Dr. Gregory Wayne Rouan, MD
- Medicare services, 2024
- 770
- Medicare patients, 2024
- 142
- Part D claims, 2024
- 1,994
- Publications
- 2
- Hospital affiliations
- 3
- Practice address
- 3188 Bellevue Ave, Cincinnati, OH 45219
- Practice phone
- Call (513) 584-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UC Medical Center
Cincinnati, Ohio
Find Dr. Rouan's 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. Gregory Wayne Rouan is an internist in Cincinnati, Ohio
Dr. Rouan practices at UC Medical Center in Cincinnati, Ohio.
Dr. Rouan's NPI, 1023066222, was assigned on May 4, 2006. Dr. Rouan graduated from University of Cincinnati College of Medicine in 1980. Dr. Rouan holds Ohio license 35-046436.
- NPI
- 1023066222NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193616860
- NPI enumeration date
- May 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (513) 584-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Wayne Rouan practices at UC Medical Center in Cincinnati, Ohio
Dr. Rouan's primary practice is UC Medical Center, at 3188 Bellevue Ave, Cincinnati, OH 45219 in Hamilton County. The practice phone is (513) 584-1000.
- UC Medical Center3188 Bellevue Ave, Cincinnati, OH 45219 · Hamilton CountyPhone(513) 584-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory Wayne Rouan is affiliated with 6 sites of care and 2 medical groups
Dr. Rouan's primary practice is UC Medical Center in Cincinnati, Ohio. Dr. Rouan is also affiliated with University of Cincinnati Medical Center. The medical group on file is University of Cincinnati Physicians. Dmand AI also links Dr. Rouan to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory Wayne Rouan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rouan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UC Medical Center | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Wayne Rouan is one of 4,708 internists in Ohio
Internal medicine is Dr. Rouan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Rouan is licensed in Ohio.
Specialties and state licenses
- Internal medicine, OhioPrimary
Internists near Dr. Rouan
Counts of internists 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. Gregory Wayne Rouan billed Medicare for 770 services in 2024
CMS data shows 770 Medicare services from Dr. Rouan across 6 procedure codes in 2024, for 142 Medicare patients. Medicare paid $21,875 for them. Every service was in an office.
Dr. Rouan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3002024: 40836%
- Other services
- 2023: 1362024: 362166%
- Tests and treatments
- 2023: 302024: 0100%
Dr. Rouan compared with the Ohio median for internists, 2024
- Dr. Rouan
- Ohio median
- Medicare services
- 770vs 48758% above
- Medicare patients
- 142vs 19226% below
- Part D claims
- 1,584vs 2945.4 times
Medians across 4,703 internists in Ohio with Dmand AI profiles that report each measure.
Dr. Rouan's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rouan and other internists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Wayne Rouan treated 142 Medicare patients in 2024, average age 77
CMS counts 142 Medicare patients who saw Dr. Rouan in 2024. The largest group is 75 to 84, with 61 patients. 75% of them have high cholesterol, and 72% have high blood pressure. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rouan's median patient age at 76, with 33% women.
Dr. Rouan's Medicare patients by age, 2024
Dr. Rouan's Medicare patients by sex, 2024
- Women4632%
- Men9668%
Chronic conditions among Dr. Rouan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis41%
- Ischemic heart disease39%
- Atrial fibrillation24%
- Cancer20%
- Osteoporosis20%
- Diabetes18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rouan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women33%
- Men66%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Wayne Rouan wrote 1,994 Medicare Part D claims in 2024
In 2024, Dr. Rouan wrote 1,994 Medicare Part D claims for 165 patients. 87% of them were for generic drugs. CMS names the drug for 1,584 of them, across 39 drugs with 11 or more claims each, at $117,673 in total drug cost. In 2023, CMS named 1,428 claims across 40 drugs.
Dr. Rouan's Part D claims by kind of drug, 2024
- Generic1,738 claims87%
- Brand-name and other256 claims13%
Dr. Rouan's 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.
Drug classes CMS tracks in Dr. Rouan's Part D claims, 2024
- Antibiotics2%40 of 1,994 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,4282024: 1,58411%
Drugs named by CMS: 39 in 2024, 40 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
How Dr. Gregory Wayne Rouan takes part in Medicare
Dr. Rouan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory Wayne Rouan has 2 publications on record
Dmand AI links 2 papers to Dr. Rouan, published from 2011 to 2023. Dr. Rouan's most frequent co-authors are Daniel Patrick Schauer, MD, Carl Jack Fichtenbaum, MD and Eric Stephen Holmboe, MD.
Dr. Rouan's most frequent co-authors
- Daniel Patrick Schauer, MD2 shared papers
- Carl Jack Fichtenbaum, MD1 shared paper
- Eric Stephen Holmboe, MD1 shared paper
Recent publications by Dr. Rouan
See who Dr. Rouan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rouan works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory Wayne Rouan received $1,589 in industry payments from 2018 to 2021
CMS Open Payments shows 3 general payments to Dr. Rouan from 2 drug and device companies from 2018 to 2021. Speaker and faculty fees make up the largest share, 94% of the total. Bausch Health Americas, Inc. paid the most, $1,500.
General payments to Dr. Rouan by program year, 2018 to 2021
General payments to Dr. Rouan by kind, 2018 to 2021
- Speaker and faculty fees$1,50094%
- Food and beverage$896%
Companies that paid Dr. Rouan the most, 2018 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Wayne Rouan graduated from University of Cincinnati College of Medicine
Dr. Rouan graduated from University of Cincinnati College of Medicine in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Wayne Rouan'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Gregory Wayne Rouan
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. Gregory Wayne Rouan's NPI number?
Dr. Gregory Wayne Rouan's NPI number is 1023066222. It was assigned on May 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Wayne Rouan?
Dr. Gregory Wayne Rouan is an internist in Cincinnati, Ohio. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gregory Wayne Rouan practice?
Dr. Rouan practices at 3188 Bellevue Ave, Cincinnati, OH 45219. Dr. Rouan's primary practice is UC Medical Center in Cincinnati, Ohio. Dmand AI also links Dr. Rouan to 2 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Gregory Wayne Rouan's office phone number?
The practice phone on file for Dr. Rouan is (513) 584-1000.
What is Dr. Gregory Wayne Rouan's medical license number?
Dr. Rouan holds Ohio license 35-046436.
Which hospitals is Dr. Gregory Wayne Rouan affiliated with?
Dr. Rouan is affiliated with University of Cincinnati Medical Center. Dmand AI links Dr. Rouan to 2 more hospitals.
What medical group is Dr. Gregory Wayne Rouan part of?
Dr. Rouan is linked to University of Cincinnati Physicians. Dmand AI links Dr. Rouan to 1 more medical group.
Does Dr. Gregory Wayne Rouan accept Medicare?
Yes. CMS data shows Dr. Rouan billed Medicare for 770 services in 2024, and Dr. Rouan accepts Medicare assignment.
How many Medicare patients does Dr. Gregory Wayne Rouan see?
CMS counts 142 Medicare patients who saw Dr. Rouan in 2024, with an average age of 77.
What services does Dr. Gregory Wayne Rouan bill to Medicare?
In 2024, Dr. Rouan's most billed Medicare services were office visit, established patient (99213), medicare service (G2211) and medicare service (G0439).
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Where did Dr. Gregory Wayne Rouan go to medical school?
Dr. Rouan graduated from University of Cincinnati College of Medicine in 1980.
What drugs does Dr. Gregory Wayne Rouan prescribe most?
In 2024 Medicare Part D data, Dr. Rouan's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Levothyroxine Sodium.
Has Dr. Gregory Wayne Rouan received payments from drug or device companies?
CMS Open Payments shows $1,589 in general payments to Dr. Rouan from 2 companies from 2018 to 2021. The largest total came from Bausch Health Americas, Inc.
How long has Dr. Gregory Wayne Rouan been practicing?
Dr. Rouan graduated from medical school in 1980, 46 years ago.
Does Dr. Gregory Wayne Rouan do research?
Dmand AI links 2 publications to Dr. Rouan, published from 2011 to 2023.
Who does Dr. Gregory Wayne Rouan publish with?
Dr. Rouan's most frequent co-authors are Daniel Patrick Schauer, MD (2 shared papers), Carl Jack Fichtenbaum, MD (1 shared paper) and Eric Stephen Holmboe, MD (1 shared paper).
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