Mark Grossnickle, MD
NPI 1508844473 · Orthopaedic Surgery Physician · Greeley, CO
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Grossnickle, MD is a Orthopaedic Surgery Physician provider in Greeley, CO (NPI 1508844473).
Provider details
- NPI number
- 1508844473
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 29337 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Mailing address
Registry dates
- Enumerated
- 2006-01-02
- Last updated
- 2013-07-01
Frequently asked questions
- What is Mark Grossnickle's NPI number?
- Mark Grossnickle's National Provider Identifier (NPI) is 1508844473, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Grossnickle's specialty?
- Mark Grossnickle is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Grossnickle located?
- Mark Grossnickle's practice location on file with NPPES is 1900 16th St, Greeley, CO 80631-5114.
- What is Mark Grossnickle's phone number?
- The practice phone number listed in the NPPES registry for Mark Grossnickle is (970) 350-2427.
- Does Mark Grossnickle accept Medicare?
- Mark Grossnickle is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Grossnickle's NPI active?
- Yes — Mark Grossnickle's NPI (1508844473) is active in the NPPES registry as of the last update on 2013-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.