David Alter, MD
David Alter, MD is a Chemical Pathology Physician in Grand Rapids, MI, registered under NPI 1679569404. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 35 MICHIGAN ST NE, Grand Rapids, MI 49503. 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 |
|---|---|---|
| 81251 | GA | Chemical Pathology Physician primary |
| 4301074759 | MI | Chemical Pathology Physician |
| 4301074759 | MI | Clinical Pathology/Laboratory Medicine… |
Licences are recorded in 2 states: GA, MI. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Pathology
- PAC ID
- 4688861586
- Enrollment ID
- I20190201000826
Medicare enrolment is recorded as approved under the provider type Practitioner - Pathology. 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 2 states
This provider holds licences in 2 states: Georgia and Michigan. The practice address on file is in Grand Rapids, 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
- 4301074759
- Specialty
- Chemical Pathology 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 Chemical Pathology covers
A chemical pathologist has expertise in the biochemistry of the human body as it applies to the understanding of the cause and progress of disease. This physician functions as a clinical consultant in the diagnosis and treatment of human disease. Chemical pathology entails the application of biochemical data to the detection, confirmation or monitoring of disease. NUCC Health Care Provider Taxonomy, code 207ZP0104X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207ZP0104X | Chemical Pathology Physician Chemical Pathology | 81251 | GA | primary |
| 207ZP0104X | Chemical Pathology Physician Chemical Pathology | 4301074759 | MI | |
| 207ZP0105X | Clinical Pathology/Laboratory Medicine Physician Clinical Pathology/Laboratory Medicine | 4301074759 | 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 | 1679569404 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 27, 2005 |
| Last updated | Aug 16, 2019 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
35 MICHIGAN ST NE Grand Rapids, MI 49503 (616) 267-2660 |
| Mailing address |
2017 WILSHIRE DR SE Grand Rapids, MI 49506 |
| Other identifiers |
4485349
· Medicaid (MI) 4485330 · Medicaid (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 | 6 | 7 | 9 | 5 | 6 | 9 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 5 | 9 | 1 | 6 | 9 | 4 | 0 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
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.