John Decelles, M.D.
NPI 1841238490 · Internal Medicine Physician · Mishawaka, IN
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Decelles, M.D. is a Internal Medicine Physician provider in Mishawaka, IN (NPI 1841238490).
Provider details
- NPI number
- 1841238490
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01051161 (IN)
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
- 2006-06-04
- Last updated
- 2009-12-04
Frequently asked questions
- What is John Decelles's NPI number?
- John Decelles's National Provider Identifier (NPI) is 1841238490, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Decelles's specialty?
- John Decelles is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Decelles located?
- John Decelles's practice location on file with NPPES is 611 E Douglas Rd, Mishawaka, IN 46545-1467.
- What is John Decelles's phone number?
- The practice phone number listed in the NPPES registry for John Decelles is (574) 472-6450.
- Does John Decelles accept Medicare?
- John Decelles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Decelles's NPI active?
- Yes — John Decelles's NPI (1841238490) is active in the NPPES registry as of the last update on 2009-12-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.