What is Mark Grennell's NPI number?

Mark Grennell's National Provider Identifier (NPI) is 1831020502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Grennell's specialty?

Mark Grennell is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).

Where is Mark Grennell located?

Mark Grennell's practice location on file with NPPES is 171 Edison Way, Soquel, CA 95073-9486.

What is Mark Grennell's phone number?

The practice phone number listed in the NPPES registry for Mark Grennell is (831) 566-2483.

Is Mark Grennell's NPI active?

Yes — Mark Grennell's NPI (1831020502) is active in the NPPES registry as of the last update on 2026-05-29.

IndividualActive

Mark Grennell

NPI 1831020502 · Registered Nurse · Soquel, CA

Mark Grennell is a Registered Nurse provider in Soquel, CA (NPI 1831020502).

Provider details

NPI number: 1831020502
Entity type: Individual
Primary specialty: Registered NurseNursing Service Providers
Sex: Male
Sole proprietor: Yes
License: 95197166 (CA)

Specialties & taxonomies

Registered NursePrimary163W00000XLicense 95197166 (CA)
Nursing Service Providers

Profile Score

Established profile(52/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

171 Edison Way

Soquel, CA 95073-9486

Phone: (831) 566-2483

Approximate (ZIP-level) locationGet directions

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Mailing address