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Deactivated NPI 1487796850 Deactivated / Inactive NPI Male Practitioner

Dr. Johnson C Chan , MD

Internal Medicine • Freeport, NY

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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. Johnson Chan has officially deactivated this NPI record and ceased active healthcare practice.

Registration / Start Date February 13, 2007
NPI Deactivation Date January 22, 2026
Total Practice Duration ~19 Years of Practice (2007 – 2026)

Professional Overview & Biography Verified Profile Summary

Dr. Johnson Chan, MD was a registered Internal Medicine practicing in Freeport, NY. Throughout an active medical career spanning 19 years, Dr. Chan provided care at the practice location at 190 W MERRICK ROAD until profile deactivation on 2026-01-22.

Historical Medicare Part B clinical services included established patient outpatient office visit. Public procedure reimbursement records and service volume details are provided below for historical transparency.

Practice Location & Contact Primary Location

Practice Address

190 W Merrick Road

Freeport, NY 11520

Telephone 5168688333
Fax 5168681053

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Freeport, NY

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 36.0 Yrs
State Avg: 29.4 Yrs
Regional Practice Density
15 Specialists

Practicing in Freeport, NY (12979 Statewide)

Telehealth Adoption Rate
20.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
4.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2017)
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes
72 13 $84.69 $80.51

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License NY NY125002

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 January 22, 2026

Record deactivated on January 22, 2026

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

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Updated Practice Location July 08, 2007

Registered at 190 W MERRICK ROAD, FREEPORT, NY 11520 (Tel: 5168688333)

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Updated Business Mailing Address July 08, 2007

Registered at 190 W MERRICK ROAD, FREEPORT, NY 11520 (Tel: 5168688333)

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Provider Name / Credentials Updated July 08, 2007

Recorded as JOHNSON CHAN, MD

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Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine (License #NY125002 in NY)

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Initial NPI Registration & Enumeration February 13, 2007

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: 1487796850
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 13, 2007
Last Update: July 08, 2007
Deactivation Date: January 22, 2026

Mailing Address

190 W Merrick Road

Freeport, NY 11520

Phone: 5168688333

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.