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.