Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1922332238 Individual Practitioner Male Practitioner

Dr. William Stuart Mainker , MD

Internal Medicine • Springfield, NJ

Professional Overview & Biography Verified Profile Summary

Dr. William Mainker, MD is a registered healthcare professional specializing in Internal Medicine in Springfield, NJ. Practice services are available at 18 OAK RDG under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

18 Oak Rdg

Springfield, NJ 070813719

Telephone 9082773675

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Springfield, NJ

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 31.6 Yrs
State Avg: 30.1 Yrs
Regional Practice Density
11 Specialists

Practicing in Springfield, NJ (4957 Statewide)

Telehealth Adoption Rate
18.2% 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 NJ 25MA02323400

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

6 Historical Events
NPI Profile Active September 21, 2009

NPI status registered as active in NPPES database

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Updated Practice Location September 21, 2009

Registered at 18 OAK RDG, SPRINGFIELD, NJ 070813719 (Tel: 9082773675)

📍
Updated Business Mailing Address September 21, 2009

Registered at 18 OAK RDG, SPRINGFIELD, NJ 070813719 (Tel: 9082773675)

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Provider Name / Credentials Updated September 21, 2009

Recorded as WILLIAM MAINKER, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 21, 2009

Internal Medicine (License #25MA02323400 in NJ)

🟢
Initial NPI Registration & Enumeration September 21, 2009

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: 1922332238
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 21, 2009
Last Update: September 21, 2009
Sole Proprietor: Yes

Mailing Address

18 Oak Rdg

Springfield, NJ 070813719

Phone: 9082773675

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.