Joshua Nackenson

  • Fremont, CA
  • Emergency medicine physician
NPI1033573498PAC ID9133484769
Medicare services, 2024
535
Medicare patients, 2024
387
Part D claims, 2024
174
Publications
3
Hospital affiliations
2
Practice address
2000 Mowry Ave, Fremont, CA 94538
Practice phone
Call (510) 797-1111
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Washington Health

Hospital · Fremont, California

See all 13 affiliations

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Joshua Nackenson is an emergency medicine physician in Fremont, California

Joshua Nackenson practices at Washington Health in Fremont, California, part of Washington Health.

Joshua Nackenson's NPI, 1033573498, was assigned on April 11, 2016. Joshua Nackenson graduated from University of Miami, Miller School of Medicine in 2016. Joshua Nackenson's Texas license number on file is R4604.

NPI and contact details
Medicare PAC ID
9133484769
NPI enumeration date
April 11, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(510) 797-1111
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
36
Medical school graduation
2016

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

Joshua Nackenson practices at Washington Health in Fremont, California

Joshua Nackenson's primary practice is Washington Health, at 2000 Mowry Ave, Fremont, CA 94538 in Alameda County. The practice phone is (510) 797-1111.

  • Washington Health
    2000 Mowry Ave, Fremont, CA 94538 · Alameda CountyPhone(510) 797-1111

Source: Dmand AI Affiliation Data

Joshua Nackenson is affiliated with 7 sites of care and 6 medical groups

Joshua Nackenson's primary practice is Washington Health in Fremont, California, part of Washington Health. Joshua Nackenson is also affiliated with Santa Clara Valley Medical Center. The medical group on file is Emergency Physicians Associates. Dmand AI also links Joshua Nackenson to 5 more group practices and clinics and 5 medical groups, each named with a free account.

See all 13 affiliations for Joshua Nackenson

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Joshua Nackenson's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Joshua Nackenson practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Washington HealthAvailable with a free account
+6 more sites and 5 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Joshua Nackenson is one of 7,423 emergency medicine physicians in California

Emergency medicine is Joshua Nackenson's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Joshua Nackenson is board certified in emergency medical services by the American Board of Emergency Medicine. Dmand AI has Joshua Nackenson's licenses on file in 2 states: Texas and California.

Specialties and state licenses

  • Emergency medicine, TexasPrimaryLicense R4604 · 2017 to 2024 · taxonomy 207P00000X
  • California license2020 to 2026

Emergency medicine physicians near Joshua Nackenson

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

Joshua Nackenson billed Medicare for 535 services in 2024

CMS data shows 535 Medicare services from Joshua Nackenson across 5 procedure codes in 2024, for 387 Medicare patients. Medicare paid $56,396 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024535
Medicare patients387
Paid by Medicare$56,396
Procedure codes5

Joshua Nackenson's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3502024: 40315%
Tests and treatments
2023: 1642024: 11629%
Imaging
2023: 312024: 1648%

Joshua Nackenson compared with the California median for emergency medicine physicians, 2024

  • Joshua Nackenson
  • California median
Medicare services
535vs 2652.0 times
Medicare patients
387vs 24359% above
Part D claims
83vs 6234% above

Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.

Joshua Nackenson'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

Joshua Nackenson treated 387 Medicare patients in 2024, average age 73

CMS counts 387 Medicare patients who saw Joshua Nackenson in 2024. The largest group is 65 to 74, with 115 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 67% are also on Medicaid. Their average risk score is 2.61, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Joshua Nackenson's median patient age at 42, with 50% women.

Medicare patients, 2024387
Average age73
Average risk score2.61
Also on Medicaid67%

Joshua Nackenson's Medicare patients by age, 2024

Joshua Nackenson's Medicare patients by sex, 2024

  • Women21155%
  • Men17645%

Chronic conditions among Joshua Nackenson's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes59%
  4. Arthritis43%
  5. Ischemic heart disease43%
  6. Chronic kidney disease42%
  7. Heart failure39%
  8. Mood disorders38%

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

Joshua Nackenson's patients across all payers

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

Patient panel by age, all payers

Median age 42

Patient panel by sex, all payers

  • Women50%
  • Men49%

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

Joshua Nackenson wrote 174 Medicare Part D claims in 2024

In 2024, Joshua Nackenson wrote 174 Medicare Part D claims for 121 patients. 91% of them were for generic drugs. CMS names the drug for 83 of them, across 4 drugs with 11 or more claims each, at $910 in total drug cost. In 2023, CMS named 75 claims across 3 drugs.

Part D claims, 2024174
Drugs named by CMS4
Total drug cost$910
Part D patients121

Joshua Nackenson's Part D claims by kind of drug, 2024

  • Generic159 claims91%
  • Brand-name and other15 claims9%

Joshua Nackenson'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 Joshua Nackenson's Part D claims, 2024

  • Antibiotics25%44 of 174 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: 752024: 8311%

Drugs named by CMS: 4 in 2024, 3 in 2023.

See all prescribing by Joshua Nackenson

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 Joshua Nackenson takes part in Medicare

Joshua Nackenson 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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Joshua Nackenson has 3 publications on record

Dmand AI links 3 papers to Joshua Nackenson, published from 2016 to 2017. Joshua Nackenson's most frequent co-authors are Jonathan P. Meizoso, MD, MSPH and Bryan Alexander Stepanenko, MD, MPH.

Papers3
Years published2016 to 2017

Joshua Nackenson's most frequent co-authors

Recent publications by Joshua Nackenson

See all 3 publications and co-authors

See who Joshua Nackenson researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Joshua Nackenson works with, so you can find a warm path to the right emergency medicine physicians.

How network discovery works

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

Joshua Nackenson received $80 in industry payments in 2019

CMS Open Payments shows 1 general payment to Joshua Nackenson from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Philips Electronics North America Corporation paid the most, $80.

Companies that paid Joshua Nackenson the most, 2019 to 2019

Share is of all general payments to this clinician.

See all payments to Joshua Nackenson

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

Joshua Nackenson graduated from University of Miami, Miller School of Medicine

Joshua Nackenson graduated from University of Miami, Miller School of Medicine in 2016.

  1. Medical schoolUniversity of Miami, Miller School of Medicine
  2. Board certified in emergency medical servicesAmerican Board of Emergency Medicine
  3. Board certified in emergency medicineAmerican Board of Emergency Medicine

Source: Dmand AI Professional Profile Data

Joshua Nackenson accepts plans from 16 insurance carriers

Joshua Nackenson is in network with 16 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Aetna. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Aetna
  • Alliant Health Plans
  • Blue Cross Blue Shield of Massachusetts
  • Elevance
  • HCSC
  • Arkansas Blue Cross and Blue Shield
  • +8 more carriersWith a free account

Plan types Joshua Nackenson accepts, by number of carriers

  1. HMO9
  2. PPO9
  3. Medicare4
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Joshua Nackenson'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 DataDmand AI Org Hierarchy 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)
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 Joshua Nackenson

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Joshua Nackenson's NPI number?

Joshua Nackenson's NPI number is 1033573498. It was assigned on April 11, 2016, and it is active in the NPI Registry.

What does Joshua Nackenson specialize in?

Joshua Nackenson is an emergency medicine physician in Fremont, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Joshua Nackenson practice?

Joshua Nackenson practices at 2000 Mowry Ave, Fremont, CA 94538. Joshua Nackenson's primary practice is Washington Health in Fremont, California, part of Washington Health. Dmand AI also links Joshua Nackenson to 5 group practices and clinics and 5 medical groups.

What is Joshua Nackenson's office phone number?

The practice phone on file for Joshua Nackenson is (510) 797-1111.

What is Joshua Nackenson's medical license number?

Joshua Nackenson's Texas license number on file is R4604, one of the licenses on file in 2 states.

Which states has Joshua Nackenson been licensed in?

Dmand AI has state licenses on file for Joshua Nackenson in Texas (2017 to 2024) and California (2020 to 2026).

Which hospitals is Joshua Nackenson affiliated with?

Joshua Nackenson practices at Washington Health in Fremont, California. Joshua Nackenson is also affiliated with Santa Clara Valley Medical Center.

What medical group is Joshua Nackenson part of?

Joshua Nackenson is linked to Emergency Physicians Associates. Dmand AI links Joshua Nackenson to 5 more medical groups.

Does Joshua Nackenson accept Medicare?

Yes. CMS data shows Joshua Nackenson billed Medicare for 535 services in 2024, and Joshua Nackenson accepts Medicare assignment.

How many Medicare patients does Joshua Nackenson see?

CMS counts 387 Medicare patients who saw Joshua Nackenson in 2024, with an average age of 73.

Show 9 more questionsShow fewer questions

Is Joshua Nackenson board certified?

Yes. Joshua Nackenson is board certified in emergency medical services by the American Board of Emergency Medicine.

What services does Joshua Nackenson bill to Medicare?

In 2024, Joshua Nackenson's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).

Where did Joshua Nackenson go to medical school?

Joshua Nackenson graduated from University of Miami, Miller School of Medicine in 2016.

What drugs does Joshua Nackenson prescribe most?

In 2024 Medicare Part D data, Joshua Nackenson's most prescribed drugs by claims were Naproxen, Ondansetron ODT and Cefdinir.

Has Joshua Nackenson received payments from drug or device companies?

CMS Open Payments shows $80 in general payments to Joshua Nackenson from 1 company from 2019 to 2019. The largest total came from Philips Electronics North America Corporation.

How long has Joshua Nackenson been practicing?

Joshua Nackenson graduated from medical school in 2016, 10 years ago.

Does Joshua Nackenson do research?

Dmand AI links 3 publications to Joshua Nackenson, published from 2016 to 2017.

Who does Joshua Nackenson publish with?

Joshua Nackenson's most frequent co-authors are Jonathan P. Meizoso, MD, MSPH (1 shared paper) and Bryan Alexander Stepanenko, MD, MPH (1 shared paper).

What insurance does Joshua Nackenson accept?

Joshua Nackenson is in network with 16 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Aetna. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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