Mark R. Gillen, PA
- Medicare patients, 2024
- 848
- Part D claims, 2024
- 1,969
- Hospital affiliations
- 2
- Industry payments
- $113
- Medical group
- 1
- Practice address
- 6600 S Yale E Ave, Tulsa, OK 74136
- Practice phone
- Call (918) 488-6001
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Warren Clinic Inc
Tulsa, Oklahoma
Find Mark Gillen'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.
Mark R. Gillen is a physician assistant in Tulsa, Oklahoma
Mark Gillen practices at Warren Clinic Inc in Tulsa, Oklahoma.
Mark Gillen's NPI, 1609833078, was assigned on April 28, 2006. Mark Gillen holds Oklahoma license 1178.
- NPI
- 1609833078NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991607574
- NPI enumeration date
- April 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (918) 488-6001
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark R. Gillen practices at Warren Clinic Inc in Tulsa, Oklahoma
Mark Gillen's primary practice is Warren Clinic Inc, at 6600 S Yale E Ave, Tulsa, OK 74136 in Tulsa County. The practice phone is (918) 488-6001.
- Warren Clinic Inc6600 S Yale E Ave, Tulsa, OK 74136 · Tulsa CountyPhone(918) 488-6001
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mark R. Gillen is affiliated with 4 sites of care and 1 medical group
Mark Gillen's primary practice is Warren Clinic Inc in Tulsa, Oklahoma. Mark Gillen is also affiliated with Saint Francis Hospital. The medical group on file is Warren Clinic. Dmand AI also links Mark Gillen to 1 more hospital and 1 group practice or clinic, 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 Mark R. Gillen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Gillen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Warren Clinic Inc | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark R. Gillen is one of 1,545 physician assistants in Oklahoma
Physician assistant is Mark Gillen's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Mark Gillen is licensed in Oklahoma.
Specialties and state licenses
- Physician assistant, OklahomaPrimary
Physician assistants near Mark Gillen
Counts of physician assistants 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
Mark R. Gillen treated 848 Medicare patients in 2024, average age 74
CMS counts 848 Medicare patients who saw Mark Gillen in 2024. The largest group is 65 to 74, with 370 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Gillen's median patient age at 48, with 59% women.
Mark Gillen's Medicare patients by age, 2024
Mark Gillen's Medicare patients by sex, 2024
- Women53863%
- Men31037%
Chronic conditions among Mark Gillen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis47%
- Mood disorders29%
- Depression27%
- Ischemic heart disease26%
- Anxiety25%
- Chronic kidney disease25%
Share of Medicare patients with each condition. A patient can have several.
Mark Gillen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark R. Gillen wrote 1,969 Medicare Part D claims in 2024
In 2024, Mark Gillen wrote 1,969 Medicare Part D claims for 1,155 patients. 92% of them were for generic drugs.
Mark Gillen's Part D claims by kind of drug, 2024
- Generic1,802 claims92%
- Brand-name and other167 claims8%
Drug classes CMS tracks in Mark Gillen's Part D claims, 2024
- Opioids4%69 of 1,969 claims
- Antibiotics37%733 of 1,969 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mark R. Gillen offers telehealth to Medicare patients
Mark Gillen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Mark Gillen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Mark R. Gillen received $113 in industry payments in 2025
CMS Open Payments shows 6 general payments to Mark Gillen from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $51.
Companies that paid Mark Gillen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mark R. Gillen'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 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 (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) |
| 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 Mark R. Gillen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark R. Gillen's NPI number?
Mark R. Gillen's NPI number is 1609833078. It was assigned on April 28, 2006, and it is active in the NPI Registry.
What does Mark R. Gillen specialize in?
Mark R. Gillen is a physician assistant in Tulsa, Oklahoma. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Mark R. Gillen practice?
Mark Gillen practices at 6600 S Yale E Ave, Tulsa, OK 74136. Mark Gillen's primary practice is Warren Clinic Inc in Tulsa, Oklahoma. Dmand AI also links Mark Gillen to 1 hospital and 1 group practice or clinic.
What is Mark R. Gillen's office phone number?
The practice phone on file for Mark Gillen is (918) 488-6001.
What is Mark R. Gillen's medical license number?
Mark Gillen holds Oklahoma license 1178.
Which hospitals is Mark R. Gillen affiliated with?
Mark Gillen is affiliated with Saint Francis Hospital. Dmand AI links Mark Gillen to 1 more hospital.
What medical group is Mark R. Gillen part of?
Mark Gillen is linked to Warren Clinic.
Does Mark R. Gillen accept Medicare?
Yes. CMS lists Mark Gillen as accepting Medicare assignment.
Does Mark R. Gillen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Mark Gillen as offering telehealth services.
How many Medicare patients does Mark R. Gillen see?
CMS counts 848 Medicare patients who saw Mark Gillen in 2024, with an average age of 74.
Has Mark R. Gillen received payments from drug or device companies?
CMS Open Payments shows $113 in general payments to Mark Gillen from 4 companies from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Mark R. Gillen been practicing?
Mark Gillen graduated from medical school in 2001, 25 years ago.
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