Jules Marks, D.O.
NPI 1346228814 · Internal Medicine Physician · Buffalo Grove, IL
Jules Marks, D.O. is a Internal Medicine Physician provider in Buffalo Grove, IL (NPI 1346228814).
Provider details
- NPI number
- 1346228814
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 03684408 (IL)
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
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
- 2006-01-05
- Last updated
- 2012-02-28
Frequently asked questions
- What is Jules Marks's NPI number?
- Jules Marks's National Provider Identifier (NPI) is 1346228814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jules Marks's specialty?
- Jules Marks is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jules Marks located?
- Jules Marks's practice location on file with NPPES is 1450 Busch Parkway, Buffalo Grove, IL 60089-4541.
- What is Jules Marks's phone number?
- The practice phone number listed in the NPPES registry for Jules Marks is (847) 537-7744.
- Is Jules Marks's NPI active?
- Yes — Jules Marks's NPI (1346228814) is active in the NPPES registry as of the last update on 2012-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.