Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Myrna Lillia Granados Johnson, RDH AP
Dental Hygienist in Sonoma, CA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1548702533
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Registry record
Entity type Individual (Type 1)
Name Mrs. Myrna Lillia Granados Johnson
Credential RDH AP
Sex Female
Practice address 19270 Sonoma Highway 12, Sonoma, CA, 95476
Phone (707) 939-6070
Enumeration date Nov 8, 2016
Last updated in NPPES Nov 8, 2016
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1770669715 | Other | CA | MEDI-CAL FQHC |
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 Myrna Granados Johnson?
Myrna Granados Johnson is registered in NPPES with the primary taxonomy of Dental Hygienist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Ralph Pulverman Family Medicine Physician · Sonoma, CA NPI 1093760092 Sonoma Valley Community Health Center Federally Qualified Health Center (FQHC) · Sonoma, CA NPI 1770669715 Sonoma Valley Community Health Center Federally Qualified Health Center (FQHC) · Sonoma, CA NPI 1427118942 Sonoma Valley Community Health Center Federally Qualified Health Center (FQHC) · Sonoma, CA NPI 1093854036 Sonoma Valley Community Health Center Federally Qualified Health Center (FQHC) · Sonoma, CA NPI 1407157605 Sara Stratton Physician Assistant · Sonoma, CA NPI 1477832996 Silvia Zepeda-Molina Dental Hygienist · Sonoma, CA NPI 1033651518
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-08.