Matthew Greiner, P.A.
NPI 1942238175 · Surgical Physician Assistant · Knoxville, TN
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Greiner, P.A. is a Surgical Physician Assistant provider in Knoxville, TN (NPI 1942238175).
Provider details
- NPI number
- 1942238175
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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.
$242 across 10 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
Additional practice locations (1)
- 207 E Emory RdPowell, TN 37849-4047Phone: (865) 541-2131Fax: (877) 821-0891
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2020-07-20
- Certified
- 2020-07-20
Frequently asked questions
- What is Matthew Greiner's NPI number?
- Matthew Greiner's National Provider Identifier (NPI) is 1942238175, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Greiner's specialty?
- Matthew Greiner is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew Greiner located?
- Matthew Greiner's practice location on file with NPPES is 2100 Clinch Ave Ste 430, Knoxville, TN 37916.
- What is Matthew Greiner's phone number?
- The practice phone number listed in the NPPES registry for Matthew Greiner is (865) 541-2131.
- Does Matthew Greiner accept Medicare?
- Matthew Greiner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Greiner's NPI active?
- Yes — Matthew Greiner's NPI (1942238175) is active in the NPPES registry as of the last update on 2020-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.