John Eric Grenillo, DC
John Eric Grenillo is a Chiropractor provider (Chiropractor) practicing in Ann Arbor, MI, registered in the NPPES registry with NPI 1023210358 since 2007. The credential DC stands for Doctor of Chiropractic. Practices at Superior Family Chiropratic Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1023210358 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John Eric Grenillo |
| Credential | DC |
| Sex | Male |
| Practice address | Ann Arbor, MI, 48105 |
| Phone | 7342135805 |
| Fax | 7342135872 |
| Enumeration date | 2007-05-31 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | 2301007818 | MI |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0H11230 | Other | MI | BCBSM |
Copy-ready billing details
Provider: John Grenillo, DC NPI: 1023210358 Taxonomy: 111N00000X (Chiropractor) Address: Ann Arbor, MI, 48105
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1619179942 | Superior Family Chiropratic Inc | Organization | Chiropractor | Ann Arbor, MI |
Verify this record
Cross-check NPI 1023210358 against the authoritative CMS record: view John Eric Grenillo on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.