Bob Chai, M.D., PH.D.
NPI 1871898171 · Diagnostic Radiology Physician · East Brunswick, NJ
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bob Chai, M.D., PH.D. is a Diagnostic Radiology Physician provider in East Brunswick, NJ (NPI 1871898171).
Provider details
- NPI number
- 1871898171
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA09172900 (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 tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,002 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 524 | $42 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 352 | $110 |
| Ct Scan of Upper Spine Without Contrast72125 | 226 | $50 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 183 | $85 |
| Ct Scan of Blood Vessels of Head With Contrast70496 | 179 | $88 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 158 | $92 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-01-18
- Last updated
- 2013-07-03
Frequently asked questions
- What is Bob Chai's NPI number?
- Bob Chai's National Provider Identifier (NPI) is 1871898171, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bob Chai's specialty?
- Bob Chai is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Bob Chai located?
- Bob Chai's practice location on file with NPPES is 483 Cranbury Rd, East Brunswick, NJ 08816-3610.
- What is Bob Chai's phone number?
- The practice phone number listed in the NPPES registry for Bob Chai is (732) 390-0030.
- Does Bob Chai accept Medicare?
- Bob Chai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bob Chai's NPI active?
- Yes — Bob Chai's NPI (1871898171) is active in the NPPES registry as of the last update on 2013-07-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.