Mary Obrien, DO
NPI 1699860296 · Family Medicine Physician · Greeley, CO
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Obrien, DO is a Family Medicine Physician provider in Greeley, CO (NPI 1699860296).
Provider details
- NPI number
- 1699860296
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 44514 (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
19 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
- 2006-10-03
- Last updated
- 2015-10-15
Frequently asked questions
- What is Mary Obrien's NPI number?
- Mary Obrien's National Provider Identifier (NPI) is 1699860296, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Obrien's specialty?
- Mary Obrien is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Obrien located?
- Mary Obrien's practice location on file with NPPES is Greeley Cboc, Greeley, CO 80634.
- What is Mary Obrien's phone number?
- The practice phone number listed in the NPPES registry for Mary Obrien is (970) 313-0027.
- Does Mary Obrien accept Medicare?
- Mary Obrien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Obrien's NPI active?
- Yes — Mary Obrien's NPI (1699860296) is active in the NPPES registry as of the last update on 2015-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.