1. Home
  2. Directory
  3. New Jersey
  4. Summit
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JON E HERSHKOWITZ MD
NPI 1811985203
Internal Medicine in Summit, NJ

Active since October 10, 2005PECOS Enrolled
93.71/100
CMS Quality Rating
120 SUMMIT AVE, SUMMIT MEDICAL GROUP, SUMMIT, NJ 07901(908) 277-8880(908) 277-8779 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Dr. Jon E Hershkowitz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JON E HERSHKOWITZ MD (NPI 1811985203) is an individual internal medicine provider in Summit, New Jersey, licensed in New Jersey (MA69995) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital, and is a graduate of Hahneman Medical College Of The Pacific (1991).

NPPES Registry Identity

NPI1811985203
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JON E HERSHKOWITZCredential: MD
Location Address120 SUMMIT AVE, SUMMIT MEDICAL GROUPSummit, NJ 07901-2804
Mailing Address120 Summit Ave, Summit Medical GroupSummit, NJ 07901-2804 · (908) 273-4300 · Fax (908) 790-6524
Phone(908) 277-8880
Fax(908) 277-8779
Sole ProprietorNo
Medical School CMSHahneman Medical College Of The PacificGraduated 1991
Enumeration DateOctober 10, 2005
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1811985203 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NJ · MA69995
Definition
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.
Also ListedHospitalistTaxonomy 208M00000X · License MA69995 (NJ)
120 SUMMIT AVE, Summit, NJ 07901
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Jon E Hershkowitz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638126212
PECOS Enrollment IDI20050406000028
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
288 services232 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
285 services162 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
41 services32 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
41 services31 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
31 services26 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Robert Wood Johnson University Hospital

Acute Care Hospitals · New Brunswick, NJ
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310038
LocationOne Robert Wood Johnson PlaceNew Brunswick, NJ 08901 · Middlesex County
Emergency services Birthing friendly

Community Medical Center

Acute Care Hospitals · Toms River, NJ
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310041
Location99 Rt 37 WestToms River, NJ 08755 · Ocean County
Emergency services Birthing friendly

Ocean Medical Center

Acute Care Hospitals · Brick, NJ
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number310052
Location425 Jack Martin BlvdBrick, NJ 08724 · Ocean County
Emergency services Birthing friendly

Monmouth Medical Center-Southern Campus

Acute Care Hospitals · Lakewood, NJ
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310084
Location600 River AveLakewood, NJ 08701 · Ocean County
Emergency services

Jfk Medical Center

Acute Care Hospitals · Edison, NJ
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310108
Location65 James StreetEdison, NJ 08820 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.86 typical visit price
range $63.84 – $190.92
Typical copayment $36.21 (range $15.96 – $47.73)
Most-billed visit code 99204
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.71/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality77.79
Promoting Interoperability100
Improvement Activities40

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jon Hershkowitz's NPI number?

The NPI number for Jon Hershkowitz is 1811985203. It was assigned to this individual provider in the NPPES registry on October 10, 2005.

Where is Jon Hershkowitz located?

Jon Hershkowitz practices at 120 Summit Ave Summit Medical Group, Summit, NJ 07901. The listed phone number is (908) 277-8880.

What is Jon Hershkowitz's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Jon Hershkowitz enrolled in Medicare?

Yes. Jon Hershkowitz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Jon Hershkowitz accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Jon Hershkowitz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Jon Hershkowitz affiliated with any hospitals?

According to CMS data, Jon Hershkowitz is affiliated with Robert Wood Johnson University Hospital, Community Medical Center, Ocean Medical Center, Monmouth Medical Center-Southern Campus and Jfk Medical Center.

When was this NPI record last updated?

The NPPES record for Jon Hershkowitz was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.