Dr. Eric Toru Hisaka, MD
- Medicare services, 2017
- 12
- Part D claims, 2024
- 33
- Industry payments
- $1,647
- Affiliated sites
- 2
- Insurance carriers
- 6
- Practice address
- 2750 Sycamore Dr, Simi Valley, CA 93065
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aspen Surgery Center - HOPD
Acute Care Hospital outpatient department · Simi Valley, California
Find Dr. Hisaka's professional email, personal email and mobile number
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Dr. Eric Toru Hisaka is a plastic surgeon in Walnut Creek, California
Dr. Hisaka practices at Aspen Surgery Center - HOPD in Simi Valley, California.
Dr. Hisaka's NPI, 1902961287, was assigned on December 27, 2006. Dr. Hisaka graduated from UC Davis School of Medicine in 1977. Dr. Hisaka's California license number on file is G037369.
- NPI
- 1902961287NPI Registry (opens in a new tab)
- NPI enumeration date
- December 27, 2006
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Eric Toru Hisaka practices in Simi Valley and Walnut Creek
Dr. Hisaka's primary practice is Aspen Surgery Center - HOPD, at 2750 Sycamore Dr, Simi Valley, CA 93065. Dr. Hisaka also practices at Aspen Surgery Center, 133 La Casa Via, Walnut Creek, CA 94598.
- Aspen Surgery Center - HOPDPrimary2750 Sycamore Dr, Simi Valley, CA 93065
- Aspen Surgery Center133 La Casa Via, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 210-8400
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Eric Toru Hisaka is affiliated with 2 sites of care
Dr. Hisaka's primary practice is Aspen Surgery Center - HOPD in Simi Valley, California. Dmand AI also links Dr. Hisaka to 1 physician office, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Eric Toru Hisaka's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hisaka practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aspen Surgery Center - HOPD | 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. Eric Toru Hisaka is one of 778 plastic surgeons in California
Plastic surgery is Dr. Hisaka's primary specialty in the NPI Registry, under taxonomy code 208200000X. Dr. Hisaka is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery. Dmand AI has Dr. Hisaka's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Plastic surgery, CaliforniaPrimary
- Ohio license
Clinical focus
Dmand AI lists head wound among the conditions Dr. Hisaka treats.
Plastic surgeons near Dr. Hisaka
Counts of plastic surgeons 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. Eric Toru Hisaka billed Medicare for 12 services in 2017
CMS data shows 12 Medicare services from Dr. Hisaka across 1 procedure code in 2017. Medicare paid $585 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hisaka compared with the California median for plastic surgeons, 2017
- Dr. Hisaka
- California median
- Medicare services
- 12vs 5879% below
- Part D claims
- 12vs 2654% below
Medians across 622 plastic surgeons in California with Dmand AI profiles that report each measure.
Dr. Hisaka's most billed Medicare procedure codes, 2017
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. Hisaka and other plastic surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Eric Toru Hisaka's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Hisaka's median patient age at 64, with 80% women.
Dr. Hisaka's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women80%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Eric Toru Hisaka wrote 33 Medicare Part D claims in 2024
In 2024, Dr. Hisaka wrote 33 Medicare Part D claims for 11 patients. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $86 in total drug cost.
Dr. Hisaka'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. Hisaka's Part D claims, 2024
- Antibiotics48%16 of 33 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
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Dr. Eric Toru Hisaka received $1,647 in industry payments from 2016 to 2022
CMS Open Payments shows 10 general payments to Dr. Hisaka from 5 drug and device companies from 2016 to 2022. Gifts make up the largest share, 75% of the total. Mentor Worldwide LLC paid the most, $1,469.
General payments to Dr. Hisaka by program year, 2016 to 2022
General payments to Dr. Hisaka by kind, 2016 to 2022
- Gifts$1,22875%
- Food and beverage$41925%
Companies that paid Dr. Hisaka the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Eric Toru Hisaka has 1 award and honors on record
Dmand AI lists 1 award for Dr. Hisaka, most recently Oakland Magazine in 2006.
Awards and honors for Dr. Hisaka
- 2006
- Oakland Magazine
Source: Dmand AI Professional Profile Data
Dr. Eric Toru Hisaka graduated from UC Davis School of Medicine
Dr. Hisaka graduated from UC Davis School of Medicine in 1977.
- Medical school
- Board certified in otolaryngology
- Board certified in plastic surgery
Source: Dmand AI Professional Profile Data
Dr. Eric Toru Hisaka accepts plans from 6 insurance carriers
Dr. Hisaka is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Hisaka accepts, by number of carriers
- Medicare6
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Eric Toru Hisaka'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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 Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Eric Toru Hisaka
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. Eric Toru Hisaka's NPI number?
Dr. Eric Toru Hisaka's NPI number is 1902961287. It was assigned on December 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Eric Toru Hisaka?
Dr. Eric Toru Hisaka is a plastic surgeon in Walnut Creek, California. The primary specialty in the NPI Registry is Plastic Surgery Physician (taxonomy code 208200000X).
Where does Dr. Eric Toru Hisaka practice?
Dr. Hisaka practices at 2750 Sycamore Dr, Simi Valley, CA 93065. Dr. Hisaka also practices at 133 La Casa Via, Walnut Creek, CA 94598. Dr. Hisaka's primary practice is Aspen Surgery Center - HOPD in Simi Valley, California. Dmand AI also links Dr. Hisaka to 1 physician office.
What is Dr. Eric Toru Hisaka's medical license number?
Dr. Hisaka's California license number on file is G037369, one of the licenses on file in 2 states.
Which states has Dr. Eric Toru Hisaka been licensed in?
Dmand AI has state licenses on file for Dr. Hisaka in California (1978 to 2025) and Ohio (1981 to 1984).
Does Dr. Eric Toru Hisaka accept Medicare?
Yes. CMS data shows Dr. Hisaka billed Medicare for 12 services in 2017.
Is Dr. Eric Toru Hisaka board certified?
Yes. Dr. Hisaka is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery.
What services does Dr. Eric Toru Hisaka bill to Medicare?
In 2017, Dr. Hisaka's most billed Medicare services were emergency department visit (99283).
Where did Dr. Eric Toru Hisaka go to medical school?
Dr. Hisaka graduated from UC Davis School of Medicine in 1977.
What drugs does Dr. Eric Toru Hisaka prescribe most?
In 2024 Medicare Part D data, Dr. Hisaka's most prescribed drugs by claims were Azithromycin.
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Has Dr. Eric Toru Hisaka received payments from drug or device companies?
CMS Open Payments shows $1,647 in general payments to Dr. Hisaka from 5 companies from 2016 to 2022. The largest total came from Mentor Worldwide LLC.
How long has Dr. Eric Toru Hisaka been practicing?
Dr. Hisaka graduated from medical school in 1977, 49 years ago.
What insurance does Dr. Eric Toru Hisaka accept?
Dr. Hisaka is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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