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Dr. Willis Holloway Jr., MD
NPI1023054434PAC ID9830085869
- Medicare services, 2024
- 118
- Medicare patients, 2024
- 81
- Part D claims, 2024
- 1,367
- Clinical trials
- 10
- Hospital affiliations
- 1
- Practice address
- 6613 N Meridian Ave, Oklahoma City, OK 73116
- Practice phone
- Call (405) 603-8450
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Holloway Group Inc
Oklahoma City, Oklahoma
Find Dr. Holloway's professional email, personal email and mobile number
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Dr. Willis Holloway Jr. is a psychiatrist in Oklahoma City, Oklahoma
Dr. Holloway practices at Holloway Group Inc in Oklahoma City, Oklahoma.
Dr. Holloway's NPI, 1023054434, was assigned on June 22, 2006. Dr. Holloway graduated from University of Oklahoma College of Medicine in 1984. Dr. Holloway holds Oklahoma license 15256.
NPI and contact details
- NPI
- 1023054434NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830085869
- NPI enumeration date
- June 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (405) 603-8450
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Willis Holloway Jr. practices at Holloway Group Inc in Oklahoma City, Oklahoma
Dr. Holloway's primary practice is Holloway Group Inc, at 6613 N Meridian Ave, Oklahoma City, OK 73116 in Oklahoma County. The practice phone is (405) 603-8450.
- Holloway Group Inc6613 N Meridian Ave, Oklahoma City, OK 73116 · Oklahoma CountyPhone(405) 603-8450
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Willis Holloway Jr. is affiliated with 3 sites of care and 2 medical groups
Dr. Holloway's primary practice is Holloway Group Inc in Oklahoma City, Oklahoma. Dr. Holloway is also affiliated with Oakwood Springs. The medical group on file is Oakwood Springs Physician Group. Dmand AI also links Dr. Holloway to 1 more group practice or clinic and 1 medical group, each named with a free account.
Holloway Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Willis Holloway Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holloway practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Holloway Group Inc | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Willis Holloway Jr. is one of 341 psychiatrists in Oklahoma
Psychiatry is Dr. Holloway's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Holloway is licensed in Oklahoma.
Specialties and state licenses
- Psychiatry, OklahomaPrimary
Psychiatrists near Dr. Holloway
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. Willis Holloway Jr. billed Medicare for 118 services in 2024
CMS data shows 118 Medicare services from Dr. Holloway across 2 procedure codes in 2024, for 81 Medicare patients. Medicare paid $3,131 for them. Every service was in an office.
Medicare services, 2024118
Medicare patients81
Paid by Medicare$3,131
Procedure codes2
Dr. Holloway's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 652024: 8125%
- Lab and pathology
- 2023: 02024: 37
- Other services
- 2023: 272024: 0100%
Dr. Holloway compared with the Oklahoma median for psychiatrists, 2024
- Dr. Holloway
- Oklahoma median
- Medicare services
- 118vs 15825% below
- Medicare patients
- 81vs 5645% above
- Part D claims
- 1,145vs 2884.0 times
Medians across 333 psychiatrists in Oklahoma with Dmand AI profiles that report each measure.
Dr. Holloway'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. Holloway and other psychiatrists in Oklahoma.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Willis Holloway Jr. treated 81 Medicare patients in 2024, average age 55
CMS counts 81 Medicare patients who saw Dr. Holloway in 2024. The largest group is under 65, with 58 patients. 75% of them have anxiety, and 75% have mood disorders. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Holloway's median patient age at 41, with 67% women.
Medicare patients, 202481
Average age55
Average risk score1.18
Dr. Holloway's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Holloway's Medicare patients by sex, 2024
- Women3240%
- Men4960%
Chronic conditions among Dr. Holloway's Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- High blood pressure67%
- Depression63%
- Bipolar disorder49%
- High cholesterol44%
- ADHD and conduct disorders42%
- Schizophrenia and other psychoses37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Holloway's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Willis Holloway Jr. wrote 1,367 Medicare Part D claims in 2024
In 2024, Dr. Holloway wrote 1,367 Medicare Part D claims for 151 patients. 89% of them were for generic drugs. CMS names the drug for 1,145 of them, across 26 drugs with 11 or more claims each, at $64,182 in total drug cost. In 2023, CMS named 2,712 claims across 70 drugs.
Part D claims, 20241,367
Drugs named by CMS26
Total drug cost$64,182
Part D patients151
Dr. Holloway's Part D claims by kind of drug, 2024
- Generic1,217 claims89%
- Brand-name150 claims11%
Dr. Holloway'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. Holloway's Part D claims, 2024
- Antipsychotics, patients 65 and over2%30 of 1,367 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: 2,7122024: 1,14558%
Drugs named by CMS: 26 in 2024, 70 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. Willis Holloway Jr. offers telehealth to Medicare patients
Dr. Holloway accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Holloway as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Willis Holloway Jr. has worked on 10 clinical trials
Dmand AI links Dr. Holloway to 10 clinical trials, 2 of them phase 3 studies. Conditions studied include Schizophrenia, Schizophrenia Spectrum and Other Psychotic Disorders and Attention Deficit Disorder with Hyperactivity. ACADIA Pharmaceuticals Inc. sponsors the most, 3. Open Payments lists research payments to Dr. Holloway that name 6 trials.
Clinical trials with Dr. Holloway by phase
- NonePhase 1: no trials
- NonePhase 2: no trials
- 2Phase 3: 2 trials
- 1Phase 4: 1 trial
Conditions in Dr. Holloway's trials
- Schizophrenia
- Schizophrenia Spectrum and Other Psychotic Disorders
- Attention Deficit Disorder with Hyperactivity
- Attention Deficit and Disruptive Behavior Disorders
- Autistic Disorder
Investigators on the most trials with Dr. Holloway
- Walter J. Duffy, MD5 shared trials
- Kashinath Gangadhara Yadalam, MD5 shared trials
- Sarah D. Atkinson, MD4 shared trials
Recent clinical trials with Dr. Holloway
A Study of TAK-503 in Children and Teenagers With Attention Deficit Hyperactivity Disorder (ADHD) (opens in a new tab)
CompletedPhase 4
Attention Deficit Disorder with HyperactivityAttention Deficit and Disruptive Behavior DisordersAtomoxetine hydrochlorideGuanfacine hydrochloride (TAK-503)
A Trial in Adult Participants With Schizophrenia Treated Prospectively for 6-months With Abilify MyCite® (opens in a new tab)
TerminatedPhase 3
SchizophreniaSchizophrenia Spectrum and Other Psychotic DisordersAbilify MyCite®
$10,080 in research paymentsSchizophreniaSchizophrenia Spectrum and Other Psychotic DisordersPimavanserin
Autistic DisorderBipolar and Related DisordersLurasidone 20, 40, 60, 80 mg, flexibly dosed
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Willis Holloway Jr. received $271,218 in industry payments from 2016 to 2025
CMS Open Payments shows 582 general payments to Dr. Holloway from 29 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 88% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $226,282. It also lists 21 research payments totaling $54,096 from 2016 to 2018, naming 6 clinical trials.
General payments to Dr. Holloway by program year, 2016 to 2025
General payments to Dr. Holloway by kind, 2016 to 2025
$271.2Kin total
- Speaker and faculty fees$238,23088%
- Travel and lodging$22,2558%
- Food and beverage$10,0104%
- Consulting fees$7200%
- Education$30%
Companies that paid Dr. Holloway the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Willis Holloway Jr. graduated from University of Oklahoma College of Medicine
Dr. Holloway graduated from University of Oklahoma College of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Willis Holloway Jr.'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) |
| Clinical trials and co-investigators | ClinicalTrials.gov (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. Willis Holloway Jr.
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. Willis Holloway Jr.'s NPI number?
Dr. Willis Holloway Jr.'s NPI number is 1023054434. It was assigned on June 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Willis Holloway Jr.?
Dr. Willis Holloway Jr. is a psychiatrist in Oklahoma City, Oklahoma. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Willis Holloway Jr. practice?
Dr. Holloway practices at 6613 N Meridian Ave, Oklahoma City, OK 73116. Dr. Holloway's primary practice is Holloway Group Inc in Oklahoma City, Oklahoma. Dmand AI also links Dr. Holloway to 1 group practice or clinic and 1 medical group.
What is Dr. Willis Holloway Jr.'s office phone number?
The practice phone on file for Dr. Holloway is (405) 603-8450.
What is Dr. Willis Holloway Jr.'s medical license number?
Dr. Holloway holds Oklahoma license 15256.
Which hospitals is Dr. Willis Holloway Jr. affiliated with?
Dr. Holloway is affiliated with Oakwood Springs.
What medical group is Dr. Willis Holloway Jr. part of?
Dr. Holloway is linked to Oakwood Springs Physician Group. Dmand AI links Dr. Holloway to 1 more medical group.
Does Dr. Willis Holloway Jr. accept Medicare?
Yes. CMS data shows Dr. Holloway billed Medicare for 118 services in 2024, and Dr. Holloway accepts Medicare assignment.
Does Dr. Willis Holloway Jr. offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Holloway as offering telehealth services.
How many Medicare patients does Dr. Willis Holloway Jr. see?
CMS counts 81 Medicare patients who saw Dr. Holloway in 2024, with an average age of 55.
Show 6 more questionsShow fewer questions
What services does Dr. Willis Holloway Jr. bill to Medicare?
In 2024, Dr. Holloway's most billed Medicare services were home visit (99347) and lab and pathology test (80305).
Where did Dr. Willis Holloway Jr. go to medical school?
Dr. Holloway graduated from University of Oklahoma College of Medicine in 1984.
What drugs does Dr. Willis Holloway Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Holloway's most prescribed drugs by claims were Dextroamphetamine-Amphetamine, Clozapine and Clonazepam.
Has Dr. Willis Holloway Jr. received payments from drug or device companies?
CMS Open Payments shows $271,218 in general payments to Dr. Holloway from 29 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Willis Holloway Jr. been practicing?
Dr. Holloway graduated from medical school in 1984, 42 years ago.
Does Dr. Willis Holloway Jr. do research?
Dr. Holloway has worked on 10 clinical trials.
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