OrganizationActive
Nehemiah Tan, MD, S.c.
NPI 1649281270 · Rheumatology Physician · Decatur, IL
Nehemiah Tan, MD, S.c. is a Rheumatology Physician organization in Decatur, IL (NPI 1649281270).
Provider details
- NPI number
- 1649281270
- Entity type
- Organization
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Nehemiah Tan, Owner/President(217) 876-6880
- License
- 036-085107 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
2499 N Monroe St
Decatur, IL 62526-4368
Phone: (217) 876-6880
Fax: (217) 876-6885
Street-level locationGet directions
Mailing address
2499 N Monroe St
Decatur, IL 62526-3941
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2014-10-20
Frequently asked questions
- What is Nehemiah Tan, MD, S.c.'s NPI number?
- Nehemiah Tan, MD, S.c.'s National Provider Identifier (NPI) is 1649281270, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Nehemiah Tan, MD, S.c.?
- Nehemiah Tan, MD, S.c. is classified in the NPPES registry as Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Nehemiah Tan, MD, S.c. located?
- Nehemiah Tan, MD, S.c.'s practice location on file with NPPES is 2499 N Monroe St, Decatur, IL 62526-4368.
- What is Nehemiah Tan, MD, S.c.'s phone number?
- The practice phone number listed in the NPPES registry for Nehemiah Tan, MD, S.c. is (217) 876-6880.
- Who is the authorized official for Nehemiah Tan, MD, S.c.?
- The authorized official listed on Nehemiah Tan, MD, S.c.'s NPPES record is Nehemiah Tan, Owner/President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Nehemiah Tan, MD, S.c.'s NPI active?
- Yes — Nehemiah Tan, MD, S.c.'s NPI (1649281270) is active in the NPPES registry as of the last update on 2014-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.