Megan Spears, CRNA
Megan Spears, CRNA is a Certified Registered Nurse Anesthetist in Chattanooga, TN, registered under NPI 1003112616.
Getting there
Here is what surrounds this office in Chattanooga, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 574 ft away.
Getting here and what is nearby
Parking Health Department Parking Garage 407 ft ~2 min
Parking 551 ft ~3 min
Parking 574 ft ~3 min
Restaurant McDonald's 0.25 mi ~5 min
Gas station kankus inc 0.31 mi ~7 min
E 3rd St
Restaurant The Yellow Deli 0.48 mi ~10 min
Gas station Exxon 0.50 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 21166 | TN | Certified Registered Nurse Anesthetist primary |
This provider holds licence 21166 issued in TN. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Certified Registered Nurse Anesthetist (crna)
- PAC ID
- 2860675683
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Tennessee | I20160720001338 | Practitioner - Certified Registered Nurse Anesthetist (crna) |
| Georgia | I20240919004020 | Practitioner - Certified Registered Nurse Anesthetist (crna) |
Medicare enrolment is recorded as approved under the provider type Practitioner - Certified Registered Nurse Anesthetist (crna). There are 2 separate enrolment records across 2 states (TN, GA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Nurse Anesthetist, Certified Registered covers
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition. NUCC Health Care Provider Taxonomy, code 367500000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003112616 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 28, 2011 |
| Last updated | Oct 6, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | CRNA |
| Practice address |
975 E 3RD ST Chattanooga, TN 37403 (423) 602-8400 Fax (423) 602-8401 |
| Mailing address |
PO BOX 2930 Indianapolis, IN 46206 |
| Other names |
Megan Leffler Other Name |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 1 | 2 | 6 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 1 | 4 | 6 | 2 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.