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Active NPI 1811985203 Individual Practitioner Male Practitioner

Dr. Jon E Hershkowitz , MD

Internal Medicine • Summit, NJ

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Jon Hershkowitz, MD is a certified Internal Medicine practicing in Summit, NJ. With approximately 35 years of clinical experience since graduating from Hahneman Medical College Of The Pacific in 1991, Dr. Hershkowitz delivers high-quality medical care to the local community at 120 SUMMIT AVE.

Dr. Hershkowitz is affiliated with Barnabas Health Medical Group, Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include initial hospital care with moderate level of medical decision making, if using time, at least, initial hospital inpatient care per day, follow-up hospital inpatient care per day. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

120 Summit Ave
Summit Medical Group

Summit, NJ 079012804

Telephone 9082778880
Fax 9082778779
Associated Practice Facility / Clinic
🏢 Summit Medical Group Pa Facility NPI 1356903348

Medicare Profile & Education

Medical School

Hahneman Medical College Of The Pacific

Graduation Year

1991

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Summit, NJ

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
35 Yrs +15.1 yrs vs City Avg
City Avg: 19.9 Yrs
State Avg: 30.1 Yrs
Regional Practice Density
56 Specialists

Practicing in Summit, NJ (4957 Statewide)

Telehealth Adoption Rate
19.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
75.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Hershkowitz (35 Years) 35 Yrs
Summit Specialty Average (19.9 Years) 19.9 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
288 232 $735.00 $180.61
99221 Initial hospital inpatient care per day, typically 30 minutes
285 162 $352.00 $86.86
99231 Follow-up hospital inpatient care per day, typically 15 minutes
41 31 $210.00 $52.17
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
41 32 $555.00 $134.77
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
31 26 $335.00 $82.75

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License NJ MA69995

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.

Hospitalist

NUCC Taxonomy Code: 208M00000X

State License NJ MA69995

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Hospital & Practice Group Affiliations

Barnabas Health Medical Group, Pc

1691 Route 9, Toms River, NJ 087551245

Phone: 7329141688

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

36 Associated Practitioners
Dr. Eliezer Mordan , MD

Emergency Medicine

NPI 1003886516

Doctor of Medicine (M.D.)

Lauren Baron , PA

Physician Assistant - Medical

NPI 1023361201

Physician Assistant

Dr. Michael Passafaro , DO

Emergency Medicine

NPI 1033326640

Doctor of Osteopathic Medicine (D.O.)

Dr. John Koliopoulos , DO

Emergency Medicine

NPI 1053353516

Doctor of Osteopathic Medicine (D.O.)

Dr. Antonios Drivas , MD

Emergency Medicine

NPI 1083787485

Doctor of Medicine (M.D.)

Timothy Johnson

Emergency Medicine

NPI 1104129204

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active July 09, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 09, 2007

Registered at 120 SUMMIT AVE, SUMMIT MEDICAL GROUP, SUMMIT, NJ 079012804 (Tel: 9082778880)

📍
Updated Business Mailing Address July 09, 2007

Registered at 120 SUMMIT AVE, SUMMIT MEDICAL GROUP, SUMMIT, NJ 079012804 (Tel: 9082734300)

👤
Provider Name / Credentials Updated July 09, 2007

Recorded as JON HERSHKOWITZ, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 09, 2007

Internal Medicine (License #MA69995 in NJ)

🟢
Initial NPI Registration & Enumeration October 10, 2005

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: 1811985203
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 10, 2005
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

120 Summit Ave, Summit Medical Group

Summit, NJ 079012804

Phone: 9082734300

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.