Dr. Mai N. Brooks, MD
- Medicare services, 2024
- 1,377
- Medicare patients, 2024
- 744
- Part D claims, 2024
- 534
- Publications
- 7
- MIPS score, 2024
- 39
- Practice address
- 2190 Lynn Rd, Thousand Oaks, CA 91360
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Los Robles Surgicenter - HOPD
Acute Care Hospital outpatient department · Thousand Oaks, California
Find Dr. Brooks' 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. Mai N. Brooks is a surgical oncologist in Thousand Oaks, California
Dr. Brooks practices at Los Robles Surgicenter - HOPD in Thousand Oaks, California.
Dr. Brooks' NPI, 1952315640, was assigned on July 28, 2006. Dr. Brooks graduated from Harvard Medical School in 1988. Dr. Brooks holds California license G81443.
- NPI
- 1952315640NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284795832
- NPI enumeration date
- July 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mai N. Brooks practices at Los Robles Surgicenter - HOPD in Thousand Oaks, California
Dr. Brooks' primary practice is Los Robles Surgicenter - HOPD, at 2190 Lynn Rd, Thousand Oaks, CA 91360.
- Los Robles Surgicenter - HOPD2190 Lynn Rd, Thousand Oaks, CA 91360
Source: Dmand AI Affiliation Data
Dr. Mai N. Brooks is affiliated with 7 sites of care and 1 medical group
Dr. Brooks' primary practice is Los Robles Surgicenter - HOPD in Thousand Oaks, California. Dr. Brooks is also affiliated with Los Robles Regional Medical Center. Dmand AI also links Dr. Brooks to 2 more hospitals, 1 physician office, 1 group practice or clinic, 1 ambulatory surgery center and 1 medical group, each named with a free account. Dr. Brooks' employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mai N. Brooks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brooks practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Robles Surgicenter - HOPD | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mai N. Brooks is one of 243 surgical oncologists in California
Surgical oncology is Dr. Brooks' primary specialty in the NPI Registry, under taxonomy code 2086X0206X. Dr. Brooks is board certified in surgery by the American Board of Surgery. Dr. Brooks is licensed in California.
Specialties and state licenses
- Surgical oncology, CaliforniaPrimary
Clinical focus
Dmand AI lists breast reconstruction, breast surgery, cancerous skin growth removal, gastrointestinal bleeding, groin hernia surgery, hemorrhoids and mastectomy among the conditions Dr. Brooks treats.
Surgical oncologists near Dr. Brooks
Counts of surgical oncologists 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. Mai N. Brooks billed Medicare for 1,377 services in 2024
CMS data shows 1,377 Medicare services from Dr. Brooks across 11 procedure codes in 2024, for 744 Medicare patients. Medicare paid $249,232 for them.
Dr. Brooks' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8792024: 1,08223%
- Surgery
- 2023: 2692024: 29510%
Where Dr. Brooks' Medicare services took place, 2024
- In an office1,09780%
- In a facility28020%
Dr. Brooks compared with the California median for surgical oncologists, 2024
- Dr. Brooks
- California median
- Medicare services
- 1,377vs 1728.0 times
- Medicare patients
- 744vs 1116.7 times
- Part D claims
- 483vs 2222.0 times
Medians across 217 surgical oncologists in California with Dmand AI profiles that report each measure.
Dr. Brooks' 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. Brooks and other surgical oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mai N. Brooks treated 744 Medicare patients in 2024, average age 75
CMS counts 744 Medicare patients who saw Dr. Brooks in 2024. The largest group is 65 to 74, with 375 patients. 75% of them have high cholesterol, and 65% have high blood pressure. 4% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Brooks' median patient age at 65, with 94% women.
Dr. Brooks' Medicare patients by age, 2024
Dr. Brooks' Medicare patients by sex, 2024
- Women70595%
- Men395%
Chronic conditions among Dr. Brooks' Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Cancer61%
- Arthritis54%
- Osteoporosis36%
- Anxiety22%
- Ischemic heart disease22%
- Mood disorders22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Brooks' 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
- Women94%
- Men5%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mai N. Brooks wrote 534 Medicare Part D claims in 2024
In 2024, Dr. Brooks wrote 534 Medicare Part D claims for 176 patients. 99% of them were for generic drugs. CMS names the drug for 483 of them, across 8 drugs with 11 or more claims each, at $2,179 in total drug cost. In 2023, CMS named 382 claims across 9 drugs.
Dr. Brooks' Part D claims by kind of drug, 2024
- Generic528 claims99%
- Brand-name and other6 claims1%
Dr. Brooks' 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. Brooks' Part D claims, 2024
- Opioids33%176 of 534 claims
- Antibiotics31%168 of 534 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: 3822024: 48326%
Drugs named by CMS: 8 in 2024, 9 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. Mai N. Brooks scored 39 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 39 out of 100 for Dr. Brooks for performance year 2024, reported individually. Dr. Brooks accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 138 procedures of mastectomy by Dr. Brooks, more than 99% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Brooks' MIPS scores, performance year 2024
- 39of 100Final score
- 43.3of 100Quality
- 0of 100Improvement Activities
- 71of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Brooks ranks in Medicare procedure volume
- Mastectomy
- 99th percentile138 procedures
- Melanoma (skin cancer) excision
- 95th percentile138 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mai N. Brooks has 7 publications on record
Dmand AI links 7 papers to Dr. Brooks, published from 2005 to 2007. The most frequent topics are Breast Neoplasms, Cell Line, Tumor and Mediator Complex. Dr. Brooks' most frequent co-author is David T. Wong, MD.
Topics Dr. Brooks writes about most
- Breast Neoplasms
- Cell Line, Tumor
- Mediator Complex
- Proteins
Dr. Brooks' most frequent co-authors
Recent publications by Dr. Brooks
Cancer Epidemiol Biomarkers Prev
See who Dr. Brooks researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Brooks works with, so you can find a warm path to the right surgical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mai N. Brooks received $276 in industry payments from 2017 to 2025
CMS Open Payments shows 8 general payments to Dr. Brooks from 6 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Merit Medical Systems Inc paid the most, $108.
General payments to Dr. Brooks by program year, 2017 to 2025
Companies that paid Dr. Brooks 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. Mai N. Brooks has 6 awards and honors on record
Dmand AI lists 6 awards for Dr. Brooks, most recently Award of Excellence in 2014.
Awards and honors for Dr. Brooks
- 2014
- Award of Excellence
- 2013
- CMS Stage 1 EHR
- Top Doctors:LA Area
- 2012
- Top Doctors:Southern California
- 2011
- Super Doc
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Mai N. Brooks graduated from Harvard Medical School
Dr. Brooks graduated from Harvard Medical School in 1988. Dr. Brooks is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Mai N. Brooks accepts plans from 16 insurance carriers
Dr. Brooks is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Humana
- Regence Health Plans
- +8 more carriersWith a free account
Plan types Dr. Brooks accepts, by number of carriers
- Medicare10
- PPO10
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Mai N. Brooks'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 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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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) |
| 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. Mai N. Brooks
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. Mai N. Brooks' NPI number?
Dr. Mai N. Brooks' NPI number is 1952315640. It was assigned on July 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mai N. Brooks?
Dr. Mai N. Brooks is a surgical oncologist in Thousand Oaks, California. The primary specialty in the NPI Registry is Surgical Oncology Physician (taxonomy code 2086X0206X).
Where does Dr. Mai N. Brooks practice?
Dr. Brooks practices at 2190 Lynn Rd, Thousand Oaks, CA 91360. Dr. Brooks' primary practice is Los Robles Surgicenter - HOPD in Thousand Oaks, California. Dmand AI also links Dr. Brooks to 2 hospitals, 1 physician office, 1 group practice or clinic, 1 ambulatory surgery center and 1 medical group.
What is Dr. Mai N. Brooks' medical license number?
Dr. Brooks holds California license G81443.
Which hospitals is Dr. Mai N. Brooks affiliated with?
Dr. Brooks is affiliated with Los Robles Regional Medical Center. Dmand AI links Dr. Brooks to 2 more hospitals.
Does Dr. Mai N. Brooks accept Medicare?
Yes. CMS data shows Dr. Brooks billed Medicare for 1,377 services in 2024, and Dr. Brooks accepts Medicare assignment.
What is Dr. Mai N. Brooks' MIPS score?
Dr. Brooks' MIPS final score for performance year 2024 is 39 out of 100, reported individually.
How many Medicare patients does Dr. Mai N. Brooks see?
CMS counts 744 Medicare patients who saw Dr. Brooks in 2024, with an average age of 75.
Is Dr. Mai N. Brooks board certified?
Yes. Dr. Brooks is board certified in surgery by the American Board of Surgery.
What services does Dr. Mai N. Brooks bill to Medicare?
In 2024, Dr. Brooks' 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. Mai N. Brooks go to medical school?
Dr. Brooks graduated from Harvard Medical School in 1988.
What drugs does Dr. Mai N. Brooks prescribe most?
In 2024 Medicare Part D data, Dr. Brooks' most prescribed drugs by claims were Hydrocodone-Acetaminophen, Ondansetron ODT and Cephalexin.
Has Dr. Mai N. Brooks received payments from drug or device companies?
CMS Open Payments shows $276 in general payments to Dr. Brooks from 6 companies from 2017 to 2025. The largest total came from Merit Medical Systems Inc.
How long has Dr. Mai N. Brooks been practicing?
Dr. Brooks graduated from medical school in 1988, 38 years ago.
Does Dr. Mai N. Brooks do research?
Dmand AI links 7 publications to Dr. Brooks, published from 2005 to 2007.
Who does Dr. Mai N. Brooks publish with?
Dr. Brooks' most frequent co-authors are David T. Wong, MD (1 shared paper).
What insurance does Dr. Mai N. Brooks accept?
Dr. Brooks is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
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