Dr. Denise Akimi Ishimaru, MD
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 34
- Part D claims, 2024
- 105
- Hospital affiliations
- 2
- Industry payments
- $383
- Practice address
- 20911 Earl St, Torrance, CA 90503
- Practice phone
- Call (310) 793-8075
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Providence Medical Institute
Torrance, California
Find Dr. Ishimaru's professional email, personal email and mobile number
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Dr. Denise Akimi Ishimaru is an OB-GYN in Torrance, California
Dr. Ishimaru practices at Providence Medical Institute in Torrance, California.
Dr. Ishimaru's NPI, 1225219066, was assigned on November 20, 2007. Dr. Ishimaru graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2004. Dr. Ishimaru holds California license A92469.
- NPI
- 1225219066NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840351797
- NPI enumeration date
- November 20, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 793-8075
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Denise Akimi Ishimaru practices at Providence Medical Institute in Torrance, California
Dr. Ishimaru's primary practice is Providence Medical Institute, at 20911 Earl St, Torrance, CA 90503 in Los Angeles County. The practice phone is (310) 793-8075.
- Providence Medical Institute20911 Earl St, Torrance, CA 90503 · Los Angeles CountyPhone(310) 793-8075
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Denise Akimi Ishimaru is affiliated with 4 sites of care and 1 medical group
Dr. Ishimaru's primary practice is Providence Medical Institute in Torrance, California. Dr. Ishimaru is also affiliated with Torrance Memorial Medical Center. The medical group on file is Providence Medical Institute. Dmand AI also links Dr. Ishimaru to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Denise Akimi Ishimaru's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ishimaru practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Medical Institute | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Denise Akimi Ishimaru is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Ishimaru's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Ishimaru is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Ishimaru is licensed in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
Clinical focus
Dmand AI lists menopause and UTI among the conditions Dr. Ishimaru treats.
OB-GYNs near Dr. Ishimaru
Counts of OB-GYNs 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. Denise Akimi Ishimaru billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. Ishimaru across 1 procedure code in 2024, for 34 Medicare patients. Medicare paid $944 for them. Every service was in an office.
Dr. Ishimaru's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 302024: 2227%
Dr. Ishimaru compared with the California median for OB-GYNs, 2024
- Dr. Ishimaru
- California median
- Medicare services
- 22vs 5862% below
- Medicare patients
- 34vs 5235% below
- Part D claims
- 48vs 3537% above
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Ishimaru'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ishimaru and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Denise Akimi Ishimaru treated 34 Medicare patients in 2024, average age 69
CMS counts 34 Medicare patients who saw Dr. Ishimaru in 2024. The largest group is 65 to 74, with 19 patients. 75% of them have high cholesterol, and 65% have high blood pressure. Their average risk score is 0.65, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ishimaru's median patient age at 41, with 97% women.
Dr. Ishimaru's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Ishimaru's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Osteoporosis44%
- Arthritis38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ishimaru's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women97%
- Men1%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Denise Akimi Ishimaru wrote 105 Medicare Part D claims in 2024
In 2024, Dr. Ishimaru wrote 105 Medicare Part D claims for 33 patients. 80% of them were for generic drugs. CMS names the drug for 48 of them, across 2 drugs with 11 or more claims each, at $3,765 in total drug cost. In 2023, CMS named 52 claims across 3 drugs.
Dr. Ishimaru's Part D claims by kind of drug, 2024
- Generic84 claims80%
- Brand-name21 claims20%
Dr. Ishimaru'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 522024: 488%
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. Denise Akimi Ishimaru takes part in Medicare
Dr. Ishimaru 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. Denise Akimi Ishimaru received $383 in industry payments from 2016 to 2025
CMS Open Payments shows 17 general payments to Dr. Ishimaru from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $70.
General payments to Dr. Ishimaru by program year, 2016 to 2025
Companies that paid Dr. Ishimaru the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Denise Akimi Ishimaru has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ishimaru.
Awards and honors for Dr. Ishimaru
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Denise Akimi Ishimaru graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Ishimaru graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2004. Dr. Ishimaru is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Denise Akimi Ishimaru accepts plans from 11 insurance carriers
Dr. Ishimaru is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- +3 more carriersWith a free account
Plan types Dr. Ishimaru accepts, by number of carriers
- Medicare8
- PPO7
- HMO5
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Denise Akimi Ishimaru'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 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) |
| 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. Denise Akimi Ishimaru
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. Denise Akimi Ishimaru's NPI number?
Dr. Denise Akimi Ishimaru's NPI number is 1225219066. It was assigned on November 20, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Denise Akimi Ishimaru?
Dr. Denise Akimi Ishimaru is an OB-GYN in Torrance, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Denise Akimi Ishimaru practice?
Dr. Ishimaru practices at 20911 Earl St, Torrance, CA 90503. Dr. Ishimaru's primary practice is Providence Medical Institute in Torrance, California. Dmand AI also links Dr. Ishimaru to 1 hospital and 1 group practice or clinic.
What is Dr. Denise Akimi Ishimaru's office phone number?
The practice phone on file for Dr. Ishimaru is (310) 793-8075.
What is Dr. Denise Akimi Ishimaru's medical license number?
Dr. Ishimaru holds California license A92469.
Which hospitals is Dr. Denise Akimi Ishimaru affiliated with?
Dr. Ishimaru is affiliated with Torrance Memorial Medical Center. Dmand AI links Dr. Ishimaru to 1 more hospital.
What medical group is Dr. Denise Akimi Ishimaru part of?
Dr. Ishimaru is linked to Providence Medical Institute.
Does Dr. Denise Akimi Ishimaru accept Medicare?
Yes. CMS data shows Dr. Ishimaru billed Medicare for 22 services in 2024, and Dr. Ishimaru accepts Medicare assignment.
How many Medicare patients does Dr. Denise Akimi Ishimaru see?
CMS counts 34 Medicare patients who saw Dr. Ishimaru in 2024, with an average age of 69.
Is Dr. Denise Akimi Ishimaru board certified?
Yes. Dr. Ishimaru is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Show 6 more questionsShow fewer questions
What services does Dr. Denise Akimi Ishimaru bill to Medicare?
In 2024, Dr. Ishimaru's most billed Medicare services were medicare service (G0101).
Where did Dr. Denise Akimi Ishimaru go to medical school?
Dr. Ishimaru graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2004.
What drugs does Dr. Denise Akimi Ishimaru prescribe most?
In 2024 Medicare Part D data, Dr. Ishimaru's most prescribed drugs by claims were Estradiol and Alendronate Sodium.
Has Dr. Denise Akimi Ishimaru received payments from drug or device companies?
CMS Open Payments shows $383 in general payments to Dr. Ishimaru from 13 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Denise Akimi Ishimaru been practicing?
Dr. Ishimaru graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Denise Akimi Ishimaru accept?
Dr. Ishimaru is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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