William Sievert

William Sievert is a Peer Specialist provider (Peer Specialist) practicing in Grove, OK, registered in the NPPES registry with NPI 1760966071 since 2018.

✓ Active NPI ✓ Valid NPI checksum

NPI	1760966071
Entity type	Individual (Type 1)
Name	William Sievert
Sex	Male
Practice address	1115 HARBOR RD, Grove, OK, 74344
Phone	9187864434
Fax	9187864435
Enumeration date	2018-09-21
Last updated in NPPES	2021-10-20

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
175T00000X	Peer Specialist	Primary	—	—

Copy-ready billing details

Provider: William Sievert
NPI: 1760966071
Taxonomy: 175T00000X (Peer Specialist)
Address: 1115 HARBOR RD, Grove, OK, 74344

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1063429181	Grand Lake Mental Health Center, Inc.	Organization	Mental Health Clinic/Center (Including Community Mental Health Center)	Grove, OK
1346423910	Teresa Kilburn	Individual	Mental Health Counselor	Grove, OK
1679740724	Kathleen Morris	Individual	Mental Health Counselor	Grove, OK
1184877540	John Harpole	Individual	Mental Health Counselor	Grove, OK
1134450562	Kathryn Buchanan	Individual	Counselor	Grove, OK
1881909075	Casey Trimble	Individual	Counselor	Grove, OK
1447553508	Russell Hinkle	Individual	Mental Health Counselor	Grove, OK
1578860243	Patty Hakel	Individual	Mental Health Counselor	Grove, OK

Verify this record

Cross-check NPI 1760966071 against the authoritative CMS record: view William Sievert 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 William Sievert?

William Sievert is registered in NPPES with the primary taxonomy of Peer Specialist. 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 2021-10-20.