Antiviral AgentsEnzyme InhibitorsInfluenza, Human
Dr. Joshua W. Quaas, MD
NPI1417975103PAC ID5193720274
- Medicare services, 2024
- 75
- Medicare patients, 2024
- 88
- Part D claims, 2024
- 142
- Publications
- 4
- Hospital affiliations
- 2
- Practice address
- 380 West MacArthur Boulevard, Oakland, CA 94609
- Practice phone
- Call (510) 251-0121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Addiction Medicine & Recovery Services at Oakland Medical Center
Outpatient Addiction Treatment · Oakland, California
Find Dr. Quaas' professional email, personal email and mobile number
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Dr. Joshua W. Quaas is an emergency medicine physician in Oakland, California
Dr. Quaas practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.
Dr. Quaas' NPI, 1417975103, was assigned on July 18, 2006. Dr. Quaas graduated from University Of Minnesota Medical School in 2003. Dr. Quaas holds New York license 239733.
NPI and contact details
- NPI
- 1417975103NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193720274
- NPI enumeration date
- July 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 251-0121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joshua W. Quaas practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California
Dr. Quaas' primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center, at 380 West MacArthur Boulevard, Oakland, CA 94609. The practice phone is (510) 251-0121.
- Addiction Medicine & Recovery Services at Oakland Medical Center380 West MacArthur Boulevard, Oakland, CA 94609Phone(510) 251-0121
Source: Dmand AI Affiliation Data
Dr. Joshua W. Quaas is affiliated with 3 sites of care and 1 medical group
Dr. Quaas' primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dr. Quaas is also affiliated with Oakland Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Quaas to 1 more hospital, named with a free account.
Addiction Medicine & Recovery Services at Oakland Medical CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joshua W. Quaas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Quaas practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Addiction Medicine & Recovery Services at Oakland 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. Joshua W. Quaas is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Quaas' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Quaas is licensed in New York.
Specialties and state licenses
- Emergency medicine, New YorkPrimary
Emergency medicine physicians near Dr. Quaas
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. Joshua W. Quaas billed Medicare for 75 services in 2024
CMS data shows 75 Medicare services from Dr. Quaas across 3 procedure codes in 2024, for 88 Medicare patients. Medicare paid $7,431 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202475
Medicare patients88
Paid by Medicare$7,431
Procedure codes3
Dr. Quaas' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 742024: 751%
Dr. Quaas compared with the California median for emergency medicine physicians, 2024
- Dr. Quaas
- California median
- Medicare services
- 75vs 26572% below
- Medicare patients
- 88vs 24364% below
- Part D claims
- 34vs 6245% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Quaas' 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. Quaas 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. Joshua W. Quaas treated 88 Medicare patients in 2024, average age 68
CMS counts 88 Medicare patients who saw Dr. Quaas in 2024. The largest group is 65 to 74, with 31 patients. 73% of them have high blood pressure, and 61% have high cholesterol. 83% are also on Medicaid. Their average risk score is 1.98, 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. Quaas' median patient age at 40, with 56% women.
Medicare patients, 202488
Average age68
Average risk score1.98
Also on Medicaid83%
Dr. Quaas' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Quaas' Medicare patients by sex, 2024
- Women4551%
- Men4349%
Chronic conditions among Dr. Quaas' Medicare patients, 2024
- High blood pressure73%
- High cholesterol61%
- Diabetes48%
- Mood disorders39%
- Arthritis36%
- Chronic kidney disease33%
- Depression32%
- Anxiety31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Quaas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joshua W. Quaas wrote 142 Medicare Part D claims in 2024
In 2024, Dr. Quaas wrote 142 Medicare Part D claims for 116 patients. 96% of them were for generic drugs. CMS names the drug for 34 of them, across 2 drugs with 11 or more claims each, at $245 in total drug cost. In 2023, CMS named 50 claims across 3 drugs.
Part D claims, 2024142
Drugs named by CMS2
Total drug cost$245
Part D patients116
Dr. Quaas' Part D claims by kind of drug, 2024
- Generic136 claims96%
- Brand-name and other6 claims4%
Dr. Quaas' 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. Quaas' Part D claims, 2024
- Opioids22%31 of 142 claims
- Antibiotics20%28 of 142 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: 502024: 3432%
Drugs named by CMS: 2 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. Joshua W. Quaas takes part in Medicare
Dr. Quaas 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. Joshua W. Quaas has 4 publications on record
Dmand AI links 4 papers to Dr. Quaas, published from 2013 to 2021. The most frequent topics are Tomography, X-Ray Computed, Craniocerebral Trauma and Decision Making. Dr. Quaas' most frequent co-authors are Kevin Joseph Davey, MD, Bruce James Derrick, MD and Jarone Lee, MD, MPH.
Papers4
Years published2013 to 2021
Dr. Quaas' papers by year, 2013 to 2021
Topics Dr. Quaas writes about most
- Tomography, X-Ray Computed
- Craniocerebral Trauma
- Decision Making
- Decision Support Techniques
Dr. Quaas' most frequent co-authors
- Kevin Joseph Davey, MD1 shared paper
- Bruce James Derrick, MD1 shared paper
- Jarone Lee, MD, MPH1 shared paper
Recent publications by Dr. Quaas
Ann Emerg Med
CanadaClinical ProtocolsCraniocerebral Trauma
Craniocerebral TraumaDecision MakingDecision Support Techniques
Fibrin Fibrinogen Degradation ProductsPredictive Value of TestsPulmonary Embolism
See who Dr. Quaas researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Quaas works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Joshua W. Quaas graduated from University Of Minnesota Medical School
Dr. Quaas graduated from University Of Minnesota Medical School in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joshua W. Quaas'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Joshua W. Quaas
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. Joshua W. Quaas' NPI number?
Dr. Joshua W. Quaas' NPI number is 1417975103. It was assigned on July 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Joshua W. Quaas?
Dr. Joshua W. Quaas is an emergency medicine physician in Oakland, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Joshua W. Quaas practice?
Dr. Quaas practices at 380 West MacArthur Boulevard, Oakland, CA 94609. Dr. Quaas' primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dmand AI also links Dr. Quaas to 1 hospital.
What is Dr. Joshua W. Quaas' office phone number?
The practice phone on file for Dr. Quaas is (510) 251-0121.
What is Dr. Joshua W. Quaas' medical license number?
Dr. Quaas holds New York license 239733.
Which hospitals is Dr. Joshua W. Quaas affiliated with?
Dr. Quaas is affiliated with Oakland Medical Center. Dmand AI links Dr. Quaas to 1 more hospital.
What medical group is Dr. Joshua W. Quaas part of?
Dr. Quaas is linked to The Permanente Medical Group, Inc.
Does Dr. Joshua W. Quaas accept Medicare?
Yes. CMS data shows Dr. Quaas billed Medicare for 75 services in 2024, and Dr. Quaas accepts Medicare assignment.
How many Medicare patients does Dr. Joshua W. Quaas see?
CMS counts 88 Medicare patients who saw Dr. Quaas in 2024, with an average age of 68.
What services does Dr. Joshua W. Quaas bill to Medicare?
In 2024, Dr. Quaas' most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Show 5 more questionsShow fewer questions
Where did Dr. Joshua W. Quaas go to medical school?
Dr. Quaas graduated from University Of Minnesota Medical School in 2003.
What drugs does Dr. Joshua W. Quaas prescribe most?
In 2024 Medicare Part D data, Dr. Quaas' most prescribed drugs by claims were Hydrocodone-Acetaminophen and Ondansetron ODT.
How long has Dr. Joshua W. Quaas been practicing?
Dr. Quaas graduated from medical school in 2003, 23 years ago.
Does Dr. Joshua W. Quaas do research?
Dmand AI links 4 publications to Dr. Quaas, published from 2013 to 2021.
Who does Dr. Joshua W. Quaas publish with?
Dr. Quaas' most frequent co-authors are Kevin Joseph Davey, MD (1 shared paper), Bruce James Derrick, MD (1 shared paper) and Jarone Lee, MD, MPH (1 shared paper).
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