Dr. Ryuko Ishikawa, MD
- Part D claims, 2019
- 44
- Industry payments
- $522
- Insurance carriers
- 6
- State license
- 1
- Year NPI issued
- 2010
- Practice address
- 2542 S Bascom Ave, Campbell, CA 95008
- Practice phone
- Call (415) 640-1455
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Ishikawa's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ryuko Ishikawa is a psychiatrist in Campbell, California
Dr. Ishikawa practices in Campbell, California.
Dr. Ishikawa's NPI, 1053629634, was assigned on September 17, 2010. Dr. Ishikawa graduated from Tohoku University Faculty of Medicine in 1962. Dr. Ishikawa's California license number on file is A42754.
- NPI
- 1053629634NPI Registry (opens in a new tab)
- NPI enumeration date
- September 17, 2010
- NPI status
- Active
- Practice phone
- (415) 640-1455
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1962
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Ryuko Ishikawa's practice address is in Campbell, California
Dr. Ishikawa's practice address in the NPI Registry is 2542 S Bascom Ave, Campbell, CA 95008, in Santa Clara County. The practice phone is (415) 640-1455.
- NPI Registry address2542 S Bascom Ave, Campbell, CA 95008 · Santa Clara CountyPhone(415) 640-1455
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Ryuko Ishikawa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ishikawa practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Ishikawa's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryuko Ishikawa is one of 6,803 psychiatrists in California
Psychiatry is Dr. Ishikawa's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Ishikawa has a license on file in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Psychiatrists near Dr. Ishikawa
Counts of psychiatrists 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. Ryuko Ishikawa wrote 44 Medicare Part D claims in 2019
In 2019, Dr. Ishikawa wrote 44 Medicare Part D claims. They cover 3 drugs, with $34,739 in total drug cost. In 2017, CMS named 225 claims across 12 drugs.
Dr. Ishikawa's most prescribed drugs by claims, 2019
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, 2017 to 2019
- 2017
- 2019
- Claims for drugs CMS names
- 2017: 2252019: 4480%
Drugs named by CMS: 3 in 2019, 12 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Ryuko Ishikawa received $522 in industry payments from 2017 to 2024
CMS Open Payments shows 10 general payments to Dr. Ishikawa from 8 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 85% of the total. Sunovion Pharmaceuticals Inc. paid the most, $247.
General payments to Dr. Ishikawa by program year, 2017 to 2024
General payments to Dr. Ishikawa by kind, 2017 to 2024
- Food and beverage$44585%
- Education$7715%
Companies that paid Dr. Ishikawa the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryuko Ishikawa graduated from Tohoku University Faculty of Medicine
Dr. Ishikawa graduated from Tohoku University Faculty of Medicine in 1962.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Ryuko Ishikawa accepts plans from 6 insurance carriers
Dr. Ishikawa 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, 5. 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
- United Healthcare
Plan types Dr. Ishikawa accepts, by number of carriers
- Medicare5
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ryuko Ishikawa'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Ryuko Ishikawa
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. Ryuko Ishikawa's NPI number?
Dr. Ryuko Ishikawa's NPI number is 1053629634. It was assigned on September 17, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryuko Ishikawa?
Dr. Ryuko Ishikawa is a psychiatrist in Campbell, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Ryuko Ishikawa practice?
Dr. Ishikawa practices at 2542 S Bascom Ave, Campbell, CA 95008.
What is Dr. Ryuko Ishikawa's office phone number?
The practice phone on file for Dr. Ishikawa is (415) 640-1455.
What is Dr. Ryuko Ishikawa's medical license number?
Dr. Ishikawa's California license number on file is A42754.
Where did Dr. Ryuko Ishikawa go to medical school?
Dr. Ishikawa graduated from Tohoku University Faculty of Medicine in 1962.
What drugs does Dr. Ryuko Ishikawa prescribe most?
In 2019 Medicare Part D data, Dr. Ishikawa's most prescribed drugs by claims were Olanzapine, Invega Sustenna and Benztropine Mesylate.
Has Dr. Ryuko Ishikawa received payments from drug or device companies?
CMS Open Payments shows $522 in general payments to Dr. Ishikawa from 8 companies from 2017 to 2024. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Ryuko Ishikawa been practicing?
Dr. Ishikawa graduated from medical school in 1962, 64 years ago.
What insurance does Dr. Ryuko Ishikawa accept?
Dr. Ishikawa 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, 5. Check the plan with the practice before a visit.
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