NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Peter Scott Geissler, M.D., PH.D.

Addiction (Substance Use Disorder) Counselor in Post Falls, ID · enumerated 2009.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1073842266

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Registry record

Entity type Individual (Type 1)
Name Dr. Peter Scott Geissler
Credential M.D., PH.D.
Sex Male
Practice address Post Falls, ID, 83854
Enumeration date Dec 17, 2009
Last updated in NPPES Jan 15, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License RC00055828 (WA) Secondary
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License ADD14039 (DC) Secondary
101Y00000X Counselor Behavioral Health & Social Service Providers · License 10129152 (OR) Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License MH8935 (FL) Secondary
102L00000X Psychoanalyst Behavioral Health & Social Service Providers · License RP-254 (CA) Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License LMFT000063 (DC) Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 842 (TN) Secondary
261QM2500X Medical Specialty Clinic/Center Ambulatory Health Care Facilities Secondary
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 1059 (TN) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

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Frequently asked questions

What specialty is Peter Geissler?
Peter Geissler is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-15.