NPPES file of Aug 9, 2026

William Grubb, MD

Pain Medicine (Anesthesiology) Physician · New Brunswick, NJ

William Grubb, MD is a pain medicine (anesthesiology) physician with a practice address in New Brunswick, New Jersey, and NPI 1699857458, issued on Oct 20, 2006. Check the license (New Jersey 25MA06144200, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1699857458
Name
William Grubb
Credential
MD
Primary taxonomy
Pain Medicine (Anesthesiology) Physician 207LP2900X
License number
25MA06144200 NJ
Self-reported in NPPES; status is on the state search
Practice location
1 Robert Wood Johnson PL, New Brunswick, NJ 08901
Phone
(732) 937-8841
Enumerated
Oct 20, 2006
Record last updated
May 20, 2024
Fax
(732) 418-8492
Medicaid ID
1830210 NJ
Medicare enrollment
Enrolled (PECOS I20101118000718); accepts Medicare assignment
Medical or professional school
George Washington University School Of Medicine, 1985
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest pain medicine (anesthesiology) physician records → All 155 in New Jersey → Look up another NPI →

Also registered at 1 Robert Wood Johnson PL

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eunice Abogado, DNPCritical Care Medicine Nurse Practitioner1518838960
  2. Jessica AboloffStudent in an Organized Health Care Education/Training Program1457110975
  3. Heba Abulsheour, MDNeonatal-Perinatal Medicine Physician1134781339
  4. Ifeoluwa AdedejiAcute Care Nurse Practitioner1598315210
  5. Hiba Adina, PATIENT MONITOROther Technician1093337347
  6. Richard Agag, MDPlastic Surgery Physician1497937486

Verify William Grubb in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
    Search for license 25MA06144200    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Jersey license search

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11% more Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024

1,935 Medicare Part D claims for 133 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. 531 claims were for opioids.

  1. William Grubb1,935
  2. Specialty average1,750

Most prescribed

  1. Tizanidine Hcl304 claims
  2. Gabapentin272 claims
  3. Methadone Hcl238 claims
  4. Pregabalin180 claims
  5. Tramadol Hcl140 claims
  6. Oxycodone Hcl104 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: $164.20

5 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 2,789 providers of this specialty with any payment received $3,225.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Grubb$164.20
  2. Specialty average$3,225.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Rutgers Health-Rwj Pediatric Critical CareNew Brunswick, NJ
  2. Rutgers Health-Rwj Scleroderma ProgramNew Brunswick, NJ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Grubb among 155 pain medicine (anesthesiology) physician records in New Jersey

William Grubb, MD is one of 155 pain medicine (anesthesiology) physician records with a practice address in New Jersey. 88% 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 11% of them.

  • NPI issued2006 · 11% of these records are older, 51% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated1985 · median 2002 among the 116 with a school on file
  • Record last updated2024 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pain Medicine (Anesthesiology) Physician providers in New Jersey

There are 155 pain medicine (anesthesiology) physician records in New Jersey.

All 155 in New Jersey → Every provider in New Brunswick → Pain Medicine (Anesthesiology) Physician nationwide →

The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes

  1. Candy Bonsu, M.D.New Brunswick, NJ 089011972763548
  2. Garen Gajian, MDNew Brunswick, NJ 089011417928789
  3. Shihlong Yeh, MDNew Brunswick, NJ 089011376975805
  4. Cheh Lu, D.O.New Brunswick, NJ 089021144370057
  5. Prajakta Avhad, M.D.Somerset, NJ 088731861709156
  6. Gary Vorsanger, MDRaritan, NJ 088691972631828
  7. Savion Johnson, MDPhillipsburg, NJ 088651366947046
  8. Amit Poonia, M.D.Old Bridge, NJ 088571780904359

Common questions

What is William Grubb, MD's NPI number?

William Grubb, MD's National Provider Identifier (NPI) is 1699857458, issued on Oct 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Grubb, MD located?

The NPPES record lists a practice address at 1 Robert Wood Johnson PL, New Brunswick, NJ, 08901. Phone: (732) 937-8841. Providers update this record themselves, so call before visiting.

How can I verify William Grubb, MD's license?

NPPES lists New Jersey license number 25MA06144200, 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 William Grubb, MD prescribe under Medicare Part D?

In 2024, William Grubb, MD had 1,935 Medicare Part D claims for 133 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.