Dr. Mark D. Gage, DO
- Medicare services, 2024
- 729
- Medicare patients, 2024
- 341
- Part D claims, 2024
- 219
- Hospital affiliations
- 3
- Industry payments
- $446
- Practice address
- 201 South Garnett Road, Tulsa, OK 74128
- Practice phone
- Call (918) 438-4257
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gage'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. Mark D. Gage is a psychiatrist in Tulsa, Oklahoma
Dr. Gage practices at Brookhaven Hospital in Tulsa, Oklahoma, part of Vizion Health.
Dr. Gage's NPI, 1972544138, was assigned on June 9, 2006. Dr. Gage graduated from WesternU College of Osteopathic Medicine of the Pacific in 1991. Dr. Gage holds Oklahoma license 3028.
- NPI
- 1972544138NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577552215
- NPI enumeration date
- June 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (918) 438-4257
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark D. Gage practices at Brookhaven Hospital in Tulsa, Oklahoma
Dr. Gage's primary practice is Brookhaven Hospital, at 201 South Garnett Road, Tulsa, OK 74128 in Tulsa County. The practice phone is (918) 438-4257.
- Brookhaven Hospital201 South Garnett Road, Tulsa, OK 74128 · Tulsa CountyPhone(918) 438-4257
Source: Dmand AI Affiliation Data
Dr. Mark D. Gage is affiliated with 6 sites of care and 5 medical groups
Dr. Gage's primary practice is Brookhaven Hospital in Tulsa, Oklahoma, part of Vizion Health. Dr. Gage is also affiliated with Dardanelle Regional Medical Center. The medical group on file is Access TeleCare. Dmand AI also links Dr. Gage to 1 more hospital, 4 medical groups, 2 group practices and clinics and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark D. Gage's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gage practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brookhaven Hospital | Available with a free account |
| +5 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Mark D. Gage is one of 341 psychiatrists in Oklahoma
Psychiatry is Dr. Gage's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Gage is board certified in addiction medicine by the American Board of Preventive Medicine. Dr. Gage is licensed in Oklahoma.
Specialties and state licenses
- Psychiatry, OklahomaPrimary
Clinical focus
Dmand AI lists dementia, non-alzheimer's dementia (chronic), psychological distress, psychoses and substance abuse among the conditions Dr. Gage treats.
Psychiatrists near Dr. Gage
Counts of psychiatrists 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. Mark D. Gage billed Medicare for 729 services in 2024
CMS data shows 729 Medicare services from Dr. Gage across 7 procedure codes in 2024, for 341 Medicare patients. Medicare paid $54,499 for them. Every service was in an office.
Dr. Gage's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5902024: 49217%
- Other services
- 2023: 1142024: 237108%
Dr. Gage compared with the Oklahoma median for psychiatrists, 2024
- Dr. Gage
- Oklahoma median
- Medicare services
- 729vs 1584.6 times
- Medicare patients
- 341vs 566.1 times
- Part D claims
- 101vs 28865% below
Medians across 333 psychiatrists in Oklahoma with Dmand AI profiles that report each measure.
Dr. Gage'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.
Need commercial claims for Dr. Gage?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gage and other psychiatrists in Oklahoma.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark D. Gage treated 341 Medicare patients in 2024, average age 76
CMS counts 341 Medicare patients who saw Dr. Gage in 2024. The largest group is 75 to 84, with 112 patients. 75% of them have alzheimer's and dementia, and 75% have anxiety. 43% are also on Medicaid. Their average risk score is 1.65, 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. Gage's median patient age at 72, with 61% women.
Dr. Gage's Medicare patients by age, 2024
Dr. Gage's Medicare patients by sex, 2024
- Women20259%
- Men13941%
Chronic conditions among Dr. Gage's Medicare patients, 2024
- Alzheimer's and dementia75%
- Anxiety75%
- Depression75%
- High blood pressure75%
- High cholesterol75%
- Mood disorders75%
- Schizophrenia and other psychoses60%
- Arthritis47%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gage's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark D. Gage wrote 219 Medicare Part D claims in 2024
In 2024, Dr. Gage wrote 219 Medicare Part D claims for 75 patients. 98% of them were for generic drugs. CMS names the drug for 101 of them, across 7 drugs with 11 or more claims each, at $1,715 in total drug cost. In 2023, CMS named 254 claims across 12 drugs.
Dr. Gage's Part D claims by kind of drug, 2024
- Generic215 claims98%
- Brand-name and other4 claims2%
Dr. Gage'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. Gage's Part D claims, 2024
- Antipsychotics, patients 65 and over25%54 of 219 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: 2542024: 10160%
Drugs named by CMS: 7 in 2024, 12 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. Mark D. Gage offers telehealth to Medicare patients
Dr. Gage accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gage as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark D. Gage received $446 in industry payments from 2016 to 2018
CMS Open Payments shows 16 general payments to Dr. Gage from 7 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Vanda Pharmaceuticals Inc. paid the most, $161.
General payments to Dr. Gage by program year, 2016 to 2018
Companies that paid Dr. Gage the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark D. Gage has 1 award and honors on record
Dmand AI lists 1 award for Dr. Gage, most recently Fellow in 2013.
Awards and honors for Dr. Gage
- 2013
- Fellow
Source: Dmand AI Professional Profile Data
Dr. Mark D. Gage graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Gage graduated from WesternU College of Osteopathic Medicine of the Pacific in 1991. Dr. Gage is a member of AOA, APA and ASAM.
- Medical school
- Board certified in addiction medicine
- Board certified in psychiatry
- Board certified in addiction medicine (caq)
- Board certified in psychiatry
- Board certified in 2020 - 2026
- Board certified in 1992 - 2026
Source: Dmand AI Professional Profile Data
Dr. Mark D. Gage accepts plans from 15 insurance carriers
Dr. Gage is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Cigna. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Cigna
- United Healthcare
- Arkansas Blue Cross and Blue Shield
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- +7 more carriersWith a free account
Plan types Dr. Gage accepts, by number of carriers
- PPO10
- Medicare9
- HMO5
- POS5
- Medicaid3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark D. Gage'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Mark D. Gage
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. Mark D. Gage's NPI number?
Dr. Mark D. Gage's NPI number is 1972544138. It was assigned on June 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark D. Gage?
Dr. Mark D. Gage is a psychiatrist in Tulsa, Oklahoma. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Mark D. Gage practice?
Dr. Gage practices at 201 South Garnett Road, Tulsa, OK 74128. Dr. Gage's primary practice is Brookhaven Hospital in Tulsa, Oklahoma, part of Vizion Health. Dmand AI also links Dr. Gage to 1 hospital, 4 medical groups, 2 group practices and clinics and 1 physician office.
What is Dr. Mark D. Gage's office phone number?
The practice phone on file for Dr. Gage is (918) 438-4257.
What is Dr. Mark D. Gage's medical license number?
Dr. Gage holds Oklahoma license 3028.
Which hospitals is Dr. Mark D. Gage affiliated with?
Dr. Gage practices at Brookhaven Hospital in Tulsa, Oklahoma. Dr. Gage is also affiliated with Dardanelle Regional Medical Center. Dmand AI links Dr. Gage to 1 more hospital.
What medical group is Dr. Mark D. Gage part of?
Dr. Gage is linked to Access TeleCare. Dmand AI links Dr. Gage to 4 more medical groups.
Does Dr. Mark D. Gage accept Medicare?
Yes. CMS data shows Dr. Gage billed Medicare for 729 services in 2024, and Dr. Gage accepts Medicare assignment.
Does Dr. Mark D. Gage offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Gage as offering telehealth services.
How many Medicare patients does Dr. Mark D. Gage see?
CMS counts 341 Medicare patients who saw Dr. Gage in 2024, with an average age of 76.
Show 7 more questionsShow fewer questions
Is Dr. Mark D. Gage board certified?
Yes. Dr. Gage is board certified in addiction medicine by the American Board of Preventive Medicine.
What services does Dr. Mark D. Gage bill to Medicare?
In 2024, Dr. Gage's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and medicare service (G0408).
Where did Dr. Mark D. Gage go to medical school?
Dr. Gage graduated from WesternU College of Osteopathic Medicine of the Pacific in 1991.
What drugs does Dr. Mark D. Gage prescribe most?
In 2024 Medicare Part D data, Dr. Gage's most prescribed drugs by claims were Risperidone, Trazodone HCl and Divalproex Sodium.
Has Dr. Mark D. Gage received payments from drug or device companies?
CMS Open Payments shows $446 in general payments to Dr. Gage from 7 companies from 2016 to 2018. The largest total came from Vanda Pharmaceuticals Inc.
How long has Dr. Mark D. Gage been practicing?
Dr. Gage graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Mark D. Gage accept?
Dr. Gage is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Cigna. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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