Michael Collier, MD
NPI 1811933674 · Internal Medicine Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Collier, MD is a Internal Medicine Physician provider in Knoxville, TN (NPI 1811933674).
Provider details
- NPI number
- 1811933674
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 32220 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
11,942 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,091 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 950 | $118 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 883 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 872 | $13 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 728 | $8 |
| Hemoglobin A1c Level83036 | 665 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 156 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 630 | 186 |
| Levothyroxine Sodium | 560 | 156 |
| Atorvastatin Calcium | 495 | 140 |
| Amlodipine Besylate | 368 | 99 |
| Pantoprazole Sodium | 325 | 98 |
| Metformin Hclbrand: Metformin Hcl Er | 243 | 69 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,493 across 187 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
- 2006-06-21
- Last updated
- 2008-04-30
Frequently asked questions
- What is Michael Collier's NPI number?
- Michael Collier's National Provider Identifier (NPI) is 1811933674, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Collier's specialty?
- Michael Collier is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Collier located?
- Michael Collier's practice location on file with NPPES is 11808 Kingston Pike, Knoxville, TN 37934-3803.
- What is Michael Collier's phone number?
- The practice phone number listed in the NPPES registry for Michael Collier is (865) 966-3940.
- Does Michael Collier accept Medicare?
- Michael Collier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Collier's NPI active?
- Yes — Michael Collier's NPI (1811933674) is active in the NPPES registry as of the last update on 2008-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.