Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Renee C Lassila, MD
Pediatrics Physician in Portage, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619903317
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Registry record
Entity type Individual (Type 1)
Name Renee C Lassila
Credential MD
Sex Female
Practice address 2700 East Centre Ave, Portage, MI, 49002
Phone (269) 286-7050
Fax (269) 286-7051
Enumeration date Jun 24, 2006
Last updated in NPPES Nov 27, 2023
Taxonomy & licenses
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 4301065740 (MI) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3214207 | Medicaid | MI | - |
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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Renee Lassila?
Renee Lassila is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Duncan Chapman Family Medicine Physician · Portage, MI NPI 1437474152 Leah Predum Physician Assistant · Portage, MI NPI 1417263336 Kaitlin Chappell Family Nurse Practitioner · Portage, MI NPI 1518267137 Benjamin Sage Physician Assistant · Portage, MI NPI 1134520281 Kelly Pasch Family Nurse Practitioner · Portage, MI NPI 1245782804
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-27.