Adam Marks, M.D.
Adam Marks, M.D. is a Hospice and Palliative Medicine (Internal Medicine) Physician in Ann Arbor, MI, registered under NPI 1265639025. This provider registers 5 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 4260 PLYMOUTH ROAD, Ann Arbor, MI 48109. 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 |
|---|---|---|
| 4301090107 | MI | Hospice and Palliative Medicine (Internal… primary |
| 4301090107 | MI | Internal Medicine Physician |
| 4301090107 | MI | Geriatric Medicine (Internal Medicine)… |
| 4301090107 | MI | Pediatrics Physician |
| 4301090107 | MI | Student in an Organized Health Care… |
This provider holds licence 4301090107 issued in MI. 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 - Hospice/palliative Care
- PAC ID
- 7517116320
Medicare enrolment is recorded as approved under the provider type Practitioner - Hospice/palliative Care. 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.
What Hospice and Palliative Medicine covers
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care. NUCC Health Care Provider Taxonomy, code 207RH0002X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RH0002X | Hospice and Palliative Medicine (Internal Medicine) Physician Hospice and Palliative Medicine | 4301090107 | MI | primary |
| 207R00000X | Internal Medicine Physician | 4301090107 | MI | |
| 207RG0300X | Geriatric Medicine (Internal Medicine) Physician Geriatric Medicine | 4301090107 | MI | |
| 208000000X | Pediatrics Physician | 4301090107 | MI | |
| 390200000X | Student in an Organized Health Care Education/Training Program | 4301090107 | 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 | 1265639025 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 27, 2007 |
| Last updated | Jun 9, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
4260 PLYMOUTH ROAD Ann Arbor, MI 48109 (734) 764-6831 |
| Mailing address |
3621 S STATE ST Ann Arbor, MI 48108 |
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 | 2 | 6 | 5 | 6 | 3 | 9 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 3 | 5 | 3 | 3 | 9 | 0 | 4 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.