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

Q: 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.

Q: What is Jon Hershkowitz's specialty?

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

Q: 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 3 months 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.

Active since October 10, 2005PECOS EnrolledAccepts Medicare Assignment

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: October 18, 2026.

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

On this page

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, billing reassignment, and ordering and referring status from CMS.

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.

Medicare Billing Reassignment

Medicare enrollment records show Jon Hershkowitz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Barnabas Health Medical Group, PC

4.2 mi

Specialist

95 OLD SHORT HILLS RD
West Orange, NJ 07052

Reassigned Medicare billing, New Jersey enrollment
757 clinicians in this Medicare group

NPI 1447206420 (888) 724-7123

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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

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

Southern Ocean Medical Center

Acute Care Hospitals · Manahawkin, NJ

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310113

Location1140 Rt 72 WManahawkin, NJ 08050 · Ocean 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

Quality

77.79

Promoting Interoperability

100

Improvement Activities

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.

Which organization bills Medicare for Jon Hershkowitz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jon Hershkowitz reassigns Medicare benefits to Barnabas Health Medical Group, PC (West Orange, NJ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jon Hershkowitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

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, Monmouth Medical Center-Southern Campus, Jfk Medical Center and Southern Ocean 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 3 months 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.