Dr. Robert John Holloway, MD
- Medicare services, 2024
- 71
- Medicare patients, 2024
- 44
- Part D claims, 2024
- 50
- Hospital affiliations
- 1
- Industry payments
- $66
- Practice address
- 6200 N La Cholla Blvd, Tucson, AZ 85741
- Practice phone
- Call (520) 742-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwest Medical Center
Tucson, Arizona
Find Dr. Holloway'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. Robert John Holloway is a hospitalist in Tucson, Arizona
Dr. Holloway practices at Northwest Medical Center in Tucson, Arizona.
Dr. Holloway's NPI, 1376630293, was assigned on October 10, 2006. Dr. Holloway holds Georgia license 031263.
- NPI
- 1376630293NPI Registry (opens in a new tab)
- NPI enumeration date
- October 10, 2006
- NPI status
- Active
- Practice phone
- (520) 742-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Robert John Holloway practices at Northwest Medical Center in Tucson, Arizona
Dr. Holloway's primary practice is Northwest Medical Center, at 6200 N La Cholla Blvd, Tucson, AZ 85741 in Pima County. The practice phone is (520) 742-9000.
- Northwest Medical Center6200 N La Cholla Blvd, Tucson, AZ 85741 · Pima CountyPhone(520) 742-9000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert John Holloway is affiliated with 2 sites of care and 3 medical groups
Dr. Holloway's primary practice is Northwest Medical Center in Tucson, Arizona. Dr. Holloway is also affiliated with Alaska Regional Hospital. The medical group on file is Northwest Medical Center. Dmand AI also links Dr. Holloway to 2 more medical groups, each named with a free account.
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. Robert John Holloway's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holloway practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwest Medical Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert John Holloway is one of 720 hospitalists in Arizona
Hospitalist is Dr. Holloway's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dmand AI has Dr. Holloway's licenses on file in 2 states: Georgia and New York.
Specialties and state licenses
- Hospitalist, GeorgiaPrimary
- New York license
Hospitalists near Dr. Holloway
Counts of hospitalists 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. Robert John Holloway billed Medicare for 71 services in 2024
CMS data shows 71 Medicare services from Dr. Holloway across 3 procedure codes in 2024, for 44 Medicare patients. Medicare paid $5,639 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Holloway's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 932024: 7124%
Dr. Holloway compared with the Arizona median for hospitalists, 2024
- Dr. Holloway
- Arizona median
- Medicare services
- 71vs 51286% below
- Medicare patients
- 44vs 24582% below
- Part D claims
- 22vs 9477% below
Medians across 617 hospitalists in Arizona 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 hospitalists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert John Holloway treated 44 Medicare patients in 2024, average age 77
CMS counts 44 Medicare patients who saw Dr. Holloway in 2024. The largest group is 75 to 84, with 15 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
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
- Women2557%
- Men1943%
Chronic conditions among Dr. Holloway's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Chronic kidney disease57%
- Diabetes55%
- Heart failure52%
- Anxiety45%
- Depression45%
Share of Medicare patients with each condition. A patient can have several.
Source: Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert John Holloway wrote 50 Medicare Part D claims in 2024
In 2024, Dr. Holloway wrote 50 Medicare Part D claims for 17 patients. 84% of them were for generic drugs. CMS names the drug for 22 of them, across 2 drugs with 11 or more claims each, at $275 in total drug cost. In 2018, CMS named 13 claims across 1 drug.
Dr. Holloway's Part D claims by kind of drug, 2024
- Generic42 claims84%
- Brand-name and other8 claims16%
Dr. Holloway's most prescribed drugs by claims, 2020
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, 2018 to 2020
- 2018
- 2020
- Claims for drugs CMS names
- 2018: 132020: 2269%
Drugs named by CMS: 2 in 2020, 1 in 2018.
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. Robert John Holloway received $66 in industry payments from 2019 to 2023
CMS Open Payments shows 3 general payments to Dr. Holloway from 3 drug and device companies from 2019 to 2023. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $28.
General payments to Dr. Holloway by program year, 2019 to 2023
Companies that paid Dr. Holloway the most, 2019 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Robert John Holloway'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 | Medicare 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Robert John Holloway
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. Robert John Holloway's NPI number?
Dr. Robert John Holloway's NPI number is 1376630293. It was assigned on October 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert John Holloway?
Dr. Robert John Holloway is a hospitalist in Tucson, Arizona. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Robert John Holloway practice?
Dr. Holloway practices at 6200 N La Cholla Blvd, Tucson, AZ 85741. Dr. Holloway's primary practice is Northwest Medical Center in Tucson, Arizona. Dmand AI also links Dr. Holloway to 2 medical groups.
What is Dr. Robert John Holloway's office phone number?
The practice phone on file for Dr. Holloway is (520) 742-9000.
What is Dr. Robert John Holloway's medical license number?
Dr. Holloway holds Georgia license 031263, one of the licenses on file in 2 states.
Which states has Dr. Robert John Holloway been licensed in?
Dmand AI has state licenses on file for Dr. Holloway in Georgia and New York.
Which hospitals is Dr. Robert John Holloway affiliated with?
Dr. Holloway is affiliated with Alaska Regional Hospital.
What medical group is Dr. Robert John Holloway part of?
Dr. Holloway is linked to Northwest Medical Center. Dmand AI links Dr. Holloway to 2 more medical groups.
Does Dr. Robert John Holloway accept Medicare?
Yes. CMS data shows Dr. Holloway billed Medicare for 71 services in 2024.
How many Medicare patients does Dr. Robert John Holloway see?
CMS counts 44 Medicare patients who saw Dr. Holloway in 2024, with an average age of 77.
Show 4 more questionsShow fewer questions
What services does Dr. Robert John Holloway bill to Medicare?
In 2024, Dr. Holloway's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
What drugs does Dr. Robert John Holloway prescribe most?
In 2020 Medicare Part D data, Dr. Holloway's most prescribed drugs by claims were Cefdinir and Levofloxacin.
Has Dr. Robert John Holloway received payments from drug or device companies?
CMS Open Payments shows $66 in general payments to Dr. Holloway from 3 companies from 2019 to 2023. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Robert John Holloway been practicing?
Dr. Holloway's NPI was assigned in 2006.
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