Caroline Ferris, MD
Caroline Ferris, MD is an Anesthesiology Physician in Bethesda, MD, registered under NPI 1376576652. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 8901 ROCKVILLE PIKE, Bethesda, MD 20889. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| M4777 | TX | Anesthesiology Physician primary |
| 0101230477 | VA | Anesthesiology Physician |
| 41366 | TX | Anesthesiology Physician |
| M4777 | TX | Critical Care Medicine (Anesthesiology)… |
| 83334 | GA | Critical Care Medicine (Anesthesiology)… |
| M4777 | TX | Critical Care Medicine (Internal… |
Licences are recorded in 3 states: TX, VA, GA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Critical Care (intensivists)
- PAC ID
- 6103821848
Medicare enrolment is recorded as approved under the provider type Practitioner - Critical Care (intensivists). This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 3 states
This provider holds licences in 3 states: Georgia, Texas and Virginia. Multi-state licensure often means the provider works near a state border, covers more than one office, or delivers care by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 83334
- Specialty
- Critical Care Medicine (Anesthesiology)…
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Anesthesiology covers
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery. NUCC Health Care Provider Taxonomy, code 207L00000X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207L00000X | Anesthesiology Physician | M4777 | TX | primary |
| 207L00000X | Anesthesiology Physician | 0101230477 | VA | |
| 207L00000X | Anesthesiology Physician | 41366 | TX | |
| 207LC0200X | Critical Care Medicine (Anesthesiology) Physician Critical Care Medicine | M4777 | TX | |
| 207LC0200X | Critical Care Medicine (Anesthesiology) Physician Critical Care Medicine | 83334 | GA | |
| 207RC0200X | Critical Care Medicine (Internal Medicine) Physician Critical Care Medicine | M4777 | TX |
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 | 1376576652 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 9, 2006 |
| Last updated | Sep 2, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
8901 ROCKVILLE PIKE Bethesda, MD 20889 (301) 295-4787 |
| Other identifiers |
1376576652
(TX) 181298405 (TX) |
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 | 3 | 7 | 6 | 5 | 7 | 6 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 5 | 6 | 1 | 7 | 3 | 6 | 1 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
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.