Internal Medicine Associates at Princeton, LLC
NPI 1285775114 · Internal Medicine Physician · Princeton, NJ
Internal Medicine Associates at Princeton, LLC is a Internal Medicine Physician organization in Princeton, NJ (NPI 1285775114).
Provider details
- NPI number
- 1285775114
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Parent organization
- Princeton Internal Medicine Associates, PC
- Organization subpart
- Yes
- Authorized official
- Mark Schaeffer, President(609) 921-3362
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2007-02-12
- Last updated
- 2010-07-02
Frequently asked questions
- What is Internal Medicine Associates at Princeton, LLC's NPI number?
- Internal Medicine Associates at Princeton, LLC's National Provider Identifier (NPI) is 1285775114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Internal Medicine Associates at Princeton, LLC?
- Internal Medicine Associates at Princeton, LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Internal Medicine Associates at Princeton, LLC located?
- Internal Medicine Associates at Princeton, LLC's practice location on file with NPPES is 281 Witherspoon St, Princeton, NJ 08540-3210.
- What is Internal Medicine Associates at Princeton, LLC's phone number?
- The practice phone number listed in the NPPES registry for Internal Medicine Associates at Princeton, LLC is (609) 921-3362.
- Who is the authorized official for Internal Medicine Associates at Princeton, LLC?
- The authorized official listed on Internal Medicine Associates at Princeton, LLC's NPPES record is Mark Schaeffer, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Internal Medicine Associates at Princeton, LLC's NPI active?
- Yes — Internal Medicine Associates at Princeton, LLC's NPI (1285775114) is active in the NPPES registry as of the last update on 2010-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.