$16,133 in research paymentsPimavanserin tartrate (ACP-103)
Dr. William D. Grainger, MD
NPI1003963679
- Medicare services, 2022
- 556
- Part D claims, 2024
- 27
- Clinical trials
- 1
- Hospital affiliations
- 1
- Industry payments
- $563,208
- Practice address
- 37000 North Gantzel Road, Queen Creek, AZ 85140
- Practice phone
- Call (480) 394-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. William D. Grainger is a neurologist in San Tan Valley, Arizona
Dr. Grainger practices at Banner Ironwood Medical Center in Queen Creek, Arizona, part of Banner Health.
Dr. Grainger's NPI, 1003963679, was assigned on January 4, 2007. Dr. Grainger graduated from University of Arizona College of Medicine in 1981. Dr. Grainger holds Arizona license AZ15336.
NPI and contact details
- NPI
- 1003963679NPI Registry (opens in a new tab)
- NPI enumeration date
- January 4, 2007
- NPI status
- Active
- Practice phone
- (480) 394-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William D. Grainger practices at Banner Ironwood Medical Center in Queen Creek, Arizona
Dr. Grainger's primary practice is Banner Ironwood Medical Center, at 37000 North Gantzel Road, Queen Creek, AZ 85140 in Pinal County. The practice phone is (480) 394-4000.
- Banner Ironwood Medical Center37000 North Gantzel Road, Queen Creek, AZ 85140 · Pinal CountyPhone(480) 394-4000
Source: Dmand AI Affiliation Data
Dr. William D. Grainger is affiliated with 3 sites of care and 1 medical group
Dr. Grainger's primary practice is Banner Ironwood Medical Center in Queen Creek, Arizona, part of Banner Health. The medical group on file is Phoenician Neurological Institute. Dmand AI also links Dr. Grainger to 1 more physician office and 1 group practice or clinic, each named with a free account.
Phoenician Neurological Institute1 physician officeName with a free account1 group practice or clinicName with a free account
See all 4 affiliations for Dr. GraingerSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William D. Grainger's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grainger practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Banner Ironwood Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William D. Grainger is one of 395 neurologists in Arizona
Neurology is Dr. Grainger's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Grainger is licensed in Arizona.
Specialties and state licenses
- Neurology, ArizonaPrimary
Neurologists near Dr. Grainger
Counts of neurologists 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 D. Grainger billed Medicare for 556 services in 2022
CMS data shows 556 Medicare services from Dr. Grainger across 3 procedure codes in 2022, all of them office visits. Medicare paid $42,963 for them. Every service was in an office.
Medicare services, 2022556
Paid by Medicare$42,963
Procedure codes3
Dr. Grainger's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 5902022: 5566%
Dr. Grainger compared with the Arizona median for neurologists, 2022
- Dr. Grainger
- Arizona median
- Medicare services
- 556vs 5129% above
- Part D claims
- 806vs 48766% above
Medians across 365 neurologists in Arizona with Dmand AI profiles that report each measure.
Dr. Grainger's most billed Medicare procedure codes, 2022
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 D. Grainger's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Grainger's median patient age at 65, with 71% women.
Dr. Grainger's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women71%
- Men21%
Source: Dmand AI Patient Panel Data
Dr. William D. Grainger wrote 27 Medicare Part D claims in 2024
In 2024, Dr. Grainger wrote 27 Medicare Part D claims. 96% of them were for generic drugs. They cover 31 drugs, with $150,883 in total drug cost. In 2022, CMS named 3,260 claims across 72 drugs.
Part D claims, 202427
Drugs named by CMS31
Total drug cost$150,883
Dr. Grainger's Part D claims by kind of drug, 2024
- Generic26 claims96%
- Brand-name and other1 claims4%
Dr. Grainger's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 3,2602023: 80675%
Drugs named by CMS: 31 in 2023, 72 in 2022.
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
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Dr. William D. Grainger has worked on 1 clinical trial
Dmand AI links Dr. Grainger to 1 clinical trial. Open Payments lists research payments to Dr. Grainger that name 1 trial.
Investigators on the most trials with Dr. Grainger
- Punit Agrawal, DO1 shared trial
- Sarah D. Atkinson, MD1 shared trial
- Ronald Aung-Din, MD1 shared trial
Recent clinical trials with Dr. Grainger
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. William D. Grainger received $563,208 in industry payments from 2016 to 2023
CMS Open Payments shows 1,628 general payments to Dr. Grainger from 65 drug and device companies from 2016 to 2023. Speaker and faculty fees make up the largest share, 75% of the total. Biogen, Inc. paid the most, $360,191. It also lists 1 research payment totaling $16,133 in 2017, naming 1 clinical trial.
General payments to Dr. Grainger by program year, 2016 to 2023
General payments to Dr. Grainger by kind, 2016 to 2023
$563.2Kin total
- Speaker and faculty fees$422,62675%
- Travel and lodging$58,30910%
- Consulting fees$48,9569%
- Food and beverage$32,6916%
- Education$6250%
Companies that paid Dr. Grainger the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William D. Grainger graduated from University of Arizona College of Medicine
Dr. Grainger graduated from University of Arizona College of Medicine in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William D. Grainger'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 Data |
| 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) |
| 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. William D. Grainger
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 D. Grainger's NPI number?
Dr. William D. Grainger's NPI number is 1003963679. It was assigned on January 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. William D. Grainger?
Dr. William D. Grainger is a neurologist in San Tan Valley, Arizona. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. William D. Grainger practice?
Dr. Grainger practices at 37000 North Gantzel Road, Queen Creek, AZ 85140. Dr. Grainger's primary practice is Banner Ironwood Medical Center in Queen Creek, Arizona, part of Banner Health. Dmand AI also links Dr. Grainger to 1 physician office and 1 group practice or clinic.
What is Dr. William D. Grainger's office phone number?
The practice phone on file for Dr. Grainger is (480) 394-4000.
What is Dr. William D. Grainger's medical license number?
Dr. Grainger holds Arizona license AZ15336.
Which hospitals is Dr. William D. Grainger affiliated with?
Dr. Grainger practices at Banner Ironwood Medical Center in Queen Creek, Arizona.
What medical group is Dr. William D. Grainger part of?
Dr. Grainger is linked to Phoenician Neurological Institute.
Does Dr. William D. Grainger accept Medicare?
Yes. CMS data shows Dr. Grainger billed Medicare for 556 services in 2022.
What services does Dr. William D. Grainger bill to Medicare?
In 2022, Dr. Grainger's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99204).
Where did Dr. William D. Grainger go to medical school?
Dr. Grainger graduated from University of Arizona College of Medicine in 1981.
Show 4 more questionsShow fewer questions
What drugs does Dr. William D. Grainger prescribe most?
In 2023 Medicare Part D data, Dr. Grainger's most prescribed drugs by claims were Gabapentin, Sumatriptan Succinate and Donepezil HCl.
Has Dr. William D. Grainger received payments from drug or device companies?
CMS Open Payments shows $563,208 in general payments to Dr. Grainger from 65 companies from 2016 to 2023. The largest total came from Biogen, Inc.
How long has Dr. William D. Grainger been practicing?
Dr. Grainger graduated from medical school in 1981, 45 years ago.
Does Dr. William D. Grainger do research?
Dr. Grainger has worked on 1 clinical trial.
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