What is Mark Greg's NPI number?

Mark Greg's National Provider Identifier (NPI) is 1285976472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Greg's specialty?

Mark Greg is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).

Where is Mark Greg located?

Mark Greg's practice location on file with NPPES is 18w140 Willow Ln, Darien, IL 60561-3658.

What is Mark Greg's phone number?

The practice phone number listed in the NPPES registry for Mark Greg is (630) 204-6894.

Is Mark Greg's NPI active?

Yes — Mark Greg's NPI (1285976472) is active in the NPPES registry as of the last update on 2013-03-26.

IndividualActive

Mark Greg, PHARMD, RPH

NPI 1285976472 · Pharmacist · Darien, IL

Mark Greg, PHARMD, RPH is a Pharmacist provider in Darien, IL (NPI 1285976472).

Provider details

NPI number: 1285976472
Entity type: Individual
Primary specialty: PharmacistPharmacy Service Providers
Credential: PHARMD, RPH
Sex: Male
Sole proprietor: Yes
License: 051037071 (IL)

Specialties & taxonomies

PharmacistPrimary183500000XLicense 051037071 (IL)
Pharmacy Service Providers

Profile Score

Detailed profile(78/100 index)

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

Registry tenure38% of score
13 yrs in NPPES 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

18w140 Willow Ln

Darien, IL 60561-3658

Phone: (630) 204-6894

Fax: (630) 990-5499

Street-level locationGet directions

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Mailing address