JILLIAN M DIIONNO PA-C
NPI 1194167577
Physician Assistant in Hackettstown, NJ

Q: What is Jillian Diionno's NPI number?

The NPI number for Jillian Diionno is 1194167577. It was assigned to this individual provider in the NPPES registry on July 25, 2013. The provider is also known as Jillian Merrell Pa-C.

Q: What is Jillian Diionno's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Q: When was this NPI record last updated?

The NPPES record for Jillian Diionno was last updated on July 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 July 25, 2013PECOS EnrolledAccepts Medicare Assignment

57 ROUTE 46 STE 107, HACKETTSTOWN, NJ 07840(908) 813-9700(908) 813-2861 Get Directions Write a Review

NPPES record last updated: July 9, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 9, 2025, Mar 17, 2018, Feb 12, 2018 (3 updates tracked since 2018).

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About Jillian M Diionno Pa-c NPPES

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

JILLIAN M DIIONNO PA-C (NPI 1194167577) is an individual physician assistant in Hackettstown, New Jersey, licensed in New Jersey (25MP00312100) and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS, is affiliated with St Luke's Warren Hospital, and maintains a secondary practice location in Bedminster.

NPPES Registry Identity

NPI1194167577

Entity TypeIndividualFemale

Primary Taxonomy363A00000X

Provider Legal NameJILLIAN M DIIONNOCredential: PA-C

Location Address57 ROUTE 46 STE 107Hackettstown, NJ 07840-2695

Mailing Address90 Matawan Rd Ste 302Matawan, NJ 07747-2653 · (732) 441-7177 · Fax (732) 441-7165

Phone(908) 813-9700

Fax(908) 813-2861

Sole ProprietorNo

Medical School CMSOtherGraduated 2013

Enumeration DateJuly 25, 2013

Last NPPES UpdateJuly 9, 20253 updates tracked since enumeration

NPPES CertifiedJuly 9, 2025

✔ NPI 1194167577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363A00000X

License✔ Licensed in NJ · 25MP00312100

Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

57 ROUTE 46 STE 107, Hackettstown, NJ 07840

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Other Names 1

Former Name (1)Jillian Merrell Pa-c

Secondary Practice Location 1

Location 11 Robertson Dr Ste 11Bedminster, NJ 07921-1716 · Phone (908) 813-9700 · Fax (908) 813-2861

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

Jillian M Diionno Pa-c 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 ID7214150481

PECOS Enrollment IDI20140516000866

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 12

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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

279 services89 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

169 services108 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

148 services82 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

123 services90 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

113 services69 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

37 services33 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

32 services25 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

28 services28 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

25 services20 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

25 services22 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

23 services15 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

21 services21 patients

Hospital Affiliations CMS Care Compare 2

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

St Luke's Warren Hospital

Acute Care Hospitals · Phillipsburg, NJ

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310060

Location185 Roseberry StPhillipsburg, NJ 08865 · Warren County

Emergency services

Hackettstown Medical Center

Acute Care Hospitals · Hackettstown, NJ

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310115

Location651 Willow Grove StHackettstown, NJ 07840 · Warren County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07840 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

$98.09 typical visit price

range $63.84 – $190.92

Typical copayment $24.52 (range $15.96 – $47.73)

Most-billed visit code 99203

Established Patient

$79.09 typical visit price

range $20.97 – $155.92

Typical copayment $19.77 (range $5.24 – $38.98)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Jillian Diionno's NPI number?

The NPI number for Jillian Diionno is 1194167577. It was assigned to this individual provider in the NPPES registry on July 25, 2013. The provider is also known as Jillian Merrell Pa-C.

Where is Jillian Diionno located?

Jillian Diionno practices at 57 Route 46 Ste 107, Hackettstown, NJ 07840. The listed phone number is (908) 813-9700.

What is Jillian Diionno's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Jillian Diionno enrolled in Medicare?

Yes. Jillian Diionno 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.

Is Jillian Diionno affiliated with any hospitals?

According to CMS data, Jillian Diionno is affiliated with St Luke's Warren Hospital and Hackettstown Medical Center.

When was this NPI record last updated?

The NPPES record for Jillian Diionno was last updated on July 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.