Gregory Salvatore Rihacek, MD
Rheumatology Physician · Somerset, NJ
Gregory Salvatore Rihacek, MD is a rheumatology physician with a practice address in Somerset, New Jersey, and NPI 1114992773, issued on Feb 17, 2006. Check the license (New Jersey 25MA06373000, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory Salvatore Rihacek
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 25MA06373000 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 19 Clyde RD, Somerset, NJ 08873
- Phone
- (732) 568-0023
- Enumerated
- Feb 17, 2006
- Record last updated
- May 13, 2026
- Fax
- (732) 568-0159
- Medicare enrollment
- Enrolled (PECOS I20050622000087); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 1982
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 253 in New Jersey → Look up another NPI →
Also registered at 19 Clyde RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Stroumtsos, D.M.D.General Practice Dentistry1104900992
Verify Gregory Salvatore Rihacek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA06373000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average rheumatology physician in 2024
5,200 Medicare Part D claims for 388 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 937 claims were for opioids.
Most prescribed
- Prednisone359 claims
- Oxycodone Hcl202 claims
- Hydroxychloroquine Sulfate189 claims
- Oxycodone-Acetaminophen167 claims
- Tramadol Hcl140 claims
- Meloxicam134 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 23.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $14,749.99
235 payments; by number, the most common kind was food and beverage; the largest payer was Ani Pharmaceuticals, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gregory Salvatore Rihacek among 253 rheumatology physician records in New Jersey
Gregory Salvatore Rihacek, MD is one of 253 rheumatology physician records with a practice address in New Jersey. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 54% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1982 · median 2003 among the 190 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in New Jersey
There are 253 rheumatology physician records in New Jersey.
All 253 in New Jersey → Every provider in Somerset → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Sergio Corrales, DOSomerset, NJ 088731821670696
- Moti Tiku, MDSomerset, NJ 088731780758763
- Janak Goyal, M.D.Perth Amboy, NJ 088611417903477
- Wadie Toma, MDOld Bridge, NJ 088571821163437
- Lori Ann CoxNew Brunswick, NJ 089011437229143
- Vivien Hsu, MDNew Brunswick, NJ 089011992875421
- Pooja Jotwani, MBBSNew Brunswick, NJ 089011174083273
- Jammie Law, MDNew Brunswick, NJ 089011922503150
Common questions
What is Gregory Salvatore Rihacek, MD's NPI number?
Gregory Salvatore Rihacek, MD's National Provider Identifier (NPI) is 1114992773, issued on Feb 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Salvatore Rihacek, MD located?
The NPPES record lists a practice address at 19 Clyde RD, Somerset, NJ, 08873. Phone: (732) 568-0023. Providers update this record themselves, so call before visiting.
How can I verify Gregory Salvatore Rihacek, MD's license?
NPPES lists New Jersey license number 25MA06373000, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Salvatore Rihacek, MD prescribe under Medicare Part D?
In 2024, Gregory Salvatore Rihacek, MD had 5,200 Medicare Part D claims for 388 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Gregory Salvatore Rihacek, MD's MIPS final score?
The 2023 MIPS final score is 23.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.