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

NPI Status: Active since June 27, 2007

Contact Information

4260 PLYMOUTH ROAD
ANN ARBOR, MI
ZIP 48109
Phone: (734) 764-6831

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  • Individual
  • Male
  • Years of Experience 19
  • Internal Medicine
  • Hospice and Palliative Medicine
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About ADAM MARKS

This page provides the complete NPI Profile along with additional information for Adam Marks, an internist established in Ann Arbor, Michigan with a medical specialization in Internal Medicine, focusing in hospice and palliative medicine and more than 19 years of experience. He graduated from University Of Wisconsin School Of Medicine in 2007. The healthcare provider is registered in the NPI registry with number 1265639025 assigned on June 2007. The practitioner's primary taxonomy code is 207RH0002X with license number 4301090107 (MI). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1265639025
Provider Name
ADAM DOUGLAS MARKS M.D.
Gender
Male
Entity Type
Individual
Location Address
4260 PLYMOUTH ROAD ANN ARBOR, MI 48109
Location Phone
(734) 764-6831
Mailing Address
3621 S STATE ST ANN ARBOR, MI 48108
Mailing Phone
(734) 647-5299
Medical School Name
UNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduation Year
2007
Is Sole Proprietor?
No
Enumeration Date
06-27-2007
Last Update Date
06-09-2025
Code Navigator

An internist like Adam Marks is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Hospice and Palliative Medicine

Taxonomy Code
207RH0002X
Type
Allopathic & Osteopathic Physicians
License No.
4301090107
License State
MI
Taxonomy Description
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

4301090107 (MI)
2207RG0300XAllopathic & Osteopathic Physicians

Internal Medicine
Geriatric Medicine

4301090107 (MI)
3208000000XAllopathic & Osteopathic Physicians

Pediatrics

4301090107 (MI)
4390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

4301090107 (MI)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Choice Bronze HSA - HMO
  • Choice Bronze HSA + Vision + Adult Dental - HMO
  • Clear Gold - HMO
  • Clear Gold + Vision + Adult Dental - HMO
  • Complete Gold - HMO
  • Complete Gold + Vision + Adult Dental - HMO
  • Complete Silver - HMO
  • Complete Silver + Vision + Adult Dental - HMO
  • Everyday Bronze - HMO
  • Everyday Bronze + Vision + Adult Dental - HMO
  • Clear Silver - HMO
  • Elite Gold - HMO
  • Elite Gold + Vision + Adult Dental - HMO
  • Everyday Gold - HMO
  • Everyday Gold + Vision + Adult Dental - HMO
  • Standard Gold - HMO
  • Standard Gold + Vision + Adult Dental - HMO
  • Standard Silver - HMO
  • Standard Silver + Vision + Adult Dental - HMO
  • Complete Gold - HMO
  • Complete Gold + Vision + Adult Dental - HMO
  • Elite Gold - HMO
  • Elite Gold + Vision + Adult Dental - HMO
  • Focused Silver - HMO
  • Focused Silver + Vision + Adult Dental - HMO
  • Standard Gold - HMO
  • Standard Gold + Vision + Adult Dental - HMO
  • Standard Silver - HMO
  • Standard Silver + Vision + Adult Dental - HMO
  • Blue Cross� Preferred HMO Bronze Extra - HMO
  • Blue Cross� Preferred HMO Bronze Saver HSA - HMO
  • Blue Cross� Preferred HMO Bronze Secure - HMO
  • Blue Cross� Preferred HMO Gold - HMO
  • Blue Cross� Preferred HMO Gold Extra - HMO
  • Blue Cross� Preferred HMO Silver - HMO
  • Blue Cross� Preferred HMO Silver Extra - HMO
  • Blue Cross� Preferred HMO Silver Saver - HMO
  • Blue Cross� Preferred HMO Value - HMO
  • Blue Cross� Select HMO Bronze Extra - HMO
  • Blue Cross� Premier PPO Bronze Extra - PPO
  • Blue Cross� Premier PPO Bronze Saver HSA - PPO
  • Blue Cross� Premier PPO Bronze Secure - PPO
  • Blue Cross� Premier PPO Gold - PPO
  • Blue Cross� Premier PPO Gold Extra - PPO
  • Blue Cross� Premier PPO Silver - PPO
  • Blue Cross� Premier PPO Silver Extra - PPO
  • Blue Cross� Premier PPO Silver Saver HSA - PPO
  • Blue Cross� Premier PPO Value - PPO
  • MHP Bronze - HMO
  • MHP Bronze Saver (Expanded) - HMO
  • MHP Expanded Bronze Standard - HMO
  • MHP Gold - HMO
  • MHP Gold Standard - HMO
  • MHP Silver Exchange - HMO
  • MHP Silver Exchange Rewards - HMO
  • MHP Silver Standard - HMO
  • MHP Young Adult/Catastrophic - HMO
  • MyPriority Balanced Silver - HMO
  • MyPriority Premier Silver - HMO
  • MyPriority Standard Bronze - HMO
  • MyPriority Standard Bronze - Travel - HMO
  • MyPriority Standard Gold - HMO
  • MyPriority Standard Silver - HMO
  • MyPriority Standard Silver - Travel - HMO
  • MyPriority Value Bronze - HMO
  • MyPriority Value Bronze HSA - HMO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Adam Marks is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Adam Marks is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 7517116320

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20121010000317

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Follow-up hospital inpatient care per day, typically 35 minutes

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.

This service was performed 45 times for 21 patients

Initial hospital inpatient care per day, typically 70 minutes

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

This service was performed 11 times for 11 patients

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Adam Marks is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
UNIVERSITY OF MICHIGAN HEALTH SYSTEM1500 E MEDICAL CENTER DRIVE, SPC 5474
ANN ARBOR, MI 48109
(734) 764-1505Acute Care Hospitals
HENRY FORD ALLEGIANCE HEALTH205 N EAST AVE
JACKSON, MI 49201
(517) 788-4800Acute Care Hospitals

Reviews for ADAM DOUGLAS MARKS M.D.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1265639025, we treat the final digit (5) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
5
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
3
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
Unchanged
Pos 9
2
Doubled → 4
Check
5
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 6 → 12 → 3 6 → 12 → 3 9 → 18 → 9 2 → 4

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 2 + 1 + 2 + 5 + 1 + 2 + 3 + 1 + 8 + 0 + 4 + 24 = 55

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1265639025.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine (Geriatric Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Psychiatry & Neurology (Neurology)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Psychiatry & Neurology (Neurology)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine (Geriatric Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine (Geriatric Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Social Worker (Clinical)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine (Geriatric 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
Obstetrics & Gynecology
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
Internal Medicine (Geriatric Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Internal Medicine
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Hearing Aid Equipment
4260 PLYMOUTH ROAD, EAST ANN ARBOR HEALTH CENTER
ANN ARBOR, MI 48109
Internal Medicine (Geriatric Medicine)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Nurse Practitioner
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Psychiatry & Neurology (Geriatric Psychiatry)
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109
Advanced Practice Midwife
4260 PLYMOUTH ROAD
ANN ARBOR, MI 48109

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1265639025, enumerated as an "individual" on June 27, 2007.

The provider is located at 4260 PLYMOUTH ROAD ANN ARBOR, MI 48109 and the phone number is (734) 764-6831.

Internal Medicine with taxonomy code 207RH0002X and a focus in Hospice and Palliative Medicine.

The provider might be accepting Accepts: Ambetter from Buckeye Health Plan, Ambetter from. Please consult your insurance carrier or call the provider to verify.

Adam Marks is affiliated with: UNIVERSITY OF MICHIGAN HEALTH SYSTEM and HENRY FORD ALLEGIANCE HEALTH.