Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Lawrence Robert Mier, MD
Surgery Physician in Sonora, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841292281
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Lawrence Robert Mier
Credential MD
Sex Male
Practice address 680 Guzzi Ln, Ste 204, Sonora, CA, 95370
Phone (209) 536-5750
Fax (209) 536-3516
Enumeration date Aug 15, 2005
Last updated in NPPES Nov 25, 2013
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 |
|---|---|---|---|
| 00A400950 | Medicaid | CA | - |
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 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 Lawrence Mier?
Lawrence Mier is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Choo Lee Specialist · Sonora, CA NPI 1649271818 Donald Westbie Endocrinology, Diabetes & Metabolism Physician · Sonora, CA NPI 1912984436 Edward Clinite Family Medicine Physician · Sonora, CA NPI 1134109010 Airell Nygaard Orthopaedic Surgery Physician · Sonora, CA NPI 1417920760 Hillside Obstetrics & Gynecolgy Medical Group, Inc. Specialist · Sonora, CA NPI 1609832252 Donovan Teel Specialist · Sonora, CA NPI 1760449755 Eden Smith Surgery Physician · Sonora, CA NPI 1518908276 Kimberlee Reed Surgery Physician · Sonora, CA NPI 1841396876
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-25.