Dr. Rory Marcus Marks, MD
- Medicare services, 2024
- 70
- Medicare patients, 2024
- 64
- Part D claims, 2024
- 335
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital
School-Based Health Center · Ann Arbor, Michigan
Find Dr. Marks' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Rory Marcus Marks is a rheumatologist in Ann Arbor, Michigan
Dr. Marks practices at University Hospital in Ann Arbor, Michigan.
Dr. Marks' NPI, 1578648184, was assigned on October 25, 2006. Dr. Marks holds Michigan license 4301500082.
- NPI
- 1578648184NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507991874
- NPI enumeration date
- October 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rory Marcus Marks practices at University Hospital in Ann Arbor, Michigan
Dr. Marks' primary practice is University Hospital, at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The practice phone is (734) 936-4000.
- University Hospital1500 E Medical Center Dr, Ann Arbor, MI 48109Phone(734) 936-4000
Source: Dmand AI Affiliation Data
Dr. Rory Marcus Marks is affiliated with 2 sites of care and 1 medical group
Dr. Marks' primary practice is University Hospital in Ann Arbor, Michigan. Dr. Marks is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dr. Marks' employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Rory Marcus Marks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marks practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rory Marcus Marks is one of 203 rheumatologists in Michigan
Rheumatology is Dr. Marks' primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Marks is licensed in Michigan.
Specialties and state licenses
- Rheumatology, MichiganPrimary
Rheumatologists near Dr. Marks
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Rory Marcus Marks billed Medicare for 70 services in 2024
CMS data shows 70 Medicare services from Dr. Marks across 3 procedure codes in 2024, for 64 Medicare patients. Medicare paid $4,256 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marks' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 462024: 4111%
- Other services
- 2023: 02024: 29
Dr. Marks compared with the Michigan median for rheumatologists, 2024
- Dr. Marks
- Michigan median
- Medicare services
- 70vs 40083% below
- Medicare patients
- 64vs 16260% below
- Part D claims
- 299vs 1,19975% below
Medians across 198 rheumatologists in Michigan with Dmand AI profiles that report each measure.
Dr. Marks' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Marks?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marks and other rheumatologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Rory Marcus Marks treated 64 Medicare patients in 2024, average age 70
CMS counts 64 Medicare patients who saw Dr. Marks in 2024. The largest group is 65 to 74, with 32 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 2.34, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Marks' median patient age at 61, with 63% women.
Dr. Marks' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marks' Medicare patients by sex, 2024
- Women4063%
- Men2438%
Chronic conditions among Dr. Marks' Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol69%
- Chronic kidney disease44%
- Mood disorders39%
- Depression38%
- Heart failure33%
- Diabetes31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rory Marcus Marks wrote 335 Medicare Part D claims in 2024
In 2024, Dr. Marks wrote 335 Medicare Part D claims for 44 patients. 64% of them were for generic drugs. CMS names the drug for 299 of them, across 13 drugs with 11 or more claims each, at $724,609 in total drug cost. In 2023, CMS named 323 claims across 11 drugs.
Dr. Marks' Part D claims by kind of drug, 2024
- Generic214 claims64%
- Brand-name121 claims36%
Dr. Marks' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3232024: 2997%
Drugs named by CMS: 13 in 2024, 11 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Rory Marcus Marks offers telehealth to Medicare patients
Dr. Marks accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marks as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Rory Marcus Marks has 2 publications on record
Dmand AI links 2 papers to Dr. Marks in 2017. 2017 was the busiest year, with 2. Dr. Marks' most frequent co-authors are John Zaven Ayanian, MD, Amit Singal, MD and Akbar Karim Waljee, MD.
Dr. Marks' most frequent co-authors
- John Zaven Ayanian, MD1 shared paper
- Amit Singal, MD1 shared paper
- Akbar Karim Waljee, MD1 shared paper
Recent publications by Dr. Marks
See who Dr. Marks researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Marks works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Rory Marcus Marks received $16 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Marks from 1 drug or device company in 2018. Education make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $16.
Companies that paid Dr. Marks the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Rory Marcus Marks's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Rory Marcus Marks
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Rory Marcus Marks' NPI number?
Dr. Rory Marcus Marks' NPI number is 1578648184. It was assigned on October 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Rory Marcus Marks?
Dr. Rory Marcus Marks is a rheumatologist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Rory Marcus Marks practice?
Dr. Marks practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Marks' primary practice is University Hospital in Ann Arbor, Michigan.
What is Dr. Rory Marcus Marks' office phone number?
The practice phone on file for Dr. Marks is (734) 936-4000.
What is Dr. Rory Marcus Marks' medical license number?
Dr. Marks holds Michigan license 4301500082.
Which hospitals is Dr. Rory Marcus Marks affiliated with?
Dr. Marks is affiliated with University Hospital.
What medical group is Dr. Rory Marcus Marks part of?
Dr. Marks is linked to University of Michigan Health.
Does Dr. Rory Marcus Marks accept Medicare?
Yes. CMS data shows Dr. Marks billed Medicare for 70 services in 2024, and Dr. Marks accepts Medicare assignment.
Does Dr. Rory Marcus Marks offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Marks as offering telehealth services.
How many Medicare patients does Dr. Rory Marcus Marks see?
CMS counts 64 Medicare patients who saw Dr. Marks in 2024, with an average age of 70.
Show 6 more questionsShow fewer questions
What services does Dr. Rory Marcus Marks bill to Medicare?
In 2024, Dr. Marks' most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and hospital inpatient care (99223).
What drugs does Dr. Rory Marcus Marks prescribe most?
In 2024 Medicare Part D data, Dr. Marks' most prescribed drugs by claims were Prednisone, Actemra Actpen and Hydroxychloroquine Sulfate.
Has Dr. Rory Marcus Marks received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Marks from 1 company from 2018 to 2018. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Rory Marcus Marks been practicing?
Dr. Marks graduated from medical school in 1977, 49 years ago.
Does Dr. Rory Marcus Marks do research?
Dmand AI links 2 publications to Dr. Marks.
Who does Dr. Rory Marcus Marks publish with?
Dr. Marks' most frequent co-authors are John Zaven Ayanian, MD (1 shared paper), Amit Singal, MD (1 shared paper) and Akbar Karim Waljee, MD (1 shared paper).
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