Mark Greenfield, D.O.
NPI 1205826799 · Orthopaedic Surgery Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Greenfield, D.O. is a Orthopaedic Surgery Physician provider in Phoenix, AZ (NPI 1205826799).
Provider details
- NPI number
- 1205826799
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2827 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$391 across 7 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-25
- Last updated
- 2010-06-25
Frequently asked questions
- What is Mark Greenfield's NPI number?
- Mark Greenfield's National Provider Identifier (NPI) is 1205826799, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Greenfield's specialty?
- Mark Greenfield is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Greenfield located?
- Mark Greenfield's practice location on file with NPPES is 15830 N 35th Ave, Phoenix, AZ 85053-7640.
- What is Mark Greenfield's phone number?
- The practice phone number listed in the NPPES registry for Mark Greenfield is (602) 298-1188.
- Does Mark Greenfield accept Medicare?
- Mark Greenfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Greenfield's NPI active?
- Yes — Mark Greenfield's NPI (1205826799) is active in the NPPES registry as of the last update on 2010-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.