William Grubb, MD
NPI 1699857458 · Pain Medicine (Anesthesiology) Physician · New Brunswick, NJ
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Grubb, MD is a Pain Medicine (Anesthesiology) Physician provider in New Brunswick, NJ (NPI 1699857458).
Provider details
- NPI number
- 1699857458
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25MA06144200 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
311 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 101 | $195 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $98 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 40 | $44 |
| Anesthesia for Insertion of Permanent Heart Pacemaker00530 | 34 | $190 |
| Anesthesia for Procedure to Assess Heart Electrical Activity00537 | 28 | $351 |
| Anesthesia for X-Ray on Artery of Brain, Heart, Or Chest01926 | 27 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tizanidine Hcl | 304 | 66 |
| Gabapentin | 272 | 41 |
| Methadone Hcl | 238 | 22 |
| Pregabalin | 180 | 23 |
| Tramadol Hcl | 140 | 27 |
| Oxycodone Hcl | 104 | 16 |
| Cyclobenzaprine Hcl | 88 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$164 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-20
- Last updated
- 2024-05-20
- Certified
- 2024-05-20
Frequently asked questions
- What is William Grubb's NPI number?
- William Grubb's National Provider Identifier (NPI) is 1699857458, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Grubb's specialty?
- William Grubb is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is William Grubb located?
- William Grubb's practice location on file with NPPES is 1 Robert Wood Johnson Pl, New Brunswick, NJ 08901-1928.
- What is William Grubb's phone number?
- The practice phone number listed in the NPPES registry for William Grubb is (732) 937-8841.
- Does William Grubb accept Medicare?
- William Grubb is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Grubb's NPI active?
- Yes — William Grubb's NPI (1699857458) is active in the NPPES registry as of the last update on 2024-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.