Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Biebel, MD
Urology Physician in Naperville, IL · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447614797
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Biebel
Credential MD
Sex Male
Practice address 100 Spalding Dr Ste 206, Naperville, IL, 60540
Phone (331) 221-9004
Enumeration date Apr 12, 2016
Last updated in NPPES Aug 15, 2022
Taxonomy & licenses
208800000X Urology Physician Allopathic & Osteopathic Physicians · License 2021009970 (MO) Secondary
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 |
|---|---|---|---|
| 200095280 | Medicaid | MO | - |
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 Mark Biebel?
Mark Biebel is registered in NPPES with the primary taxonomy of Urology 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 → Melissa Dezoute Surgical Physician Assistant · Naperville, IL NPI 1669814349 Ivy Enger Family Nurse Practitioner · Naperville, IL NPI 1003348103 Natasha Kadakia Endocrinology, Diabetes & Metabolism Physician · Naperville, IL NPI 1811484199 Abigail Lerner Nurse Practitioner · Naperville, IL NPI 1114652997 Natalie Bartos Registered Dietitian · Naperville, IL NPI 1497503916 Danielle Szeliga Nurse Practitioner · Naperville, IL NPI 1891522140
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-15.