DR. GREGORY SALVATORE RIHACEK MD
NPI 1114992773
Internal Medicine - Rheumatology in Somerset, NJ

Q: What is Gregory Rihacek's NPI number?

The NPI number for Gregory Rihacek is 1114992773. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Q: What is Gregory Rihacek's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Rihacek was last updated on May 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 February 17, 2006PECOS EnrolledAccepts Medicare Assignment

23.37/100

CMS Quality Rating

19 CLYDE RD, #101, SOMERSET, NJ 08873(732) 568-0023(732) 568-0159 Get Directions Write a Review

NPPES record last updated: May 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Dr. Gregory Salvatore Rihacek Md NPPES

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

DR. GREGORY SALVATORE RIHACEK MD (NPI 1114992773) is an individual rheumatology provider in Somerset, New Jersey, licensed in New Jersey (25MA06373000) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Cooper University Hospital, and is a graduate of Rutgers R W Johnson Medical School (cam/new Bruns/pisc) (1982).

NPPES Registry Identity

NPI1114992773

Entity TypeIndividualMale

Primary Taxonomy207RR0500X

Provider Legal NameDR. GREGORY SALVATORE RIHACEKCredential: MD

Location Address19 CLYDE RD, #101Somerset, NJ 08873-5042

Mailing Address1 Federal St Ste 200Camden, NJ 08103-1088 · (848) 288-6935

Phone(732) 568-0023

Fax(732) 568-0159

Sole ProprietorNo

Medical School CMSRutgers R W Johnson Medical School (cam/new Bruns/pisc)Graduated 1982

Enumeration DateFebruary 17, 2006

Last NPPES UpdateMay 13, 2026

NPPES CertifiedMay 13, 2026

✔ NPI 1114992773 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

License✔ Licensed in NJ · 25MA06373000

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

19 CLYDE RD, Somerset, NJ 08873

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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. Gregory Salvatore Rihacek 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 ID5698710598

PECOS Enrollment IDI20050622000087

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 13

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.

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.

984 services300 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.

187 services87 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

75 services42 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

74 services35 patients

Red blood cell sedimentation rate, to detect inflammation, non-automated 85651

The Red Blood Cell Sedimentation Rate test measures how quickly red blood cells settle at the bottom of a test tube. If they settle faster than normal, it may indicate inflammation in the body. This test is non-automated, meaning it's manually performed by a lab technician.

73 services42 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.

69 services69 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

46 services17 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.

41 services22 patients

Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle 96401

This procedure involves giving anti-cancer drugs, which don't contain hormones, into the muscle or under the skin. These drugs help to stop the growth of cancer cells. The process is usually quick and done by a healthcare professional.

35 services20 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

35 services11 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

19 services11 patients

Manual urinalysis test with examination using microscope, non-automated 81000

A manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.

16 services15 patients

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

16 services13 patients

Hospital Affiliations CMS Care Compare 2

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

Cooper University Hospital

Acute Care Hospitals · Camden, NJ

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310014

Location1 Cooper PlazaCamden, NJ 08103 · Camden County

Emergency services Birthing friendly

Saint Peter's University Hospital

Acute Care Hospitals · New Brunswick, NJ

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310070

Location254 Easton AveNew Brunswick, NJ 08901 · Middlesex County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 08873 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.

23.37/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Improvement Activities

Cost

77.91

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JOHN D STROUMTSOS D.M.D.

Dentist (General Practice)

19 CLYDE RD, SUITE 102
SOMERSET, NJ 08873

Somerset County (732) 873-0055

ARTHRITIS CARE MEDICAL CENTER

Internal Medicine (Rheumatology)

19 CLYDE RD, 101
SOMERSET, NJ 08873

Somerset County (732) 568-0023

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 Gregory Rihacek's NPI number?

The NPI number for Gregory Rihacek is 1114992773. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Where is Gregory Rihacek located?

Gregory Rihacek practices at 19 Clyde Rd #101, Somerset, NJ 08873. The listed phone number is (732) 568-0023.

What is Gregory Rihacek's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Gregory Rihacek enrolled in Medicare?

Yes. Gregory Rihacek 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 Gregory Rihacek affiliated with any hospitals?

According to CMS data, Gregory Rihacek is affiliated with Cooper University Hospital and Saint Peter's University Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Rihacek was last updated on May 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.