Dr. Ann Reed Barnett, MD
- Medicare services, 2024
- 538
- Medicare patients, 2024
- 507
- Part D claims, 2024
- 178
- Hospital affiliations
- 3
- Industry payments
- $190
- Practice address
- 300 W Huntington Dr, Arcadia, CA 91007
- Practice phone
- Call (626) 898-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Barnett's professional email, personal email and mobile number
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Dr. Ann Reed Barnett is an emergency medicine physician in Arcadia, California
Dr. Barnett practices at USC Arcadia Hospital in Arcadia, California, part of University of Southern California.
Dr. Barnett's NPI, 1912224528, was assigned on April 23, 2010. Dr. Barnett graduated from Keck School of Medicine of USC in 2010. Dr. Barnett holds California license C170665.
- NPI
- 1912224528NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911128814
- NPI enumeration date
- April 23, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 898-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ann Reed Barnett practices at USC Arcadia Hospital in Arcadia, California
Dr. Barnett's primary practice is USC Arcadia Hospital, at 300 W Huntington Dr, Arcadia, CA 91007 in Los Angeles County. The practice phone is (626) 898-8000.
- USC Arcadia Hospital300 W Huntington Dr, Arcadia, CA 91007 · Los Angeles CountyPhone(626) 898-8000
Source: Dmand AI Affiliation Data
Dr. Ann Reed Barnett is affiliated with 3 sites of care and 4 medical groups
Dr. Barnett's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dr. Barnett is also affiliated with PIH Health Good Samaritan Hospital. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Barnett to 1 more hospital and 3 medical groups, 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. Ann Reed Barnett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barnett practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| USC Arcadia Hospital | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ann Reed Barnett is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Barnett's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Barnett is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Barnett's licenses on file in 3 states: California, Tennessee and Louisiana.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Tennessee license
- Louisiana license
Emergency medicine physicians near Dr. Barnett
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. Ann Reed Barnett billed Medicare for 538 services in 2024
CMS data shows 538 Medicare services from Dr. Barnett across 4 procedure codes in 2024, for 507 Medicare patients. Medicare paid $69,729 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Barnett's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5292024: 5251%
- Tests and treatments
- 2023: 722024: 1382%
Dr. Barnett compared with the California median for emergency medicine physicians, 2024
- Dr. Barnett
- California median
- Medicare services
- 538vs 2652.0 times
- Medicare patients
- 507vs 2432.1 times
- Part D claims
- 51vs 6218% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Barnett'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. Barnett 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. Ann Reed Barnett treated 507 Medicare patients in 2024, average age 78
CMS counts 507 Medicare patients who saw Dr. Barnett in 2024. The largest group is 85 and over, with 162 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.85, 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. Barnett's median patient age at 54, with 56% women.
Dr. Barnett's Medicare patients by age, 2024
Dr. Barnett's Medicare patients by sex, 2024
- Women27955%
- Men22845%
Chronic conditions among Dr. Barnett's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Diabetes57%
- Chronic kidney disease51%
- Ischemic heart disease48%
- Heart failure47%
- Mood disorders43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barnett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ann Reed Barnett wrote 178 Medicare Part D claims in 2024
In 2024, Dr. Barnett wrote 178 Medicare Part D claims for 121 patients. 92% of them were for generic drugs. CMS names the drug for 51 of them, across 3 drugs with 11 or more claims each, at $262 in total drug cost. In 2023, CMS named 45 claims across 3 drugs.
Dr. Barnett's Part D claims by kind of drug, 2024
- Generic164 claims92%
- Brand-name and other14 claims8%
Dr. Barnett'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. Barnett's Part D claims, 2024
- Opioids8%14 of 178 claims
- Antibiotics30%54 of 178 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: 452024: 5113%
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. Ann Reed Barnett takes part in Medicare
Dr. Barnett accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ann Reed Barnett received $190 in industry payments from 2017 to 2024
CMS Open Payments shows 11 general payments to Dr. Barnett from 5 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $92.
General payments to Dr. Barnett by program year, 2017 to 2024
Companies that paid Dr. Barnett the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ann Reed Barnett graduated from Keck School of Medicine of USC
Dr. Barnett graduated from Keck School of Medicine of USC in 2010.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Ann Reed Barnett accepts plans from 8 insurance carriers
Dr. Barnett is in network with 8 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- GA State Medicaid
- KY State Medicaid
Plan types Dr. Barnett accepts, by number of carriers
- Medicare5
- PPO5
- HMO2
- Medicaid2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ann Reed Barnett'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 | Doctors and Clinicians National Downloadable File (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. Ann Reed Barnett
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. Ann Reed Barnett's NPI number?
Dr. Ann Reed Barnett's NPI number is 1912224528. It was assigned on April 23, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Ann Reed Barnett?
Dr. Ann Reed Barnett is an emergency medicine physician in Arcadia, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Ann Reed Barnett practice?
Dr. Barnett practices at 300 W Huntington Dr, Arcadia, CA 91007. Dr. Barnett's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dmand AI also links Dr. Barnett to 1 hospital and 3 medical groups.
What is Dr. Ann Reed Barnett's office phone number?
The practice phone on file for Dr. Barnett is (626) 898-8000.
What is Dr. Ann Reed Barnett's medical license number?
Dr. Barnett holds California license C170665, one of the licenses on file in 3 states.
Which states has Dr. Ann Reed Barnett been licensed in?
Dmand AI has state licenses on file for Dr. Barnett in California (2020 to 2026), Tennessee (2014 to 2027) and Louisiana (2012 to 2015).
Which hospitals is Dr. Ann Reed Barnett affiliated with?
Dr. Barnett practices at USC Arcadia Hospital in Arcadia, California. Dr. Barnett is also affiliated with PIH Health Good Samaritan Hospital. Dmand AI links Dr. Barnett to 1 more hospital.
What medical group is Dr. Ann Reed Barnett part of?
Dr. Barnett is linked to USC Care Medical Group. Dmand AI links Dr. Barnett to 3 more medical groups.
Does Dr. Ann Reed Barnett accept Medicare?
Yes. CMS data shows Dr. Barnett billed Medicare for 538 services in 2024, and Dr. Barnett accepts Medicare assignment.
How many Medicare patients does Dr. Ann Reed Barnett see?
CMS counts 507 Medicare patients who saw Dr. Barnett in 2024, with an average age of 78.
Show 7 more questionsShow fewer questions
Is Dr. Ann Reed Barnett board certified?
Yes. Dr. Barnett is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Ann Reed Barnett bill to Medicare?
In 2024, Dr. Barnett's most billed Medicare services were emergency department visit (99285), critical care (99291) and emergency department visit (99284).
Where did Dr. Ann Reed Barnett go to medical school?
Dr. Barnett graduated from Keck School of Medicine of USC in 2010.
What drugs does Dr. Ann Reed Barnett prescribe most?
In 2024 Medicare Part D data, Dr. Barnett's most prescribed drugs by claims were Ondansetron ODT, Cephalexin and Duloxetine HCl.
Has Dr. Ann Reed Barnett received payments from drug or device companies?
CMS Open Payments shows $190 in general payments to Dr. Barnett from 5 companies from 2017 to 2024. The largest total came from Allergan Inc.
How long has Dr. Ann Reed Barnett been practicing?
Dr. Barnett graduated from medical school in 2010, 16 years ago.
What insurance does Dr. Ann Reed Barnett accept?
Dr. Barnett is in network with 8 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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