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Dr. Stephen Claude Tanaka, MD
NPI1790863553
- Part D claims, 2018
- 38
- Publications
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 3553 Whipple Road, Union City, CA 95487-1507
- Practice phone
- Call (510) 454-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
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Dr. Stephen Claude Tanaka is an ophthalmologist in Union City, California
Dr. Tanaka practices in Union City, California.
Dr. Tanaka's NPI, 1790863553, was assigned on November 1, 2006. Dr. Tanaka graduated from UCSF School of Medicine in 1981. Dr. Tanaka's California license number on file is G48300.
NPI and contact details
- NPI
- 1790863553NPI Registry (opens in a new tab)
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Practice phone
- (510) 454-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Stephen Claude Tanaka's practice address is in Union City, California
Dr. Tanaka's practice address in the NPI Registry is 3553 Whipple Road, Union City, CA 95487-1507. The practice phone is (510) 454-1000.
- NPI Registry address3553 Whipple Road, Union City, CA 95487-1507Phone(510) 454-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Stephen Claude Tanaka's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tanaka practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Tanaka's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen Claude Tanaka is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Tanaka's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Tanaka is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Tanaka has a license on file in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Ophthalmologists near Dr. Tanaka
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
2,621ophthalmologists in California
3ophthalmologists in Union City
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephen Claude Tanaka wrote 38 Medicare Part D claims in 2018
In 2018, Dr. Tanaka wrote 38 Medicare Part D claims. They cover 2 drugs, with $922 in total drug cost. In 2017, CMS named 195 claims across 5 drugs.
Part D claims, 201838
Drugs named by CMS2
Total drug cost$922
Dr. Tanaka's most prescribed drugs by claims, 2018
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 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 1952018: 3881%
Drugs named by CMS: 2 in 2018, 5 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Stephen Claude Tanaka has 1 publication on record
Dmand AI links 1 paper to Dr. Tanaka. Dr. Tanaka's most frequent co-authors are James Michael Lahey, MD and Jeffrey Mark Lehmer, MD.
Papers1
Dr. Tanaka's most frequent co-authors
Recent publications by Dr. Tanaka
See who Dr. Tanaka researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tanaka works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephen Claude Tanaka graduated from UCSF School of Medicine
Dr. Tanaka graduated from UCSF School of Medicine in 1981.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen Claude Tanaka'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Stephen Claude Tanaka
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. Stephen Claude Tanaka's NPI number?
Dr. Stephen Claude Tanaka's NPI number is 1790863553. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen Claude Tanaka?
Dr. Stephen Claude Tanaka is an ophthalmologist in Union City, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Stephen Claude Tanaka practice?
Dr. Tanaka practices at 3553 Whipple Road, Union City, CA 95487-1507.
What is Dr. Stephen Claude Tanaka's office phone number?
The practice phone on file for Dr. Tanaka is (510) 454-1000.
What is Dr. Stephen Claude Tanaka's medical license number?
Dr. Tanaka's California license number on file is G48300.
Is Dr. Stephen Claude Tanaka board certified?
Yes. Dr. Tanaka is board certified in ophthalmology by the American Board of Ophthalmology.
Where did Dr. Stephen Claude Tanaka go to medical school?
Dr. Tanaka graduated from UCSF School of Medicine in 1981.
What drugs does Dr. Stephen Claude Tanaka prescribe most?
In 2018 Medicare Part D data, Dr. Tanaka's most prescribed drugs by claims were Latanoprost and Dorzolamide-Timolol.
How long has Dr. Stephen Claude Tanaka been practicing?
Dr. Tanaka graduated from medical school in 1981, 45 years ago.
Does Dr. Stephen Claude Tanaka do research?
Dmand AI links 1 publication to Dr. Tanaka.
Who does Dr. Stephen Claude Tanaka publish with?
Dr. Tanaka's most frequent co-authors are James Michael Lahey, MD (1 shared paper) and Jeffrey Mark Lehmer, MD (1 shared paper).
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