David O'donnell, M.D.
David O'donnell, M.D. is a Dermatology Physician in Saginaw, MI, registered under NPI 1831152446. This provider registers 7 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 4705 TOWNE CENTRE RD SUITE 301, Saginaw, MI 48604. 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 |
|---|---|---|
| DO049303 | MI | Dermatology Physician primary |
| DO049303 | MI | Specialist |
| DO049303 | MI | MOHS-Micrographic Surgery Physician |
| DO049303 | MI | Procedural Dermatology Physician |
| DO049303 | MI | Dermatopathology Physician |
| DO049303 | MI | Clinical & Laboratory Dermatological… |
| DO049303 | MI | Pediatric Dermatology Physician |
This provider holds licence DO049303 issued in MI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Dermatology covers
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging. NUCC Health Care Provider Taxonomy, code 207N00000X
All registered taxonomy codes
This provider registers 7 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207N00000X | Dermatology Physician | DO049303 | MI | primary |
| 174400000X | Specialist | DO049303 | MI | |
| 207ND0101X | MOHS-Micrographic Surgery Physician MOHS-Micrographic Surgery | DO049303 | MI | |
| 207NS0135X | Procedural Dermatology Physician Procedural Dermatology | DO049303 | MI | |
| 207ND0900X | Dermatopathology Physician Dermatopathology | DO049303 | MI | |
| 207NI0002X | Clinical & Laboratory Dermatological Immunology Physician Clinical & Laboratory Dermatological Immunology | DO049303 | MI | |
| 207NP0225X | Pediatric Dermatology Physician Pediatric Dermatology | DO049303 | MI |
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 | 1831152446 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 7, 2006 |
| Last updated | May 27, 2008 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | M.D. |
| Practice address |
4705 TOWNE CENTRE RD SUITE 301 Saginaw, MI 48604 (989) 793-6505 Fax (989) 793-7411 |
| Other identifiers |
0707324351
· BLUE CROSS BLUE SHIELD (MI) 070006809 · RAILROAD MEDICARE (MI) 103082897 (MI) |
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 | 3 | 1 | 1 | 5 | 2 | 4 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 6 | 1 | 2 | 5 | 4 | 4 | 8 |
Sum = 64 · next multiple of 10 = 70 · 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.