Changtai Tian, MD
NPI 1871171561 · Hematology & Oncology Physician · Stony Brook, NY
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Changtai Tian, MD is a Hematology & Oncology Physician provider in Stony Brook, NY (NPI 1871171561).
Provider details
- NPI number
- 1871171561
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125.077594 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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.
$237 across 9 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
Additional practice locations (1)
- 600 S Paulina St Ste 403Chicago, IL 60612-3806Phone: (312) 942-7100
Registry dates
- Enumerated
- 2021-04-01
- Last updated
- 2024-06-19
- Certified
- 2024-06-19
Frequently asked questions
- What is Changtai Tian's NPI number?
- Changtai Tian's National Provider Identifier (NPI) is 1871171561, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Changtai Tian's specialty?
- Changtai Tian is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Changtai Tian located?
- Changtai Tian's practice location on file with NPPES is 101 Nicolls Rd, Stony Brook, NY 11794-3806.
- What is Changtai Tian's phone number?
- The practice phone number listed in the NPPES registry for Changtai Tian is (631) 689-8333.
- Does Changtai Tian accept Medicare?
- Changtai Tian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Changtai Tian's NPI active?
- Yes — Changtai Tian's NPI (1871171561) is active in the NPPES registry as of the last update on 2024-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.