Quick answers
- Where does William E. Macmillan see patients?
- Medicare's clinician data lists 2 practice locations, including New Brunswick, NJ. Call before your visit to confirm the address.
- What is William E. Macmillan's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty, and also Pediatric Medicine.
- Does William E. Macmillan accept Medicare assignment?
- Yes. Medicare's clinician data says William E. Macmillan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for William E. Macmillan?
- (732) 828-3000, as listed in official Medicare / NPI Registry data.
- What is William E. Macmillan's NPI number?
- 1326015025. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William E. Macmillan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Robert Wood Johnson Pl, Rutgers Health Rwj Maternal Fetal MNew Brunswick, NJ 08901 (732) 828‑3000
- 125 Paterson StNew Brunswick, NJ 08901 (732) 235‑8006
Group practices
Medicare enrollment lists William E. Macmillan as a member of this group (CMS data updated 2026-10-02).
- Rutgers Health-Rwj Scleroderma Program391 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
- Pediatric Medicinealso
Other OB-GYNs in New Brunswick
Clinicians with the same Medicare primary specialty in New Brunswick, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326015025 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians