Sheri Armstrong, M.D.
NPI 1669401196 · Diagnostic Radiology Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sheri Armstrong, M.D. is a Diagnostic Radiology Physician provider in Knoxville, TN (NPI 1669401196).
Provider details
- NPI number
- 1669401196
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 13730 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,573 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 1,010 | $39 |
| X-Ray of Chest, 1 View71045 | 489 | $8 |
| Ct Scan of Upper Spine Without Contrast72125 | 365 | $46 |
| Mri Scan of Brain Without Contrast70551 | 315 | $69 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 268 | $81 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 227 | $85 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$43 across 2 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
- 2006-06-30
- Last updated
- 2015-07-23
Frequently asked questions
- What is Sheri Armstrong's NPI number?
- Sheri Armstrong's National Provider Identifier (NPI) is 1669401196, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sheri Armstrong's specialty?
- Sheri Armstrong is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Sheri Armstrong located?
- Sheri Armstrong's practice location on file with NPPES is 2001 Laurel Ave, Knoxville, TN 37916-1810.
- What is Sheri Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Sheri Armstrong is (865) 766-6870.
- Does Sheri Armstrong accept Medicare?
- Sheri Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sheri Armstrong's NPI active?
- Yes — Sheri Armstrong's NPI (1669401196) is active in the NPPES registry as of the last update on 2015-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.