Claire Nathalie Grigaux, M.D.
Internal Medicine Physician · Union, NJ
Claire Nathalie Grigaux, M.D. is an internal medicine physician with a practice address in Union, New Jersey, and NPI 1992883557, issued on Nov 1, 2006. Check the license (New Jersey 25MA08546700, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Claire Nathalie Grigaux
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 25MA08546700 NJ
A83392 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Galloping Hill Road, Union, NJ 07083
- Phone
- (908) 598-6655
- Enumerated
- Nov 1, 2006
- Record last updated
- Nov 23, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (908) 686-8374
- Medicaid ID
- 00A833920 CA
- Medicare enrollment
- Enrolled (PECOS I20150317001121); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1000 Galloping Hill Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victor Almeida, DOEmergency Medicine Physician1609810373
- Shailendra Bhatnagar, M.D.Emergency Medicine Physician1548229792
- Olufunmilayo Ilori, APNPsychiatric/Mental Health Nurse Practitioner1700142445
Verify Claire Nathalie Grigaux 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 25MA08546700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,723 Medicare Part D claims for 318 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium1,049 claims
- Amlodipine Besylate548 claims
- Levothyroxine Sodium548 claims
- Simvastatin334 claims
- Metformin Hcl331 claims
- Lisinopril283 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.
Industry payments in 2024: $43.45
2 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through one group practice
- Practice Associates Medical GroupMorristown, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
25 internal medicine physician records list a practice address in Union
They are 25 of the 1,094 NPPES records with a practice address in Union, and 4,632 internal medicine physician records in New Jersey.
All 25 in Union → All 4,632 in New Jersey → Every provider in Union →
Other internal medicine physician records in New Jersey
- Joseph Aaron, MD, FACPShort Hills, NJ1861584633
- Sirike Aasmaa, DOMontville, NJ1861549925
- Holly Abate Bersalona, M.D.Sea Girt, NJ1669500492
- Kaniz Zehra Abbas, MDTrenton, NJ1598253858
- Shahida Abbas, MDOld Bridge, NJ1023104098
- Shahed AbbasiNewark, NJ1477810752
- Samih Abbassi, MDWest Orange, NJ1750380358
- Somaya Abboud, MDWest Orange, NJ1326089004
- Hilal Abboushi, MDBloomfield, NJ1548378029
- Anthony Abbruzzi, D.O.Pleasantville, NJ1629034905
Common questions
What is Claire Nathalie Grigaux, M.D.'s NPI number?
Claire Nathalie Grigaux, M.D.'s National Provider Identifier (NPI) is 1992883557, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Claire Nathalie Grigaux, M.D. located?
The NPPES record lists a practice address at 1000 Galloping Hill Road, Union, NJ, 07083. Phone: (908) 598-6655. Providers update this record themselves, so call before visiting.
How can I verify Claire Nathalie Grigaux, M.D.'s license?
NPPES lists New Jersey license number 25MA08546700, 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 Claire Nathalie Grigaux, M.D. prescribe under Medicare Part D?
In 2024, Claire Nathalie Grigaux, M.D. had 6,723 Medicare Part D claims for 318 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.