Mariann Jacob, M.D.
NPI 1811301799 · Pediatrics Physician · New York, NY
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariann Jacob, M.D. is a Pediatrics Physician provider in New York, NY (NPI 1811301799).
Provider details
- NPI number
- 1811301799
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 62609-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 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 (3)
- 801 S Milwaukee AveLibertyville, IL 60048-3204Phone: (847) 990-5260Fax: (847) 362-8031
- 9000 W Wisconsin AveMilwaukee, WI 53226-4874Phone: (414) 337-7050Fax: (414) 337-7020
- 3801 Spring StMount Pleasant, WI 53405-1667Phone: (262) 337-7050Fax: (262) 337-7860
Registry dates
- Enumerated
- 2014-06-18
- Last updated
- 2024-03-19
- Certified
- 2024-03-19
Frequently asked questions
- What is Mariann Jacob's NPI number?
- Mariann Jacob's National Provider Identifier (NPI) is 1811301799, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariann Jacob's specialty?
- Mariann Jacob is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Mariann Jacob located?
- Mariann Jacob's practice location on file with NPPES is 430 East 34th Street, New York, NY 10016.
- What is Mariann Jacob's phone number?
- The practice phone number listed in the NPPES registry for Mariann Jacob is (866) 733-7698.
- Does Mariann Jacob accept Medicare?
- Mariann Jacob is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariann Jacob's NPI active?
- Yes — Mariann Jacob's NPI (1811301799) is active in the NPPES registry as of the last update on 2024-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.