Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Albert Marcil, M.D.
Psychiatry Physician in Omaha, NE · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750393104
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Registry record
Entity type Individual (Type 1)
Name William Albert Marcil
Credential M.D.
Sex Male
Practice address 415 S 25th St, Omaha, NE, 68131
Phone (402) 717-5336
Fax (402) 717-5499
Enumeration date Aug 13, 2006
Last updated in NPPES Sep 9, 2015
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 |
|---|---|---|---|
| 47-0376583-43 | Medicaid | NE | - |
| 1909424 | Medicaid | IA | - |
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
What specialty is William Marcil?
William Marcil is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Lasting Hope Recovery Center Psychiatric Hospital · Omaha, NE NPI 1245276674 Cynthia Petersen Psychiatric/Mental Health Nurse Practitioner · Omaha, NE NPI 1619028578 Joan Walker Mental Health Counselor · Omaha, NE NPI 1952573834 Alegent Health Bergan Mercy Health System Psychiatry Physician · Omaha, NE NPI 1184897647 Stephanie Chemkhi Mental Health Counselor · Omaha, NE NPI 1598506875
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-09.