Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Douglas Adolph Mazurek, M.D.
Specialist in Valparaiso, IN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1033223235
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Registry record
Entity type Individual (Type 1)
Name Douglas Adolph Mazurek
Credential M.D.
Sex Male
Practice address 1101 Glendale Blvd, Suite 103, Valparaiso, IN, 46383
Phone (219) 464-9054
Fax (219) 465-1749
Enumeration date Aug 18, 2006
Last updated in NPPES Sep 11, 2020
Taxonomy & licenses
207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 01038566 (IN) Secondary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 01038566 (IN) 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 |
|---|---|---|---|
| 200016720 | Medicaid | IN | - |
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 NPI 1033223235 active?
Yes, as of the latest NPPES snapshot, NPI 1033223235 is active (record last updated 2020-09-11).
How do I verify Douglas Mazurek's NPI record?
Cross-check NPI 1033223235 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Subba Nagubadi Urology Physician · Valparaiso, IN NPI 1417957457 Porter Health Services Clinical Medical Laboratory · Valparaiso, IN NPI 1477514867 Mitchell Mazurek Physical Medicine & Rehabilitation Physician · Valparaiso, IN NPI 1043259328 Rhondalynn Sears Pediatric Nurse Practitioner · Valparaiso, IN NPI 1760401368 Porter County Pulmonary and Critical Care Medicine P.C. Critical Care Medicine (Internal Medicine) Physician · Valparaiso, IN NPI 1326114463 Associated Pediatricians, LLC Specialist · Valparaiso, IN NPI 1942368519 The Kobak Center for Women'S Health,Inc. Specialist · Valparaiso, IN NPI 1871713578 James Anthony Pulmonary Disease Physician · Valparaiso, IN NPI 1639356025
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-11.