Union County Infectious Diseases Group
NPI 1235109158 · Infectious Disease Physician · Elizabeth, NJ
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Union County Infectious Diseases Group is a Infectious Disease Physician organization in Elizabeth, NJ (NPI 1235109158).
Provider details
- NPI number
- 1235109158
- Entity type
- Organization
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Farrer, MD(646) 517-1257
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 225 Williamson StElizabeth, NJ 07202-3625Phone: (908) 994-5010Fax: (908) 355-9583
Registry dates
- Enumerated
- 2006-01-24
- Last updated
- 2020-03-04
- Certified
- 2020-03-04
Frequently asked questions
- What is Union County Infectious Diseases Group's NPI number?
- Union County Infectious Diseases Group's National Provider Identifier (NPI) is 1235109158, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Union County Infectious Diseases Group?
- Union County Infectious Diseases Group is classified in the NPPES registry as Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Union County Infectious Diseases Group located?
- Union County Infectious Diseases Group's practice location on file with NPPES is 240 Williamson St Ste 401, Elizabeth, NJ 07202-3672.
- What is Union County Infectious Diseases Group's phone number?
- The practice phone number listed in the NPPES registry for Union County Infectious Diseases Group is (908) 282-0500.
- Does Union County Infectious Diseases Group accept Medicare?
- Union County Infectious Diseases Group is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Union County Infectious Diseases Group?
- The authorized official listed on Union County Infectious Diseases Group's NPPES record is William Farrer, MD. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Union County Infectious Diseases Group's NPI active?
- Yes — Union County Infectious Diseases Group's NPI (1235109158) is active in the NPPES registry as of the last update on 2020-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.