Dr. Hiroshi Terashima, MD
- Medicare services, 2021
- 915
- Part D claims, 2022
- 442
- Hospital affiliations
- 1
- Industry payments
- $751
- Medical group
- 1
- Practice address
- 350 Hawthorne Avenue, Oakland, CA 94609
- Practice phone
- Call (510) 655-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Terashima's professional email, personal email and mobile number
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Dr. Hiroshi Terashima is an internist in Oakland, California
Dr. Terashima practices at Alta Bates Summit Medical Center in Oakland, California, part of Sutter Health.
Dr. Terashima's NPI, 1508974924, was assigned on August 27, 2006. Dr. Terashima graduated from David Geffen School of Medicine at UCLA in 1978. Dr. Terashima holds California license G40210.
- NPI
- 1508974924NPI Registry (opens in a new tab)
- NPI enumeration date
- August 27, 2006
- NPI status
- Active
- Practice phone
- (510) 655-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Hiroshi Terashima practices at Alta Bates Summit Medical Center in Oakland, California
Dr. Terashima's primary practice is Alta Bates Summit Medical Center, at 350 Hawthorne Avenue, Oakland, CA 94609 in Alameda County. The practice phone is (510) 655-4000.
- Alta Bates Summit Medical Center350 Hawthorne Avenue, Oakland, CA 94609 · Alameda CountyPhone(510) 655-4000
Source: Dmand AI Affiliation Data
Dr. Hiroshi Terashima is affiliated with 2 sites of care and 1 medical group
Dr. Terashima's primary practice is Alta Bates Summit Medical Center in Oakland, California, part of Sutter Health. Dmand AI also links Dr. Terashima to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hiroshi Terashima's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Terashima practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Alta Bates Summit Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Sutter Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Hiroshi Terashima is one of 16,751 internists in California
Internal medicine is Dr. Terashima's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Terashima is board certified in internal medicine by the American Board of Internal Medicine. Dr. Terashima is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Terashima
Counts of internists 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. Hiroshi Terashima billed Medicare for 915 services in 2021
CMS data shows 915 Medicare services from Dr. Terashima across 10 procedure codes in 2021. Medicare paid $68,500 for them. Every service was in an office.
Dr. Terashima's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 8592021: 63226%
- Other services
- 2020: 3592021: 17352%
- Tests and treatments
- 2020: 2172021: 7964%
- Lab and pathology
- 2020: 152021: 167%
- Surgery
- 2020: 02021: 15
Dr. Terashima compared with the California median for internists, 2021
- Dr. Terashima
- California median
- Medicare services
- 915vs 3612.5 times
- Part D claims
- 442vs 421Close to median
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Terashima's most billed Medicare procedure codes, 2021
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. Terashima and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hiroshi Terashima's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Terashima's median patient age at 69, with 41% women.
Dr. Terashima's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women41%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Hiroshi Terashima wrote 442 Medicare Part D claims in 2022
In 2022, Dr. Terashima wrote 442 Medicare Part D claims. They cover 18 drugs, with $17,356 in total drug cost. In 2021, CMS named 4,594 claims across 99 drugs.
Dr. Terashima's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 4,5942022: 44290%
Drugs named by CMS: 18 in 2022, 99 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Hiroshi Terashima received $751 in industry payments from 2016 to 2021
CMS Open Payments shows 38 general payments to Dr. Terashima from 13 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $137.
General payments to Dr. Terashima by program year, 2016 to 2021
Companies that paid Dr. Terashima the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hiroshi Terashima has 1 award and honors on record
Dmand AI lists 1 award for Dr. Terashima, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Terashima
- 2014
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Hiroshi Terashima graduated from David Geffen School of Medicine at UCLA
Dr. Terashima graduated from David Geffen School of Medicine at UCLA in 1978.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Hiroshi Terashima accepts plans from 5 insurance carriers
Dr. Terashima is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Terashima accepts, by number of carriers
- Medicare5
- PPO5
- HMO2
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Hiroshi Terashima'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| 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. Hiroshi Terashima
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. Hiroshi Terashima's NPI number?
Dr. Hiroshi Terashima's NPI number is 1508974924. It was assigned on August 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Hiroshi Terashima?
Dr. Hiroshi Terashima is an internist in Oakland, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Hiroshi Terashima practice?
Dr. Terashima practices at 350 Hawthorne Avenue, Oakland, CA 94609. Dr. Terashima's primary practice is Alta Bates Summit Medical Center in Oakland, California, part of Sutter Health. Dmand AI also links Dr. Terashima to 1 group practice or clinic and 1 medical group.
What is Dr. Hiroshi Terashima's office phone number?
The practice phone on file for Dr. Terashima is (510) 655-4000.
What is Dr. Hiroshi Terashima's medical license number?
Dr. Terashima holds California license G40210.
Which hospitals is Dr. Hiroshi Terashima affiliated with?
Dr. Terashima practices at Alta Bates Summit Medical Center in Oakland, California.
Does Dr. Hiroshi Terashima accept Medicare?
Yes. CMS data shows Dr. Terashima billed Medicare for 915 services in 2021.
Is Dr. Hiroshi Terashima board certified?
Yes. Dr. Terashima is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Hiroshi Terashima bill to Medicare?
In 2021, Dr. Terashima's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0439).
Where did Dr. Hiroshi Terashima go to medical school?
Dr. Terashima graduated from David Geffen School of Medicine at UCLA in 1978.
Show 4 more questionsShow fewer questions
What drugs does Dr. Hiroshi Terashima prescribe most?
In 2022 Medicare Part D data, Dr. Terashima's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Gabapentin.
Has Dr. Hiroshi Terashima received payments from drug or device companies?
CMS Open Payments shows $751 in general payments to Dr. Terashima from 13 companies from 2016 to 2021. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Hiroshi Terashima been practicing?
Dr. Terashima graduated from medical school in 1978, 48 years ago.
What insurance does Dr. Hiroshi Terashima accept?
Dr. Terashima is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Elevance 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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