NPI Portal NPI Lookup & Verification

Dr. Mark Douglas Patterson, D.C.

Dr. Mark Douglas Patterson is a Chiropractor provider (Chiropractor) practicing in Naperville, IL, registered in the NPPES registry with NPI 1922179647 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1922179647
Entity type Individual (Type 1)
Name Dr. Mark Douglas Patterson
Credential D.C.
Sex Male
Practice address Naperville, IL, 60563
Phone 6309838455
Fax 6309838452
Enumeration date 2006-11-13
Last updated in NPPES 2007-07-09

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 IL

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
139433250640 Other IL HUMANA
08227869 Other IL BLUECROSS BLUESHIELD
0380094550 Medicaid IL
7753355 Other IL AETNA
Copy-ready billing details
Provider: Mark Patterson, D.C.
NPI: 1922179647
Taxonomy: 111N00000X (Chiropractor)
Address: Naperville, IL, 60563

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1497893945 Ajeet Charate Individual Professional Counselor Naperville, IL
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1881874360 Eunia Lee Individual Professional Counselor Naperville, IL
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1184051716 Elderly Muslim Care Action Network Organization In Home Supportive Care Agency Naperville, IL
1427452879 Kristin Francesco Individual Behavior Analyst Naperville, IL
1073910469 Diana Walker Individual Behavior Analyst Naperville, IL
1992192009 Kennedy Shontz Individual Behavior Analyst Naperville, IL

Verify this record

Cross-check NPI 1922179647 against the authoritative CMS record: view Dr. Mark Douglas Patterson 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

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 Patterson?
Mark Patterson is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-09.