Margaret Tweel, CRNA
NPI 1467421362 · Certified Registered Nurse Anesthetist · Oak Ridge, TN
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Tweel, CRNA is a Certified Registered Nurse Anesthetist provider in Oak Ridge, TN (NPI 1467421362).
Provider details
- NPI number
- 1467421362
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Female
- Sole proprietor
- No
- License
- 42646 (TN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
251 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 151 | $89 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 45 | $115 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 26 | $119 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 18 | $148 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 11 | $90 |
Typical Medicare-allowed amounts for these services range $89–$148 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2021-03-12
- Certified
- 2021-03-12
Frequently asked questions
- What is Margaret Tweel's NPI number?
- Margaret Tweel's National Provider Identifier (NPI) is 1467421362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Tweel's specialty?
- Margaret Tweel is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Tweel located?
- Margaret Tweel's practice location on file with NPPES is 990 Oak Ridge Tpke, Oak Ridge, TN 37830-6976.
- What is Margaret Tweel's phone number?
- The practice phone number listed in the NPPES registry for Margaret Tweel is (865) 481-1112.
- Does Margaret Tweel accept Medicare?
- Margaret Tweel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Tweel's NPI active?
- Yes — Margaret Tweel's NPI (1467421362) is active in the NPPES registry as of the last update on 2021-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.