What is Mark Greiner's NPI number?

Mark Greiner's National Provider Identifier (NPI) is 1164363057, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Greiner's specialty?

Mark Greiner is listed in the NPPES registry with a primary specialty of Adult Companion (Nursing Service Related Providers).

Where is Mark Greiner located?

Mark Greiner's practice location on file with NPPES is 7140 S 91st St Apt 801, Lincoln, NE 68526-9731.

What is Mark Greiner's phone number?

The practice phone number listed in the NPPES registry for Mark Greiner is (531) 218-4987.

Is Mark Greiner's NPI active?

Yes — Mark Greiner's NPI (1164363057) is active in the NPPES registry as of the last update on 2026-04-03.

IndividualActive

Mark Greiner

NPI 1164363057 · Adult Companion · Lincoln, NE

Mark Greiner is a Adult Companion provider in Lincoln, NE (NPI 1164363057).

Provider details

NPI number: 1164363057
Entity type: Individual
Primary specialty: Adult CompanionNursing Service Related Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Adult CompanionPrimary372600000X
Nursing Service Related Providers

Profile Score

Basic profile(46/100 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
83% 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

7140 S 91st St Apt 801

Lincoln, NE 68526-9731

Phone: (531) 218-4987

Street-level locationGet directions

More NE providers

Mailing address