ADAM DOUGLAS MARKS M.D.
NPI 1265639025
Internal Medicine - Hospice and Palliative Medicine in Ann Arbor, MI

Active since June 27, 2007PECOS EnrolledAccepts Medicare Assignment
4260 PLYMOUTH ROAD, ANN ARBOR, MI 48109(734) 764-6831 Get Directions Write a Review

NPPES record last updated: June 9, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 9, 2025, Nov 19, 2019 (2 updates tracked since 2019).

About Adam Douglas Marks M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ADAM DOUGLAS MARKS M.D. (NPI 1265639025) is an individual hospice and palliative medicine provider in Ann Arbor, Michigan, licensed in Michigan (4301090107) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of University Of Wisconsin School Of Medicine (2007).

NPPES Registry Identity

NPI1265639025
Entity TypeIndividualMale
Primary Taxonomy207RH0002X
Provider Legal NameADAM DOUGLAS MARKSCredential: M.D.
Location Address4260 PLYMOUTH ROADAnn Arbor, MI 48109-2700
Mailing Address3621 S State StAnn Arbor, MI 48108-1633 · (734) 647-5299
Sole ProprietorNo
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2007
Enumeration DateJune 27, 2007
Last NPPES UpdateJune 9, 20252 updates tracked since enumeration
NPPES CertifiedJune 9, 2025
NPI 1265639025 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
License Licensed in MI · 4301090107
Definition
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 4301090107 (MI)
Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X · License 4301090107 (MI)
Also ListedPediatricsTaxonomy 208000000X · License 4301090107 (MI)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 4301090107 (MI)
4260 PLYMOUTH ROAD, Ann Arbor, MI 48109

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Adam Douglas Marks M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7517116320
PECOS Enrollment IDI20121010000317
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
32 services19 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
21 services15 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Michigan Health System

Acute Care Hospitals · Ann Arbor, MI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230046
Location1500 E Medical Center Drive, Spc 5474Ann Arbor, MI 48109 · Washtenaw County
Emergency services Birthing friendly

Henry Ford Allegiance Health

Acute Care Hospitals · Jackson, MI
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number230092
Location205 N East AveJackson, MI 49201 · Jackson County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Social Worker (Clinical)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine (Geriatric Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Surgery (Hospice and Palliative Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Nurse Practitioner
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Nurse Practitioner
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine (Geriatric Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Adam Marks's NPI number?

The NPI number for Adam Marks is 1265639025. It was assigned to this individual provider in the NPPES registry on June 27, 2007.

Where is Adam Marks located?

Adam Marks practices at 4260 Plymouth Road, Ann Arbor, MI 48109. The listed phone number is (734) 764-6831.

What is Adam Marks's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Adam Marks enrolled in Medicare?

Yes. Adam Marks is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Adam Marks accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Adam Marks as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Adam Marks affiliated with any hospitals?

According to CMS data, Adam Marks is affiliated with University Of Michigan Health System and Henry Ford Allegiance Health.

When was this NPI record last updated?

The NPPES record for Adam Marks was last updated on June 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.