Mahmut Celiker, M.D.
NPI 1396782678 · Pediatric Hematology & Oncology Physician · Stony Brook, NY
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mahmut Celiker, M.D. is a Pediatric Hematology & Oncology Physician provider in Stony Brook, NY (NPI 1396782678).
Provider details
- NPI number
- 1396782678
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 235607 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$192 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-02
- Last updated
- 2009-04-07
Frequently asked questions
- What is Mahmut Celiker's NPI number?
- Mahmut Celiker's National Provider Identifier (NPI) is 1396782678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mahmut Celiker's specialty?
- Mahmut Celiker is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mahmut Celiker located?
- Mahmut Celiker's practice location on file with NPPES is University Hospital, L5, Stony Brook, NY 11794-0001.
- What is Mahmut Celiker's phone number?
- The practice phone number listed in the NPPES registry for Mahmut Celiker is (631) 444-7720.
- Does Mahmut Celiker accept Medicare?
- Mahmut Celiker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mahmut Celiker's NPI active?
- Yes — Mahmut Celiker's NPI (1396782678) is active in the NPPES registry as of the last update on 2009-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.