Jeffrey Nakashioya

  • Pomona, CA
  • Emergency medicine physician
NPI1275987596PAC ID6901133750
Medicare services, 2024
546
Medicare patients, 2024
341
Part D claims, 2024
78
MIPS score, 2024
97
Hospital affiliations
2
Practice address
1798 N Garey Ave, Pomona, CA 91767
Practice phone
Call (909) 865-9500
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Pomona Valley Hospital Medical Center

Hospital · Pomona, California

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Jeffrey Nakashioya is an emergency medicine physician in Pomona, California

Jeffrey Nakashioya practices at Pomona Valley Hospital Medical Center in Pomona, California, part of Pomona Valley Hospital Medical Center.

Jeffrey Nakashioya's NPI, 1275987596, was assigned on April 22, 2016. Jeffrey Nakashioya holds California license A152093.

NPI and contact details
Medicare PAC ID
6901133750
NPI enumeration date
April 22, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(909) 865-9500
Professional email
Get email
Personal email
Get email
Mobile number
Get number
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)

Jeffrey Nakashioya practices at Pomona Valley Hospital Medical Center in Pomona, California

Jeffrey Nakashioya's primary practice is Pomona Valley Hospital Medical Center, at 1798 N Garey Ave, Pomona, CA 91767 in Los Angeles County. The practice phone is (909) 865-9500.

Source: Dmand AI Affiliation Data

Jeffrey Nakashioya is affiliated with 2 sites of care and 1 medical group

Jeffrey Nakashioya's primary practice is Pomona Valley Hospital Medical Center in Pomona, California, part of Pomona Valley Hospital Medical Center. Jeffrey Nakashioya is also affiliated with Loma Linda University Medical Center. The medical group on file is Vituity.

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

Dmand AI tracks the EHR system at Jeffrey Nakashioya's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Jeffrey Nakashioya practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Pomona Valley Hospital Medical CenterAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Jeffrey Nakashioya is one of 7,423 emergency medicine physicians in California

Emergency medicine is Jeffrey Nakashioya's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Jeffrey Nakashioya is licensed in California.

Specialties and state licenses

  • Emergency medicine, CaliforniaPrimaryLicense A152093 · taxonomy 207P00000X

Emergency medicine physicians near Jeffrey Nakashioya

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

Jeffrey Nakashioya billed Medicare for 546 services in 2024

CMS data shows 546 Medicare services from Jeffrey Nakashioya across 4 procedure codes in 2024, for 341 Medicare patients. Medicare paid $46,186 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024546
Medicare patients341
Paid by Medicare$46,186
Procedure codes4

Jeffrey Nakashioya's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3332024: 29910%
Tests and treatments
2023: 2872024: 24714%
Imaging
2023: 112024: 0100%

Jeffrey Nakashioya compared with the California median for emergency medicine physicians, 2024

  • Jeffrey Nakashioya
  • California median
Medicare services
546vs 2652.1 times
Medicare patients
341vs 24340% above
Part D claims
22vs 6265% below

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

Jeffrey Nakashioya'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 Jeffrey Nakashioya

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

Jeffrey Nakashioya treated 341 Medicare patients in 2024, average age 73

CMS counts 341 Medicare patients who saw Jeffrey Nakashioya in 2024. The largest group is 65 to 74, with 108 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 65% are also on Medicaid. Their average risk score is 3.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Jeffrey Nakashioya's median patient age at 44, with 59% women.

Medicare patients, 2024341
Average age73
Average risk score3.03
Also on Medicaid65%

Jeffrey Nakashioya's Medicare patients by age, 2024

Jeffrey Nakashioya's Medicare patients by sex, 2024

  • Women18454%
  • Men15746%

Chronic conditions among Jeffrey Nakashioya's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes55%
  4. Arthritis48%
  5. Ischemic heart disease44%
  6. Chronic kidney disease43%
  7. Heart failure42%
  8. Mood disorders40%

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

Jeffrey Nakashioya's patients across all payers

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

Patient panel by age, all payers

Median age 44

Patient panel by sex, all payers

  • Women59%
  • Men41%

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

Jeffrey Nakashioya wrote 78 Medicare Part D claims in 2024

In 2024, Jeffrey Nakashioya wrote 78 Medicare Part D claims for 59 patients. 96% of them were for generic drugs. CMS names the drug for 22 of them, across 1 drug with 11 or more claims each, at $156 in total drug cost. In 2023, CMS named 15 claims across 1 drug.

Part D claims, 202478
Drugs named by CMS1
Total drug cost$156
Part D patients59

Jeffrey Nakashioya's Part D claims by kind of drug, 2024

  • Generic75 claims96%
  • Brand-name and other3 claims4%

Jeffrey Nakashioya'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 Jeffrey Nakashioya's Part D claims, 2024

  • Antibiotics55%43 of 78 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: 152024: 2247%

Drugs named by CMS: 1 in 2024, 1 in 2023.

See all prescribing by Jeffrey Nakashioya

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

Jeffrey Nakashioya scored 97 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Jeffrey Nakashioya for performance year 2024, reported as part of a group. Jeffrey Nakashioya accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Jeffrey Nakashioya's MIPS scores, performance year 2024

  • 97of 100Final score
  • 90of 100Quality
  • 40of 100Improvement Activities
  • 78of 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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Sources for Jeffrey Nakashioya'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
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 Jeffrey Nakashioya

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

What is Jeffrey Nakashioya's NPI number?

Jeffrey Nakashioya's NPI number is 1275987596. It was assigned on April 22, 2016, and it is active in the NPI Registry.

What does Jeffrey Nakashioya specialize in?

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

Where does Jeffrey Nakashioya practice?

Jeffrey Nakashioya practices at 1798 N Garey Ave, Pomona, CA 91767. Jeffrey Nakashioya's primary practice is Pomona Valley Hospital Medical Center in Pomona, California, part of Pomona Valley Hospital Medical Center.

What is Jeffrey Nakashioya's office phone number?

The practice phone on file for Jeffrey Nakashioya is (909) 865-9500.

What is Jeffrey Nakashioya's medical license number?

Jeffrey Nakashioya holds California license A152093.

Which hospitals is Jeffrey Nakashioya affiliated with?

Jeffrey Nakashioya practices at Pomona Valley Hospital Medical Center in Pomona, California. Jeffrey Nakashioya is also affiliated with Loma Linda University Medical Center.

What medical group is Jeffrey Nakashioya part of?

Jeffrey Nakashioya is linked to Vituity.

Does Jeffrey Nakashioya accept Medicare?

Yes. CMS data shows Jeffrey Nakashioya billed Medicare for 546 services in 2024, and Jeffrey Nakashioya accepts Medicare assignment.

What is Jeffrey Nakashioya's MIPS score?

Jeffrey Nakashioya's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.

How many Medicare patients does Jeffrey Nakashioya see?

CMS counts 341 Medicare patients who saw Jeffrey Nakashioya in 2024, with an average age of 73.

Show 3 more questionsShow fewer questions

What services does Jeffrey Nakashioya bill to Medicare?

In 2024, Jeffrey Nakashioya's most billed Medicare services were heart test or procedure (93010), emergency department visit (99285) and critical care (99291).

What drugs does Jeffrey Nakashioya prescribe most?

In 2024 Medicare Part D data, Jeffrey Nakashioya's most prescribed drugs by claims were Cephalexin.

How long has Jeffrey Nakashioya been practicing?

Jeffrey Nakashioya graduated from medical school in 2016, 10 years ago.

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