Dr. Alexandra O. Duffy, DO
- Medicare services, 2024
- 672
- Medicare patients, 2024
- 293
- Part D claims, 2024
- 1,953
- Publications
- 4
- MIPS score, 2024
- 83
- Practice address
- 2315 Stockton Boulevard, Sacramento, CA 95817
- Practice phone
- Call (916) 734-2011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Duffy's professional email, personal email and mobile number
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Dr. Alexandra O. Duffy is a neurologist in Sacramento, California
Dr. Duffy practices at UC Davis Medical Center in Sacramento, California, part of University of California Health.
Dr. Duffy's NPI, 1316212814, was assigned on March 15, 2012. Dr. Duffy graduated from Touro University California - Vallejo in 2010. Dr. Duffy holds California license 20A12176.
- NPI
- 1316212814NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830318773
- NPI enumeration date
- March 15, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (916) 734-2011
- 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. Alexandra O. Duffy practices at UC Davis Medical Center in Sacramento, California
Dr. Duffy's primary practice is UC Davis Medical Center, at 2315 Stockton Boulevard, Sacramento, CA 95817 in Sacramento County. The practice phone is (916) 734-2011.
- UC Davis Medical Center2315 Stockton Boulevard, Sacramento, CA 95817 · Sacramento CountyPhone(916) 734-2011
Source: Dmand AI Affiliation Data
Dr. Alexandra O. Duffy is affiliated with 2 sites of care and 1 medical group
Dr. Duffy's primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. The medical group on file is UC Davis Medical Group. Dmand AI also links Dr. Duffy to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexandra O. Duffy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duffy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UC Davis Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexandra O. Duffy is one of 2,207 neurologists in California
Neurology is Dr. Duffy's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Duffy is board certified in neurology by the American Board of Psychiatry and Neurology. Dr. Duffy is licensed in California.
Specialties and state licenses
- Neurology, CaliforniaPrimary
Clinical focus
Dmand AI lists acute mini-stroke (TIA), epilepsy, essential tremor, lower back pain, migraine and chronic headache, mobility impairment, neck pain and spine problems and neuropathy among the conditions Dr. Duffy treats.
Neurologists near Dr. Duffy
Counts of neurologists 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. Alexandra O. Duffy billed Medicare for 672 services in 2024
CMS data shows 672 Medicare services from Dr. Duffy across 7 procedure codes in 2024, for 293 Medicare patients. Medicare paid $37,094 for them.
Dr. Duffy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3962024: 4001%
- Other services
- 2023: 372024: 272635%
- Tests and treatments
- 2023: 452024: 0100%
Where Dr. Duffy's Medicare services took place, 2024
- In an office61191%
- In a facility619%
Dr. Duffy compared with the California median for neurologists, 2024
- Dr. Duffy
- California median
- Medicare services
- 672vs 40466% above
- Medicare patients
- 293vs 19054% above
- Part D claims
- 1,795vs 3245.5 times
Medians across 1,995 neurologists in California with Dmand AI profiles that report each measure.
Dr. Duffy'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexandra O. Duffy treated 293 Medicare patients in 2024, average age 71
CMS counts 293 Medicare patients who saw Dr. Duffy in 2024. The largest group is 65 to 74, with 108 patients. 65% of them have high cholesterol, and 57% have high blood pressure. 25% are also on Medicaid. Their average risk score is 1.55, 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. Duffy's median patient age at 65, with 49% women.
Dr. Duffy's Medicare patients by age, 2024
Dr. Duffy's Medicare patients by sex, 2024
- Women13446%
- Men15954%
Chronic conditions among Dr. Duffy's Medicare patients, 2024
- High cholesterol65%
- High blood pressure57%
- Parkinson's disease49%
- Arthritis43%
- Mood disorders43%
- Depression41%
- Anxiety39%
- Diabetes21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Duffy's 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
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexandra O. Duffy wrote 1,953 Medicare Part D claims in 2024
In 2024, Dr. Duffy wrote 1,953 Medicare Part D claims for 208 patients. 86% of them were for generic drugs. CMS names the drug for 1,795 of them, across 29 drugs with 11 or more claims each, at $1,074,891 in total drug cost. In 2023, CMS named 1,324 claims across 25 drugs.
Dr. Duffy's Part D claims by kind of drug, 2024
- Generic1,679 claims86%
- Brand-name274 claims14%
Dr. Duffy'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. Duffy's Part D claims, 2024
- Antipsychotics, patients 65 and over6%115 of 1,953 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: 1,3242024: 1,79536%
Drugs named by CMS: 29 in 2024, 25 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. Alexandra O. Duffy scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Duffy for performance year 2024, reported as part of a group. Dr. Duffy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Duffy as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Duffy's MIPS scores, performance year 2024
- 83of 100Final score
- 64.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 69of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Alexandra O. Duffy has 4 publications on record
Dmand AI links 4 papers to Dr. Duffy, published from 2016 to 2021. Dr. Duffy's most frequent co-authors are Vicki L. Wheelock, MD, David Philip Bissig, MD, PhD and Fredric Austin Gorin, MD.
Dr. Duffy's papers by year, 2016 to 2021
Dr. Duffy's most frequent co-authors
- Vicki L. Wheelock, MD2 shared papers
- David Philip Bissig, MD, PhD1 shared paper
- Fredric Austin Gorin, MD1 shared paper
Recent publications by Dr. Duffy
See who Dr. Duffy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Duffy works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alexandra O. Duffy received $221 in industry payments from 2017 to 2023
CMS Open Payments shows 4 general payments to Dr. Duffy from 3 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $185.
General payments to Dr. Duffy by program year, 2017 to 2023
Companies that paid Dr. Duffy the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexandra O. Duffy graduated from Touro University California - Vallejo
Dr. Duffy graduated from Touro University California - Vallejo in 2010.
- Medical school
- Board certified in neurology
Source: Dmand AI Professional Profile Data
Dr. Alexandra O. Duffy accepts plans from 9 insurance carriers
Dr. Duffy is in network with 9 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Duffy accepts, by number of carriers
- Medicare7
- PPO6
- EPO3
- HMO3
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Alexandra O. Duffy'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)Clinician Public Reporting: Overall MIPS Performance (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. Alexandra O. Duffy
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. Alexandra O. Duffy's NPI number?
Dr. Alexandra O. Duffy's NPI number is 1316212814. It was assigned on March 15, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexandra O. Duffy?
Dr. Alexandra O. Duffy is a neurologist in Sacramento, California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Alexandra O. Duffy practice?
Dr. Duffy practices at 2315 Stockton Boulevard, Sacramento, CA 95817. Dr. Duffy's primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. Dmand AI also links Dr. Duffy to 1 group practice or clinic.
What is Dr. Alexandra O. Duffy's office phone number?
The practice phone on file for Dr. Duffy is (916) 734-2011.
What is Dr. Alexandra O. Duffy's medical license number?
Dr. Duffy holds California license 20A12176.
Which hospitals is Dr. Alexandra O. Duffy affiliated with?
Dr. Duffy practices at UC Davis Medical Center in Sacramento, California.
What medical group is Dr. Alexandra O. Duffy part of?
Dr. Duffy is linked to UC Davis Medical Group.
Does Dr. Alexandra O. Duffy accept Medicare?
Yes. CMS data shows Dr. Duffy billed Medicare for 672 services in 2024, and Dr. Duffy accepts Medicare assignment.
Does Dr. Alexandra O. Duffy offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Duffy as offering telehealth services.
What is Dr. Alexandra O. Duffy's MIPS score?
Dr. Duffy's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Alexandra O. Duffy see?
CMS counts 293 Medicare patients who saw Dr. Duffy in 2024, with an average age of 71.
Is Dr. Alexandra O. Duffy board certified?
Yes. Dr. Duffy is board certified in neurology by the American Board of Psychiatry and Neurology.
What services does Dr. Alexandra O. Duffy bill to Medicare?
In 2024, Dr. Duffy's most billed Medicare services were medicare service (G2211), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Alexandra O. Duffy go to medical school?
Dr. Duffy graduated from Touro University California - Vallejo in 2010.
What drugs does Dr. Alexandra O. Duffy prescribe most?
In 2024 Medicare Part D data, Dr. Duffy's most prescribed drugs by claims were Carbidopa-Levodopa, Carbidopa-Levodopa ER and Sertraline HCl.
Has Dr. Alexandra O. Duffy received payments from drug or device companies?
CMS Open Payments shows $221 in general payments to Dr. Duffy from 3 companies from 2017 to 2023. The largest total came from Genentech, Inc.
How long has Dr. Alexandra O. Duffy been practicing?
Dr. Duffy graduated from medical school in 2010, 16 years ago.
Does Dr. Alexandra O. Duffy do research?
Dmand AI links 4 publications to Dr. Duffy, published from 2016 to 2021.
Who does Dr. Alexandra O. Duffy publish with?
Dr. Duffy's most frequent co-authors are Vicki L. Wheelock, MD (2 shared papers), David Philip Bissig, MD, PhD (1 shared paper) and Fredric Austin Gorin, MD (1 shared paper).
What insurance does Dr. Alexandra O. Duffy accept?
Dr. Duffy is in network with 9 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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