Rheumatol Int
ConstipationDiarrheaDisease Progression
Dr. W Leroy Griffing, MD
NPI1437133972
- Medicare services, 2023
- 183
- Part D claims, 2024
- 34
- Publications
- 10
- Industry payments
- $2,570
- Affiliated sites
- 1
- Practice address
- 5777 E Mayo Blvd, Phoenix, AZ 85054
- Practice phone
- Call (480) 342-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mayo Clinic Hospital - Phoenix
Phoenix, Arizona
Find Dr. Griffing's professional email, personal email and mobile number
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Dr. W Leroy Griffing is a rheumatologist in Phoenix, Arizona
Dr. Griffing practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona.
Dr. Griffing's NPI, 1437133972, was assigned on November 29, 2005. Dr. Griffing graduated from Creighton University School of Medicine - Omaha in 1974. Dr. Griffing's Arizona license number on file is 17892.
NPI and contact details
- NPI
- 1437133972NPI Registry (opens in a new tab)
- NPI enumeration date
- November 29, 2005
- NPI status
- Active
- Practice phone
- (480) 342-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 78
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. W Leroy Griffing practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona
Dr. Griffing's primary practice is Mayo Clinic Hospital - Phoenix, at 5777 E Mayo Blvd, Phoenix, AZ 85054 in Maricopa County. The practice phone is (480) 342-2000.
- Mayo Clinic Hospital - Phoenix5777 E Mayo Blvd, Phoenix, AZ 85054 · Maricopa CountyPhone(480) 342-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. W Leroy Griffing is affiliated with 2 sites of care and 1 medical group
Dr. Griffing's primary practice is Mayo Clinic Hospital - Phoenix in Phoenix, Arizona. The medical group on file is Mayo Clinic Arizona. Dmand AI also links Dr. Griffing to 1 more ambulatory surgery center, named with a free account.
Mayo Clinic Hospital - PhoenixPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. W Leroy Griffing's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Griffing practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital - Phoenix | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. W Leroy Griffing is one of 98 rheumatologists in Arizona
Rheumatology is Dr. Griffing's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Griffing is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Griffing's licenses on file in 3 states: Arizona, Minnesota and Iowa.
Specialties and state licenses
- Rheumatology, ArizonaPrimary
- Minnesota license
- Iowa license
Clinical focus
Dmand AI lists arteritis, arthritis, fluid in a joint, lupus, muscle disease and rheumatoid arthritis among the conditions Dr. Griffing treats.
Rheumatologists near Dr. Griffing
Counts of rheumatologists 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. W Leroy Griffing billed Medicare for 183 services in 2023
CMS data shows 183 Medicare services from Dr. Griffing across 4 procedure codes in 2023, all of them office visits. Medicare paid $22,197 for them. Every service was in an office.
Medicare services, 2023183
Paid by Medicare$22,197
Procedure codes4
Dr. Griffing's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 2752023: 18333%
Dr. Griffing compared with the Arizona median for rheumatologists, 2023
- Dr. Griffing
- Arizona median
- Medicare services
- 183vs 5,24897% below
- Part D claims
- 151vs 1,20187% below
Medians across 98 rheumatologists in Arizona with Dmand AI profiles that report each measure.
Dr. Griffing's most billed Medicare procedure codes, 2023
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. Griffing and other rheumatologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. W Leroy Griffing's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Griffing's median patient age at 65, with 68% women.
Dr. Griffing'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
- Women68%
- Men32%
Source: Dmand AI Patient Panel Data
Dr. W Leroy Griffing wrote 34 Medicare Part D claims in 2024
In 2024, Dr. Griffing wrote 34 Medicare Part D claims for 19 patients. 91% of them were for generic drugs. They cover 7 drugs, with $8,431 in total drug cost. In 2022, CMS named 109 claims across 5 drugs.
Part D claims, 202434
Drugs named by CMS7
Total drug cost$8,431
Part D patients19
Dr. Griffing's Part D claims by kind of drug, 2024
- Generic31 claims91%
- Brand-name and other3 claims9%
Dr. Griffing'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: 1092023: 15139%
Drugs named by CMS: 7 in 2023, 5 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. W Leroy Griffing has 10 publications on record
Dmand AI links 10 papers to Dr. Griffing, published from 2014 to 2021. 2016 was the busiest year, with 2. The most frequent topics are Scleroderma, Systemic, Esophageal Motility Disorders and Gastroesophageal Reflux. Dr. Griffing's most frequent co-authors are Sarah B. Umar, MD, David J. Dicaudo, MD and James M. Parish, MD.
Papers10
Years published2014 to 2021
Dr. Griffing's papers by year, 2014 to 2021
Topics Dr. Griffing writes about most
- Scleroderma, Systemic
- Esophageal Motility Disorders
- Gastroesophageal Reflux
- Myositis
Dr. Griffing's most frequent co-authors
- Sarah B. Umar, MD4 shared papers
- David J. Dicaudo, MD2 shared papers
- James M. Parish, MD2 shared papers
Recent publications by Dr. Griffing
Clin Gastroenterol Hepatol
Esophageal Motility DisordersEsophagusManometry
AdenocarcinomaAntineoplastic Agents, PhytogenicAntineoplastic Combined Chemotherapy Protocols
See who Dr. Griffing researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Griffing works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. W Leroy Griffing received $2,570 in industry payments from 2016 to 2019
CMS Open Payments shows 18 general payments to Dr. Griffing from 6 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 61% of the total. CSL Behring paid the most, $1,865.
General payments to Dr. Griffing by program year, 2016 to 2019
General payments to Dr. Griffing by kind, 2016 to 2019
$2.6Kin total
- Food and beverage$1,55961%
- Travel and lodging$1,01139%
Companies that paid Dr. Griffing the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. W Leroy Griffing has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Griffing, most recently Top Doctors:Arizona State in 2020.
Awards and honors for Dr. Griffing
- 2020
- Top Doctors:Arizona State
- Undated
- ACR Fellow
Source: Dmand AI Professional Profile Data
Dr. W Leroy Griffing graduated from Creighton University School of Medicine - Omaha
Dr. Griffing graduated from Creighton University School of Medicine - Omaha in 1974. Dr. Griffing is a member of ACR.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. W Leroy Griffing accepts plans from 1 insurance carrier
Dr. Griffing is in network with 1 carrier, including Excellus BlueCross BlueShield. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
Plan types Dr. Griffing accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. W Leroy Griffing'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. W Leroy Griffing
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. W Leroy Griffing's NPI number?
Dr. W Leroy Griffing's NPI number is 1437133972. It was assigned on November 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. W Leroy Griffing?
Dr. W Leroy Griffing is a rheumatologist in Phoenix, Arizona. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. W Leroy Griffing practice?
Dr. Griffing practices at 5777 E Mayo Blvd, Phoenix, AZ 85054. Dr. Griffing's primary practice is Mayo Clinic Hospital - Phoenix in Phoenix, Arizona. Dmand AI also links Dr. Griffing to 1 ambulatory surgery center.
What is Dr. W Leroy Griffing's office phone number?
The practice phone on file for Dr. Griffing is (480) 342-2000.
What is Dr. W Leroy Griffing's medical license number?
Dr. Griffing's Arizona license number on file is 17892, one of the licenses on file in 3 states.
Which states has Dr. W Leroy Griffing been licensed in?
Dmand AI has state licenses on file for Dr. Griffing in Arizona (1988 to 2025), Minnesota (1977 to 2024) and Iowa (1978 to 2019).
What medical group is Dr. W Leroy Griffing part of?
Dr. Griffing is linked to Mayo Clinic Arizona.
Does Dr. W Leroy Griffing accept Medicare?
Yes. CMS data shows Dr. Griffing billed Medicare for 183 services in 2023.
Is Dr. W Leroy Griffing board certified?
Yes. Dr. Griffing is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. W Leroy Griffing bill to Medicare?
In 2023, Dr. Griffing's most billed Medicare services were office visit, established patient (99215), office visit, established patient (99214) and office visit, new patient (99205).
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Where did Dr. W Leroy Griffing go to medical school?
Dr. Griffing graduated from Creighton University School of Medicine - Omaha in 1974.
What drugs does Dr. W Leroy Griffing prescribe most?
In 2023 Medicare Part D data, Dr. Griffing's most prescribed drugs by claims were Methotrexate, Mycophenolate Mofetil and Prednisone.
Has Dr. W Leroy Griffing received payments from drug or device companies?
CMS Open Payments shows $2,570 in general payments to Dr. Griffing from 6 companies from 2016 to 2019. The largest total came from CSL Behring.
How long has Dr. W Leroy Griffing been practicing?
Dr. Griffing graduated from medical school in 1974, 52 years ago.
Does Dr. W Leroy Griffing do research?
Dmand AI links 10 publications to Dr. Griffing, published from 2014 to 2021.
Who does Dr. W Leroy Griffing publish with?
Dr. Griffing's most frequent co-authors are Sarah B. Umar, MD (4 shared papers), David J. Dicaudo, MD (2 shared papers) and James M. Parish, MD (2 shared papers).
What insurance does Dr. W Leroy Griffing accept?
Dr. Griffing is in network with 1 carrier, including Excellus BlueCross BlueShield. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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