Dr. Robert Ryan McMillan, MD
- Medicare services, 2021
- 147
- Part D claims, 2024
- 126
- Publications
- 11
- Hospital affiliations
- 1
- Industry payments
- $4,688
- Practice address
- 5601 De Soto Avenue, Woodland Hills, CA 91367
- Practice phone
- Call (818) 719-3800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. McMillan'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 Ryan McMillan is a general surgeon in Woodland Hills, California
Dr. McMillan practices at Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California, part of Kaiser Permanente.
Dr. McMillan's NPI, 1407171820, was assigned on March 29, 2010. Dr. McMillan graduated from Baylor College Of Medicine in 2009. Dr. McMillan holds California license A147899.
- NPI
- 1407171820NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749551844
- NPI enumeration date
- March 29, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 719-3800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Ryan McMillan practices at Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California
Dr. McMillan's primary practice is Kaiser Permanente Woodland Hills Medical Center, at 5601 De Soto Avenue, Woodland Hills, CA 91367 in Los Angeles County. The practice phone is (818) 719-3800.
- Kaiser Permanente Woodland Hills Medical Center5601 De Soto Avenue, Woodland Hills, CA 91367 · Los Angeles CountyPhone(818) 719-3800
Source: Dmand AI Affiliation Data
Dr. Robert Ryan McMillan is affiliated with 3 sites of care and 1 medical group
Dr. McMillan's primary practice is Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. McMillan to 1 more dialysis center and 1 group practice or clinic, 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. Robert Ryan McMillan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McMillan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Woodland Hills 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. Robert Ryan McMillan is one of 2,926 general surgeons in California
Surgery is Dr. McMillan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. McMillan is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. McMillan's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- Texas license
General surgeons near Dr. McMillan
Counts of general surgeons 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 Ryan McMillan billed Medicare for 147 services in 2021
CMS data shows 147 Medicare services from Dr. McMillan across 8 procedure codes in 2021. Medicare paid $59,124 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. McMillan's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 532021: 8662%
- Surgery
- 2020: 762021: 6120%
Dr. McMillan compared with the California median for general surgeons, 2021
- Dr. McMillan
- California median
- Medicare services
- 147vs 16611% below
- Part D claims
- 72vs 342.1 times
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. McMillan's most billed Medicare procedure codes, 2021
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. McMillan and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Ryan McMillan's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. McMillan's median patient age at 60, with 66% women.
Dr. McMillan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women66%
- Men34%
Source: Dmand AI Patient Panel Data
Dr. Robert Ryan McMillan wrote 126 Medicare Part D claims in 2024
In 2024, Dr. McMillan wrote 126 Medicare Part D claims for 87 patients. 98% of them were for generic drugs. CMS names the drug for 72 of them, across 3 drugs with 11 or more claims each, at $567 in total drug cost. In 2023, CMS named 62 claims across 3 drugs.
Dr. McMillan's Part D claims by kind of drug, 2024
- Generic123 claims98%
- Brand-name and other3 claims2%
Dr. McMillan'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. McMillan's Part D claims, 2024
- Opioids59%74 of 126 claims
- Antibiotics24%30 of 126 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: 622024: 7216%
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
How Dr. Robert Ryan McMillan takes part in Medicare
Dr. McMillan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Robert Ryan McMillan has 11 publications on record
Dmand AI links 11 papers to Dr. McMillan, published from 2012 to 2022. 2013 was the busiest year, with 3. Dr. McMillan's most frequent co-authors are Maen Abdelrahim, MD, Ashish Saharia, MD and Ala Abudayyeh, MD.
Dr. McMillan's papers by year, 2012 to 2022
Dr. McMillan's most frequent co-authors
Recent publications by Dr. McMillan
See who Dr. McMillan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. McMillan works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert Ryan McMillan received $4,688 in industry payments from 2017 to 2025
CMS Open Payments shows 32 general payments to Dr. McMillan from 13 drug and device companies from 2017 to 2025. Education make up the largest share, 53% of the total. Intuitive Surgical, Inc. paid the most, $3,575.
General payments to Dr. McMillan by program year, 2017 to 2025
General payments to Dr. McMillan by kind, 2017 to 2025
- Education$2,50053%
- Travel and lodging$1,34729%
- Food and beverage$84118%
Companies that paid Dr. McMillan 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. Robert Ryan McMillan graduated from Baylor College Of Medicine
Dr. McMillan graduated from Baylor College Of Medicine in 2009.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Robert Ryan McMillan accepts plans from 3 insurance carriers
Dr. McMillan is in network with 3 carriers, including Cigna, Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Cigna
- Kaiser Permanente
- CMS Medicare
Plan types Dr. McMillan accepts, by number of carriers
- HMO2
- Medicare2
- EPO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert Ryan McMillan'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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) |
| 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 Ryan McMillan
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 Ryan McMillan's NPI number?
Dr. Robert Ryan McMillan's NPI number is 1407171820. It was assigned on March 29, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Ryan McMillan?
Dr. Robert Ryan McMillan is a general surgeon in Woodland Hills, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Robert Ryan McMillan practice?
Dr. McMillan practices at 5601 De Soto Avenue, Woodland Hills, CA 91367. Dr. McMillan's primary practice is Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California, part of Kaiser Permanente. Dmand AI also links Dr. McMillan to 1 dialysis center and 1 group practice or clinic.
What is Dr. Robert Ryan McMillan's office phone number?
The practice phone on file for Dr. McMillan is (818) 719-3800.
What is Dr. Robert Ryan McMillan's medical license number?
Dr. McMillan holds California license A147899, one of the licenses on file in 2 states.
Which states has Dr. Robert Ryan McMillan been licensed in?
Dmand AI has state licenses on file for Dr. McMillan in California (2017 to 2027) and Texas (2019 to 2022).
Which hospitals is Dr. Robert Ryan McMillan affiliated with?
Dr. McMillan practices at Kaiser Permanente Woodland Hills Medical Center in Woodland Hills, California.
What medical group is Dr. Robert Ryan McMillan part of?
Dr. McMillan is linked to Southern California Permanente Medical Group.
Does Dr. Robert Ryan McMillan accept Medicare?
Yes. CMS data shows Dr. McMillan billed Medicare for 147 services in 2021, and Dr. McMillan accepts Medicare assignment.
Is Dr. Robert Ryan McMillan board certified?
Yes. Dr. McMillan is board certified in surgery by the American Board of Surgery.
Show 8 more questionsShow fewer questions
What services does Dr. Robert Ryan McMillan bill to Medicare?
In 2021, Dr. McMillan's most billed Medicare services were hospital inpatient care (99231), surgery: urinary system (50360) and surgery: urinary system (50323).
Where did Dr. Robert Ryan McMillan go to medical school?
Dr. McMillan graduated from Baylor College Of Medicine in 2009.
What drugs does Dr. Robert Ryan McMillan prescribe most?
In 2024 Medicare Part D data, Dr. McMillan's most prescribed drugs by claims were Tramadol HCl, Hydrocodone-Acetaminophen and Amoxicillin-Clavulanate Potass.
Has Dr. Robert Ryan McMillan received payments from drug or device companies?
CMS Open Payments shows $4,688 in general payments to Dr. McMillan from 13 companies from 2017 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Robert Ryan McMillan been practicing?
Dr. McMillan graduated from medical school in 2009, 17 years ago.
Does Dr. Robert Ryan McMillan do research?
Dmand AI links 11 publications to Dr. McMillan, published from 2012 to 2022.
Who does Dr. Robert Ryan McMillan publish with?
Dr. McMillan's most frequent co-authors are Maen Abdelrahim, MD (4 shared papers), Ashish Saharia, MD (4 shared papers) and Ala Abudayyeh, MD (2 shared papers).
What insurance does Dr. Robert Ryan McMillan accept?
Dr. McMillan is in network with 3 carriers, including Cigna, Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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