Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Michael R Dehaan, M.D.
Surgery Physician in Chicago, IL · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770588287
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Registry record
Entity type Individual (Type 1)
Name Dr. Michael R Dehaan
Credential M.D.
Sex Male
Practice address 401 N Michigan Ave Ste 1200, Chicago, IL, 60611
Phone (312) 635-0973
Enumeration date Jun 21, 2005
Last updated in NPPES Jul 28, 2025
Taxonomy & licenses
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 |
|---|---|---|---|
| P00213432 | Other | IL | RRMC |
| 0001635157 | Other | IL | BCBS PROVIDER NO. |
| 0360735792 | Medicaid | IL | - |
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 Michael Dehaan?
Michael Dehaan is registered in NPPES with the primary taxonomy of Surgery 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 → Radial Health Sc Physical Medicine & Rehabilitation Physician · Chicago, IL NPI 1215954185 Allison Blair Medical Physician Assistant · Chicago, IL NPI 1497932818 Sana Siddiqui Physical Medicine & Rehabilitation Physician · Chicago, IL NPI 1093977456 Ivone Gutierrez Mental Health Counselor · Chicago, IL NPI 1255614228 Sonika Randev Physical Medicine & Rehabilitation Physician · Chicago, IL NPI 1023403268 Juliet Panambo Kantoff Nurse Practitioner · Chicago, IL NPI 1003299165 Natasha Bhatt Clinical Social Worker · Chicago, IL NPI 1801248802 Ryder Moses-Kessler Physical Medicine & Rehabilitation Physician · Chicago, IL NPI 1184165433
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-28.