Dr. Daniel Stuart Brereton, DO

  • La Jolla, CA
  • Orthopedic surgeon
NPI1487093951PAC ID8628325479
Medicare services, 2024
788
Medicare patients, 2024
179
Part D claims, 2024
338
Publications
2
MIPS score, 2024
100
Practice address
9834 Genesee Ave, La Jolla, CA 92037
Practice phone
Call (858) 453-3133
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

EGL Ambulatory Surgery Center

Surgery Center - Not Medicare-Certified · La Jolla, California

See all 12 affiliations

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Dr. Daniel Stuart Brereton is an orthopedic surgeon in La Jolla, California

Dr. Brereton practices at EGL Ambulatory Surgery Center in La Jolla, California.

Dr. Brereton's NPI, 1487093951, was assigned on June 18, 2013. Dr. Brereton graduated from Arizona College of Osteopathic Medicine - Glendale in 2013. Dr. Brereton's California license number on file is 20A13592.

NPI and contact details
Medicare PAC ID
8628325479
NPI enumeration date
June 18, 2013
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(858) 453-3133
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
39
Medical school graduation
2013

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Daniel Stuart Brereton practices at EGL Ambulatory Surgery Center in La Jolla, California

Dr. Brereton's primary practice is EGL Ambulatory Surgery Center, at 9834 Genesee Ave, La Jolla, CA 92037. The practice phone is (858) 453-3133.

  • EGL Ambulatory Surgery Center
    9834 Genesee Ave, La Jolla, CA 92037Phone(858) 453-3133

Source: Dmand AI Affiliation Data

Dr. Daniel Stuart Brereton is affiliated with 9 sites of care and 3 medical groups

Dr. Brereton's primary practice is EGL Ambulatory Surgery Center in La Jolla, California. Dr. Brereton is also affiliated with Scripps Memorial Hospital Encinitas. The medical group on file is Emergency and Acute Care Medical Corporation. Dmand AI also links Dr. Brereton to 3 more hospitals, 3 group practices and clinics, 2 medical groups and 1 home health agency, each named with a free account.

See all 12 affiliations for Dr. Brereton

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Daniel Stuart Brereton's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brereton practices, 9 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
EGL Ambulatory Surgery CenterAvailable with a free account
+8 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Daniel Stuart Brereton is one of 2,056 orthopedic surgeons in California

Orthopaedic surgery is Dr. Brereton's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Brereton is board certified in orthopedic surgery by the AOA Board of Orthopedic Surgery. Dmand AI has Dr. Brereton's licenses on file in 2 states: California and Texas.

Specialties and state licenses

  • Orthopaedic surgery, CaliforniaPrimaryLicense 20A13592 · 2014 to 2025 · taxonomy 207X00000X
  • Texas licenseLicense R7395 · 2018 to 2027

Clinical focus

Dmand AI lists arm, wrist, hand fracture and dislocation, arthritis, carpal tunnel syndrome, hip replacement, joint arthropathy, joint pain, knee arthroscopy and knee injury among the conditions Dr. Brereton treats.

Orthopedic surgeons near Dr. Brereton

Counts of orthopedic 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. Daniel Stuart Brereton billed Medicare for 788 services in 2024

CMS data shows 788 Medicare services from Dr. Brereton across 14 procedure codes in 2024, for 179 Medicare patients. Medicare paid $62,984 for them.

Medicare services, 2024788
Medicare patients179
Paid by Medicare$62,984
Procedure codes14

Dr. Brereton's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2892024: 2983%
Drugs given in the office
2023: 2712024: 2508%
Imaging
2023: 1162024: 14828%
Surgery
2023: 552024: 9267%

Where Dr. Brereton's Medicare services took place, 2024

  • In an office69488%
  • In a facility9412%

Dr. Brereton compared with the California median for orthopedic surgeons, 2024

  • Dr. Brereton
  • California median
Medicare services
788vs 68315% above
Medicare patients
179vs 21517% below
Part D claims
285vs 704.1 times

Medians across 1,844 orthopedic surgeons in California with Dmand AI profiles that report each measure.

Dr. Brereton'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.

See all procedures by Dr. Brereton

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Daniel Stuart Brereton treated 179 Medicare patients in 2024, average age 73

CMS counts 179 Medicare patients who saw Dr. Brereton in 2024. The largest group is 65 to 74, with 89 patients. 75% of them have arthritis, and 74% have high blood pressure. 37% are also on Medicaid. Their average risk score is 1.46, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Brereton's median patient age at 62, with 52% women.

Medicare patients, 2024179
Average age73
Average risk score1.46
Also on Medicaid37%

Dr. Brereton's Medicare patients by age, 2024

Dr. Brereton's Medicare patients by sex, 2024

  • Women10257%
  • Men7743%

Chronic conditions among Dr. Brereton's Medicare patients, 2024

  1. Arthritis75%
  2. High blood pressure74%
  3. High cholesterol74%
  4. Mood disorders36%
  5. Depression34%
  6. Diabetes32%
  7. Anxiety26%
  8. Ischemic heart disease26%

Share of Medicare patients with each condition. A patient can have several.

Dr. Brereton's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 62

Patient panel by sex, all payers

  • Women52%
  • Men47%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Daniel Stuart Brereton wrote 338 Medicare Part D claims in 2024

In 2024, Dr. Brereton wrote 338 Medicare Part D claims for 107 patients. 100% of them were for generic drugs. CMS names the drug for 285 of them, across 7 drugs with 11 or more claims each, at $3,189 in total drug cost. In 2023, CMS named 267 claims across 9 drugs.

Part D claims, 2024338
Drugs named by CMS7
Total drug cost$3,189
Part D patients107

Dr. Brereton's Part D claims by kind of drug, 2024

  • Generic337 claims100%
  • Brand-name and other1 claims0%

Dr. Brereton'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. Brereton's Part D claims, 2024

  • Opioids42%141 of 338 claims
  • Antibiotics11%37 of 338 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: 2672024: 2857%

Drugs named by CMS: 7 in 2024, 9 in 2023.

See all prescribing by Dr. Brereton

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. Daniel Stuart Brereton scored 100 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Brereton for performance year 2024, reported as part of a group. Dr. Brereton accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Brereton as offering telehealth. CMS counts 19 procedures of upper limb (arm) arthroscopy (minimally invasive joint repair) by Dr. Brereton, more than 61% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Brereton's MIPS scores, performance year 2024

  • 100of 100Final score
  • 99of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Brereton ranks in Medicare procedure volume

Upper limb (arm) arthroscopy (minimally invasive joint repair)
61st percentile19 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Knee replacement: 1 to 10 procedures (CMS shows small counts as a range)

Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

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. Daniel Stuart Brereton has 2 publications on record

Dmand AI links 2 papers to Dr. Brereton in 2019. The most frequent topics are Radiography. Dr. Brereton's most frequent co-authors are Todd C. Moen, MD, Jerrick Gene Robker, DO and John Anthony Schlechter, DO.

Papers2

Topics Dr. Brereton writes about most

  • Radiography

Dr. Brereton's most frequent co-authors

Recent publications by Dr. Brereton

See all 2 publications and co-authors

See who Dr. Brereton researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Brereton works with, so you can find a warm path to the right orthopedic surgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Daniel Stuart Brereton received $49,237 in industry payments from 2016 to 2025

CMS Open Payments shows 182 general payments to Dr. Brereton from 33 drug and device companies from 2016 to 2025. Education make up the largest share, 23% of the total. Encore Medical, LP paid the most, $16,540.

General payments to Dr. Brereton by program year, 2016 to 2025

General payments to Dr. Brereton by kind, 2016 to 2025

$49.2Kin total
  • Education$10,99023%
  • Grants$10,00021%
  • Honoraria$9,00019%
  • Food and beverage$8,95018%
  • Other$9,50320%

Companies that paid Dr. Brereton the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Brereton

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Daniel Stuart Brereton graduated from Arizona College of Osteopathic Medicine - Glendale

Dr. Brereton graduated from Arizona College of Osteopathic Medicine - Glendale in 2013. Dr. Brereton is a member of American Shoulder and Elbow Surgeons.

  1. Medical schoolArizona College of Osteopathic Medicine - Glendale
  2. Board certified in orthopedic surgeryAOA Board of Orthopedic Surgery

Source: Dmand AI Professional Profile Data

Dr. Daniel Stuart Brereton accepts plans from 10 insurance carriers

Dr. Brereton is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Humana
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Molina
  • Regence Health Plans
  • +2 more carriersWith a free account

Plan types Dr. Brereton accepts, by number of carriers

  1. Medicare9
  2. PPO7
  3. HMO5
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Daniel Stuart Brereton's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Daniel Stuart Brereton

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. Daniel Stuart Brereton's NPI number?

Dr. Daniel Stuart Brereton's NPI number is 1487093951. It was assigned on June 18, 2013, and it is active in the NPI Registry.

What kind of doctor is Dr. Daniel Stuart Brereton?

Dr. Daniel Stuart Brereton is an orthopedic surgeon in La Jolla, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).

Where does Dr. Daniel Stuart Brereton practice?

Dr. Brereton practices at 9834 Genesee Ave, La Jolla, CA 92037. Dr. Brereton's primary practice is EGL Ambulatory Surgery Center in La Jolla, California. Dmand AI also links Dr. Brereton to 3 hospitals, 3 group practices and clinics, 2 medical groups and 1 home health agency.

What is Dr. Daniel Stuart Brereton's office phone number?

The practice phone on file for Dr. Brereton is (858) 453-3133.

What is Dr. Daniel Stuart Brereton's medical license number?

Dr. Brereton's California license number on file is 20A13592, one of the licenses on file in 2 states.

Which states has Dr. Daniel Stuart Brereton been licensed in?

Dmand AI has state licenses on file for Dr. Brereton in California (2014 to 2025) and Texas (2018 to 2027).

Which hospitals is Dr. Daniel Stuart Brereton affiliated with?

Dr. Brereton is affiliated with Scripps Memorial Hospital Encinitas. Dmand AI links Dr. Brereton to 3 more hospitals.

What medical group is Dr. Daniel Stuart Brereton part of?

Dr. Brereton is linked to Emergency and Acute Care Medical Corporation. Dmand AI links Dr. Brereton to 2 more medical groups.

Does Dr. Daniel Stuart Brereton accept Medicare?

Yes. CMS data shows Dr. Brereton billed Medicare for 788 services in 2024, and Dr. Brereton accepts Medicare assignment.

Does Dr. Daniel Stuart Brereton offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Brereton as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Dr. Daniel Stuart Brereton's MIPS score?

Dr. Brereton's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.

How many Medicare patients does Dr. Daniel Stuart Brereton see?

CMS counts 179 Medicare patients who saw Dr. Brereton in 2024, with an average age of 73.

Is Dr. Daniel Stuart Brereton board certified?

Yes. Dr. Brereton is board certified in orthopedic surgery by the AOA Board of Orthopedic Surgery.

What services does Dr. Daniel Stuart Brereton bill to Medicare?

In 2024, Dr. Brereton's most billed Medicare services were injected or infused drug (J3301), office visit, established patient (99214) and diagnostic imaging (73030).

Where did Dr. Daniel Stuart Brereton go to medical school?

Dr. Brereton graduated from Arizona College of Osteopathic Medicine - Glendale in 2013.

What drugs does Dr. Daniel Stuart Brereton prescribe most?

In 2024 Medicare Part D data, Dr. Brereton's most prescribed drugs by claims were Celecoxib, Hydrocodone-Acetaminophen and Oxycodone-Acetaminophen.

Has Dr. Daniel Stuart Brereton received payments from drug or device companies?

CMS Open Payments shows $49,237 in general payments to Dr. Brereton from 33 companies from 2016 to 2025. The largest total came from Encore Medical, LP.

How long has Dr. Daniel Stuart Brereton been practicing?

Dr. Brereton graduated from medical school in 2013, 13 years ago.

Does Dr. Daniel Stuart Brereton do research?

Dmand AI links 2 publications to Dr. Brereton.

Who does Dr. Daniel Stuart Brereton publish with?

Dr. Brereton's most frequent co-authors are Todd C. Moen, MD (1 shared paper), Jerrick Gene Robker, DO (1 shared paper) and John Anthony Schlechter, DO (1 shared paper).

What insurance does Dr. Daniel Stuart Brereton accept?

Dr. Brereton is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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