Corydon Siffring, MD
Corydon Siffring, MD is a Surgical Critical Care Physician in Escanaba, MI, registered under NPI 1891728887. 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 3401 LUDINGTON ST, Escanaba, MI 49829. 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 |
|---|---|---|
| 41749 | TN | Surgical Critical Care Physician primary |
| EMC0002596 | MI | Trauma Surgery Physician |
| 036144511 | IL | Trauma Surgery Physician |
| 036144511 | IL | Surgery Physician |
| MD046448L | PA | Surgery Physician |
| MD046448L | PA | Trauma Surgery Physician |
| MC-2223 | ID | Surgery Physician |
| MD046448L | PA | Surgical Critical Care Physician |
| 036144511 | IL | Surgical Critical Care Physician |
Licences are recorded in 5 states: TN, MI, IL, PA, ID. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - General Surgery
- PAC ID
- 7517964398
Enrolled in Medicare 10 times, across 10 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Tennessee | I20070313000136 | Practitioner - General Surgery |
| Pennsylvania | I20170202000880 | Practitioner - General Surgery |
| Illinois | I20171116001992 | Practitioner - Critical Care (intensivists) |
| Georgia | I20211014002744 | Practitioner - Critical Care (intensivists) |
| Arizona | I20230103002152 | Practitioner - Critical Care (intensivists) |
| New Jersey | I20230412002342 | Practitioner - Critical Care (intensivists) |
| Connecticut | I20230616001035 | Practitioner - Critical Care (intensivists) |
| Michigan | I20230714003286 | Practitioner - General Surgery |
| Oklahoma | I20231004003734 | Practitioner - General Surgery |
| Indiana | I20250520004277 | Practitioner - General Surgery |
Medicare enrolment is recorded as approved under the provider type Practitioner - General Surgery. There are 10 separate enrolment records across 10 states (TN, PA, IL, GA, AZ, NJ, CT, MI, OK, IN). 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.
Licensed in 5 states
This provider holds licences in 5 states: Idaho, Illinois, Michigan, Pennsylvania and Tennessee. The practice address on file is in Escanaba, MI, but a licence in another state usually means they see patients there too — either at a second location or 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
- EMC0002596
- Specialty
- Trauma Surgery Physician
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 Surgical Critical Care covers
A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists. NUCC Health Care Provider Taxonomy, code 2086S0102X
All registered taxonomy codes
This provider registers 9 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2086S0102X | Surgical Critical Care Physician Surgical Critical Care | 41749 | TN | primary |
| 2086S0127X | Trauma Surgery Physician Trauma Surgery | EMC0002596 | MI | |
| 2086S0127X | Trauma Surgery Physician Trauma Surgery | 036144511 | IL | |
| 208600000X | Surgery Physician | 036144511 | IL | |
| 208600000X | Surgery Physician | MD046448L | PA | |
| 2086S0127X | Trauma Surgery Physician Trauma Surgery | MD046448L | PA | |
| 208600000X | Surgery Physician | MC-2223 | ID | |
| 2086S0102X | Surgical Critical Care Physician Surgical Critical Care | MD046448L | PA | |
| 2086S0102X | Surgical Critical Care Physician Surgical Critical Care | 036144511 | IL |
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 | 1891728887 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 10, 2006 |
| Last updated | Mar 2, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
3401 LUDINGTON ST Escanaba, MI 49829 (906) 786-5707 Fax (217) 757-6573 |
| Mailing address |
971 DUTTON RD Rochester Hills, MI 48306 |
| Other identifiers |
3830576
· Medicaid (TN) |
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 | 8 | 9 | 1 | 7 | 2 | 8 | 8 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 9 | 1 | 5 | 2 | 7 | 8 | 7 |
Sum = 73 · next multiple of 10 = 80 · check digit = 7 · actual last digit = 7
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.