Dr. William Knight Gray, MD
- Medicare services, 2024
- 713
- Medicare patients, 2024
- 449
- Part D claims, 2024
- 129
- Hospital affiliations
- 5
- Industry payments
- $1,998
- Practice address
- 1120 South Utica Avenue, Tulsa, OK 74104
- Practice phone
- Call (918) 579-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gray's professional email, personal email and mobile number
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Dr. William Knight Gray is an emergency medicine physician in Tulsa, Oklahoma
Dr. Gray practices at Hillcrest Medical Center in Tulsa, Oklahoma, part of Ardent Health.
Dr. Gray's NPI, 1891786000, was assigned on November 4, 2005. Dr. Gray graduated from University of Oklahoma College of Medicine in 1982. Dr. Gray holds Oklahoma license 14400.
- NPI
- 1891786000NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709852684
- NPI enumeration date
- November 4, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (918) 579-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Knight Gray practices at Hillcrest Medical Center in Tulsa, Oklahoma
Dr. Gray's primary practice is Hillcrest Medical Center, at 1120 South Utica Avenue, Tulsa, OK 74104 in Tulsa County. The practice phone is (918) 579-1000.
- Hillcrest Medical Center1120 South Utica Avenue, Tulsa, OK 74104 · Tulsa CountyPhone(918) 579-1000
Source: Dmand AI Affiliation Data
Dr. William Knight Gray is affiliated with 5 sites of care and 7 medical groups
Dr. Gray's primary practice is Hillcrest Medical Center in Tulsa, Oklahoma, part of Ardent Health. Dr. Gray is also affiliated with Council Oak Comprehensive Healthcare. The medical group on file is Mercy Clinic Oklahoma Communities. Dmand AI also links Dr. Gray to 3 more hospitals and 6 medical groups, 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. William Knight Gray's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gray practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hillcrest Medical Center | Available with a free account |
| +4 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Ardent Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Knight Gray is one of 695 emergency medicine physicians in Oklahoma
Emergency medicine is Dr. Gray's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Gray is licensed in Oklahoma.
Specialties and state licenses
- Emergency medicine, OklahomaPrimary
Emergency medicine physicians near Dr. Gray
Counts of emergency medicine physicians 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. William Knight Gray billed Medicare for 713 services in 2024
CMS data shows 713 Medicare services from Dr. Gray across 4 procedure codes in 2024, for 449 Medicare patients. Medicare paid $60,280 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gray's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4582024: 4662%
- Tests and treatments
- 2023: 1672024: 24748%
Dr. Gray compared with the Oklahoma median for emergency medicine physicians, 2024
- Dr. Gray
- Oklahoma median
- Medicare services
- 713vs 3242.2 times
- Medicare patients
- 449vs 29453% above
- Part D claims
- 39vs 8856% below
Medians across 669 emergency medicine physicians in Oklahoma with Dmand AI profiles that report each measure.
Dr. Gray'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Knight Gray treated 449 Medicare patients in 2024, average age 72
CMS counts 449 Medicare patients who saw Dr. Gray in 2024. The largest group is 65 to 74, with 182 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 2.75, 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. Gray's median patient age at 57, with 55% women.
Dr. Gray's Medicare patients by age, 2024
Dr. Gray's Medicare patients by sex, 2024
- Women22450%
- Men22550%
Chronic conditions among Dr. Gray's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Mood disorders50%
- Ischemic heart disease49%
- Heart failure48%
- Depression47%
- Diabetes47%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gray's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Knight Gray wrote 129 Medicare Part D claims in 2024
In 2024, Dr. Gray wrote 129 Medicare Part D claims for 99 patients. 95% of them were for generic drugs. CMS names the drug for 39 of them, across 2 drugs with 11 or more claims each, at $220 in total drug cost. In 2023, CMS named 24 claims across 1 drug.
Dr. Gray's Part D claims by kind of drug, 2024
- Generic123 claims95%
- Brand-name and other6 claims5%
Dr. Gray'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. Gray's Part D claims, 2024
- Opioids19%24 of 129 claims
- Antibiotics39%50 of 129 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: 242024: 3963%
Drugs named by CMS: 2 in 2024, 1 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. William Knight Gray takes part in Medicare
Dr. Gray 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. William Knight Gray received $1,998 in industry payments from 2017 to 2025
CMS Open Payments shows 48 general payments to Dr. Gray from 12 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $557.
General payments to Dr. Gray by program year, 2017 to 2025
Companies that paid Dr. Gray the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Knight Gray graduated from University of Oklahoma College of Medicine
Dr. Gray graduated from University of Oklahoma College of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Knight Gray'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) |
| 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. William Knight Gray
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. William Knight Gray's NPI number?
Dr. William Knight Gray's NPI number is 1891786000. It was assigned on November 4, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William Knight Gray?
Dr. William Knight Gray is an emergency medicine physician in Tulsa, Oklahoma. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. William Knight Gray practice?
Dr. Gray practices at 1120 South Utica Avenue, Tulsa, OK 74104. Dr. Gray's primary practice is Hillcrest Medical Center in Tulsa, Oklahoma, part of Ardent Health. Dmand AI also links Dr. Gray to 3 hospitals and 6 medical groups.
What is Dr. William Knight Gray's office phone number?
The practice phone on file for Dr. Gray is (918) 579-1000.
What is Dr. William Knight Gray's medical license number?
Dr. Gray holds Oklahoma license 14400.
Which hospitals is Dr. William Knight Gray affiliated with?
Dr. Gray practices at Hillcrest Medical Center in Tulsa, Oklahoma. Dr. Gray is also affiliated with Council Oak Comprehensive Healthcare. Dmand AI links Dr. Gray to 3 more hospitals.
What medical group is Dr. William Knight Gray part of?
Dr. Gray is linked to Mercy Clinic Oklahoma Communities. Dmand AI links Dr. Gray to 6 more medical groups.
Does Dr. William Knight Gray accept Medicare?
Yes. CMS data shows Dr. Gray billed Medicare for 713 services in 2024, and Dr. Gray accepts Medicare assignment.
How many Medicare patients does Dr. William Knight Gray see?
CMS counts 449 Medicare patients who saw Dr. Gray in 2024, with an average age of 72.
What services does Dr. William Knight Gray bill to Medicare?
In 2024, Dr. Gray's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
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Where did Dr. William Knight Gray go to medical school?
Dr. Gray graduated from University of Oklahoma College of Medicine in 1982.
What drugs does Dr. William Knight Gray prescribe most?
In 2024 Medicare Part D data, Dr. Gray's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Cephalexin.
Has Dr. William Knight Gray received payments from drug or device companies?
CMS Open Payments shows $1,998 in general payments to Dr. Gray from 12 companies from 2017 to 2025. The largest total came from Inari Medical, Inc.
How long has Dr. William Knight Gray been practicing?
Dr. Gray graduated from medical school in 1982, 44 years ago.
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