Dr. Robert Lee Hook III, MD
- Medicare services, 2024
- 383
- Medicare patients, 2024
- 303
- Part D claims, 2024
- 139
- MIPS score, 2024
- 97
- Hospital affiliations
- 2
- Practice address
- 23845 McBean Pkwy, Valencia, CA 91355
- Practice phone
- Call (661) 253-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hook'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 Lee Hook III is an emergency medicine physician in Valencia, California
Dr. Hook practices at Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital.
Dr. Hook's NPI, 1184659062, was assigned on July 11, 2006. Dr. Hook graduated from UNMC in 1987. Dr. Hook holds California license A45710.
- NPI
- 1184659062NPI Registry (opens in a new tab)
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Practice phone
- (661) 253-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert Lee Hook III practices at Henry Mayo Newhall Hospital in Valencia, California
Dr. Hook's primary practice is Henry Mayo Newhall Hospital, at 23845 McBean Pkwy, Valencia, CA 91355 in Los Angeles County. The practice phone is (661) 253-8000.
- Henry Mayo Newhall Hospital23845 McBean Pkwy, Valencia, CA 91355 · Los Angeles CountyPhone(661) 253-8000
Source: Dmand AI Affiliation Data
Dr. Robert Lee Hook III is affiliated with 2 sites of care and 1 medical group
Dr. Hook's primary practice is Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital. Dr. Hook is also affiliated with UCLA Santa Monica Medical Center. The medical group on file is Vituity.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert Lee Hook III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hook practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Henry Mayo Newhall Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Henry Mayo Newhall Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Robert Lee Hook III is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Hook's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Hook is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Hook's licenses on file in 2 states: California and Colorado.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Colorado license
Emergency medicine physicians near Dr. Hook
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. Robert Lee Hook III billed Medicare for 383 services in 2024
CMS data shows 383 Medicare services from Dr. Hook across 4 procedure codes in 2024, for 303 Medicare patients. Medicare paid $40,901 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hook's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3792024: 30619%
- Tests and treatments
- 2023: 932024: 7717%
Dr. Hook compared with the California median for emergency medicine physicians, 2024
- Dr. Hook
- California median
- Medicare services
- 383vs 26545% above
- Medicare patients
- 303vs 24325% above
- Part D claims
- 61vs 62Close to median
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Hook'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.
Need commercial claims for Dr. Hook?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hook and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Lee Hook III treated 303 Medicare patients in 2024, average age 76
CMS counts 303 Medicare patients who saw Dr. Hook in 2024. The largest group is 75 to 84, with 113 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 40% are also on Medicaid. Their average risk score is 2.35, 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. Hook's median patient age at 52, with 57% women.
Dr. Hook's Medicare patients by age, 2024
Dr. Hook's Medicare patients by sex, 2024
- Women17056%
- Men13344%
Chronic conditions among Dr. Hook's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Diabetes46%
- Ischemic heart disease44%
- Chronic kidney disease40%
- Heart failure40%
- Mood disorders40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hook's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert Lee Hook III wrote 139 Medicare Part D claims in 2024
In 2024, Dr. Hook wrote 139 Medicare Part D claims for 117 patients. 96% of them were for generic drugs. CMS names the drug for 61 of them, across 3 drugs with 11 or more claims each, at $323 in total drug cost. In 2023, CMS named 59 claims across 3 drugs.
Dr. Hook's Part D claims by kind of drug, 2024
- Generic133 claims96%
- Brand-name and other6 claims4%
Dr. Hook'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. Hook's Part D claims, 2024
- Opioids30%42 of 139 claims
- Antibiotics29%41 of 139 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: 592024: 613%
Drugs named by CMS: 3 in 2024, 3 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. Robert Lee Hook III scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Hook for performance year 2024, reported as part of a group.
Dr. Hook's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Robert Lee Hook III received $86 in industry payments from 2020 to 2023
CMS Open Payments shows 4 general payments to Dr. Hook from 4 drug and device companies from 2020 to 2023. Food and beverage make up the largest share, 100% of the total. ViiV Healthcare Company paid the most, $28.
General payments to Dr. Hook by program year, 2020 to 2023
Companies that paid Dr. Hook the most, 2020 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Lee Hook III graduated from UNMC
Dr. Hook graduated from UNMC in 1987.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Robert Lee Hook III accepts plans from 2 insurance carriers
Dr. Hook is in network with 2 carriers, including Elevance and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Elevance
- Molina
Plan types Dr. Hook accepts, by number of carriers
- Medicare2
- EPO1
- HMO1
- Medicaid1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert Lee Hook III'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 | Clinician Public Reporting: Overall MIPS Performance (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 |
| 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. Robert Lee Hook III
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 Lee Hook III's NPI number?
Dr. Robert Lee Hook III's NPI number is 1184659062. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Lee Hook III?
Dr. Robert Lee Hook III is an emergency medicine physician in Valencia, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Robert Lee Hook III practice?
Dr. Hook practices at 23845 McBean Pkwy, Valencia, CA 91355. Dr. Hook's primary practice is Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital.
What is Dr. Robert Lee Hook III's office phone number?
The practice phone on file for Dr. Hook is (661) 253-8000.
What is Dr. Robert Lee Hook III's medical license number?
Dr. Hook holds California license A45710, one of the licenses on file in 2 states.
Which states has Dr. Robert Lee Hook III been licensed in?
Dmand AI has state licenses on file for Dr. Hook in California (1989 to 2026) and Colorado (1990 to 1991).
Which hospitals is Dr. Robert Lee Hook III affiliated with?
Dr. Hook practices at Henry Mayo Newhall Hospital in Valencia, California. Dr. Hook is also affiliated with UCLA Santa Monica Medical Center.
What medical group is Dr. Robert Lee Hook III part of?
Dr. Hook is linked to Vituity.
Does Dr. Robert Lee Hook III accept Medicare?
Yes. CMS data shows Dr. Hook billed Medicare for 383 services in 2024.
What is Dr. Robert Lee Hook III's MIPS score?
Dr. Hook's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Robert Lee Hook III see?
CMS counts 303 Medicare patients who saw Dr. Hook in 2024, with an average age of 76.
Is Dr. Robert Lee Hook III board certified?
Yes. Dr. Hook is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Robert Lee Hook III bill to Medicare?
In 2024, Dr. Hook's most billed Medicare services were emergency department visit (99285), heart test or procedure (93042) and emergency department visit (99284).
Where did Dr. Robert Lee Hook III go to medical school?
Dr. Hook graduated from UNMC in 1987.
What drugs does Dr. Robert Lee Hook III prescribe most?
In 2024 Medicare Part D data, Dr. Hook's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Ciprofloxacin HCl and Ondansetron ODT.
Has Dr. Robert Lee Hook III received payments from drug or device companies?
CMS Open Payments shows $86 in general payments to Dr. Hook from 4 companies from 2020 to 2023. The largest total came from ViiV Healthcare Company.
How long has Dr. Robert Lee Hook III been practicing?
Dr. Hook graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Robert Lee Hook III accept?
Dr. Hook is in network with 2 carriers, including Elevance and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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