Dr. Brian I. Watanabe, MD
- Medicare services, 2024
- 289
- Medicare patients, 2024
- 40
- Industry payments
- $261
- Affiliated sites
- 1
- Insurance carriers
- 7
- Practice address
- 645 S Beach Blvd, Anaheim, CA 92804
- Practice phone
- Call (714) 821-1993
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
West Anaheim Extended Care
Anaheim, California
Find Dr. Watanabe'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. Brian I. Watanabe is a vascular surgeon in Anaheim, California
Dr. Watanabe practices at West Anaheim Extended Care in Anaheim, California.
Dr. Watanabe's NPI, 1831262203, was assigned on November 15, 2006. Dr. Watanabe graduated from John A. Burns School of Medicine in 1985. Dr. Watanabe holds California license G83423.
- NPI
- 1831262203NPI Registry (opens in a new tab)
- NPI enumeration date
- November 15, 2006
- NPI status
- Active
- Practice phone
- (714) 821-1993
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Brian I. Watanabe practices at West Anaheim Extended Care in Anaheim, California
Dr. Watanabe's primary practice is West Anaheim Extended Care, at 645 S Beach Blvd, Anaheim, CA 92804 in Orange County. The practice phone is (714) 821-1993.
- West Anaheim Extended Care645 S Beach Blvd, Anaheim, CA 92804 · Orange CountyPhone(714) 821-1993
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Brian I. Watanabe is affiliated with 2 sites of care
Dr. Watanabe's primary practice is West Anaheim Extended Care in Anaheim, California. Dmand AI also links Dr. Watanabe to 1 physician office, 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. Brian I. Watanabe's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Watanabe practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| West Anaheim Extended Care | 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. Brian I. Watanabe is one of 532 vascular surgeons in California
Vascular surgery is Dr. Watanabe's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Watanabe is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Watanabe's licenses on file in 4 states: California, Hawaii, New Jersey and New York.
Specialties and state licenses
- Vascular surgery, CaliforniaPrimary
- Hawaii license
- New Jersey license
- New York license
Vascular surgeons near Dr. Watanabe
Counts of vascular 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. Brian I. Watanabe billed Medicare for 289 services in 2024
CMS data shows 289 Medicare services from Dr. Watanabe across 3 procedure codes in 2024, for 40 Medicare patients. Medicare paid $18,489 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Watanabe's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3022024: 2894%
Dr. Watanabe compared with the California median for vascular surgeons, 2024
- Dr. Watanabe
- California median
- Medicare services
- 289vs 60953% below
- Medicare patients
- 40vs 27285% below
Medians across 499 vascular surgeons in California with Dmand AI profiles that report each measure.
Dr. Watanabe'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.
Need commercial claims for Dr. Watanabe?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Watanabe and other vascular surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian I. Watanabe treated 40 Medicare patients in 2024, average age 79
CMS counts 40 Medicare patients who saw Dr. Watanabe in 2024. The largest group is 75 to 84, with 16 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Watanabe's median patient age at 78, with 47% women.
Dr. Watanabe's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Watanabe's Medicare patients by sex, 2024
- Women2460%
- Men1640%
Chronic conditions among Dr. Watanabe's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders75%
- Chronic kidney disease68%
- Depression63%
- Diabetes63%
- Heart failure58%
- Arthritis55%
Share of Medicare patients with each condition. A patient can have several.
Dr. Watanabe's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
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Dr. Brian I. Watanabe received $261 in industry payments from 2017 to 2024
CMS Open Payments shows 7 general payments to Dr. Watanabe from 5 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. W. L. Gore & Associates, Inc. paid the most, $186.
General payments to Dr. Watanabe by program year, 2017 to 2024
Companies that paid Dr. Watanabe 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. Brian I. Watanabe graduated from John A. Burns School of Medicine
Dr. Watanabe graduated from John A. Burns School of Medicine in 1985.
- Medical school
- Board certified in surgery
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Brian I. Watanabe accepts plans from 7 insurance carriers
Dr. Watanabe is in network with 7 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- LA Care
- Regence Health Plans
- Molina
Plan types Dr. Watanabe accepts, by number of carriers
- Medicare7
- PPO5
- HMO3
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Brian I. Watanabe'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) |
| 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. Brian I. Watanabe
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. Brian I. Watanabe's NPI number?
Dr. Brian I. Watanabe's NPI number is 1831262203. It was assigned on November 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian I. Watanabe?
Dr. Brian I. Watanabe is a vascular surgeon in Anaheim, California. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Brian I. Watanabe practice?
Dr. Watanabe practices at 645 S Beach Blvd, Anaheim, CA 92804. Dr. Watanabe's primary practice is West Anaheim Extended Care in Anaheim, California. Dmand AI also links Dr. Watanabe to 1 physician office.
What is Dr. Brian I. Watanabe's office phone number?
The practice phone on file for Dr. Watanabe is (714) 821-1993.
What is Dr. Brian I. Watanabe's medical license number?
Dr. Watanabe holds California license G83423, one of the licenses on file in 4 states.
Which states has Dr. Brian I. Watanabe been licensed in?
Dmand AI has state licenses on file for Dr. Watanabe in California (1996 to 2026), Hawaii (1991 to 2018), New Jersey (1988 to 2009) and New York (1993 to 2008).
Does Dr. Brian I. Watanabe accept Medicare?
Yes. CMS data shows Dr. Watanabe billed Medicare for 289 services in 2024.
How many Medicare patients does Dr. Brian I. Watanabe see?
CMS counts 40 Medicare patients who saw Dr. Watanabe in 2024, with an average age of 79.
Is Dr. Brian I. Watanabe board certified?
Yes. Dr. Watanabe is board certified in surgery by the American Board of Surgery.
What services does Dr. Brian I. Watanabe bill to Medicare?
In 2024, Dr. Watanabe's most billed Medicare services were nursing facility care (99308), nursing facility care (99305) and nursing facility care (99307).
Show 4 more questionsShow fewer questions
Where did Dr. Brian I. Watanabe go to medical school?
Dr. Watanabe graduated from John A. Burns School of Medicine in 1985.
Has Dr. Brian I. Watanabe received payments from drug or device companies?
CMS Open Payments shows $261 in general payments to Dr. Watanabe from 5 companies from 2017 to 2024. The largest total came from W. L. Gore & Associates, Inc.
How long has Dr. Brian I. Watanabe been practicing?
Dr. Watanabe graduated from medical school in 1985, 41 years ago.
What insurance does Dr. Brian I. Watanabe accept?
Dr. Watanabe is in network with 7 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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