Dr. Ryan Frederick Holbrook, MD
- Medicare services, 2023
- 64
- Part D claims, 2023
- 18
- Industry payments
- $1,408
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 800 W 5th Ave, Spokane, WA 99204
- Practice phone
- Call (509) 228-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Holbrook'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. Ryan Frederick Holbrook is a surgical oncologist in Spokane, Washington
Dr. Holbrook practices in Spokane, Washington.
Dr. Holbrook's NPI, 1801885520, was assigned on October 14, 2005. Dr. Holbrook graduated from Northwestern University Feinberg Medical School in 1986. Dr. Holbrook holds Washington license MD00032407.
- NPI
- 1801885520NPI Registry (opens in a new tab)
- NPI enumeration date
- October 14, 2005
- NPI status
- Active
- Practice phone
- (509) 228-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Ryan Frederick Holbrook's practice address is in Spokane, Washington
Dr. Holbrook's practice address in the NPI Registry is 800 W 5th Ave, Spokane, WA 99204, in Spokane County. The practice phone is (509) 228-1000.
- NPI Registry address800 W 5th Ave, Spokane, WA 99204 · Spokane CountyPhone(509) 228-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Ryan Frederick Holbrook's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holbrook practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Holbrook's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan Frederick Holbrook is one of 31 surgical oncologists in Washington
Surgical oncology is Dr. Holbrook's primary specialty in the NPI Registry, under taxonomy code 2086X0206X. Dr. Holbrook is licensed in Washington.
Specialties and state licenses
- Surgical oncology, WashingtonPrimary
Surgical oncologists near Dr. Holbrook
Counts of surgical oncologists 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. Ryan Frederick Holbrook billed Medicare for 64 services in 2023
CMS data shows 64 Medicare services from Dr. Holbrook across 3 procedure codes in 2023. Medicare paid $3,002 for them. Every service was in an office.
Dr. Holbrook's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 2032023: 4578%
- Surgery
- 2022: 812023: 1977%
Dr. Holbrook compared with the Washington median for surgical oncologists, 2023
- Dr. Holbrook
- Washington median
- Medicare services
- 64vs 11444% below
- Part D claims
- 18vs 4762% below
Medians across 31 surgical oncologists in Washington with Dmand AI profiles that report each measure.
Dr. Holbrook's most billed Medicare procedure codes, 2023
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. Holbrook and other surgical oncologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan Frederick Holbrook's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Holbrook's median patient age at 69, with 50% women.
Dr. Holbrook'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
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Ryan Frederick Holbrook wrote 18 Medicare Part D claims in 2023
In 2023, Dr. Holbrook wrote 18 Medicare Part D claims. They cover 1 drug, with $151 in total drug cost. In 2022, CMS named 70 claims across 3 drugs.
Dr. Holbrook's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 702023: 1874%
Drugs named by CMS: 1 in 2023, 3 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Ryan Frederick Holbrook received $1,408 in industry payments from 2016 to 2025
CMS Open Payments shows 15 general payments to Dr. Holbrook from 7 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 60% of the total. Medical Device Business Services, Inc. paid the most, $1,014.
General payments to Dr. Holbrook by program year, 2016 to 2025
General payments to Dr. Holbrook by kind, 2016 to 2025
- Travel and lodging$84460%
- Food and beverage$46333%
- Speaker and faculty fees$634%
- Education$383%
Companies that paid Dr. Holbrook 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. Ryan Frederick Holbrook graduated from Northwestern University Feinberg Medical School
Dr. Holbrook graduated from Northwestern University Feinberg Medical School in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan Frederick Holbrook'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 |
| 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) |
| 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. Ryan Frederick Holbrook
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. Ryan Frederick Holbrook's NPI number?
Dr. Ryan Frederick Holbrook's NPI number is 1801885520. It was assigned on October 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Frederick Holbrook?
Dr. Ryan Frederick Holbrook is a surgical oncologist in Spokane, Washington. The primary specialty in the NPI Registry is Surgical Oncology Physician (taxonomy code 2086X0206X).
Where does Dr. Ryan Frederick Holbrook practice?
Dr. Holbrook practices at 800 W 5th Ave, Spokane, WA 99204.
What is Dr. Ryan Frederick Holbrook's office phone number?
The practice phone on file for Dr. Holbrook is (509) 228-1000.
What is Dr. Ryan Frederick Holbrook's medical license number?
Dr. Holbrook holds Washington license MD00032407.
Does Dr. Ryan Frederick Holbrook accept Medicare?
Yes. CMS data shows Dr. Holbrook billed Medicare for 64 services in 2023.
What services does Dr. Ryan Frederick Holbrook bill to Medicare?
In 2023, Dr. Holbrook's most billed Medicare services were office visit, established patient (99213), surgery: heart and blood vessels (36415) and office visit, established patient (99214).
Where did Dr. Ryan Frederick Holbrook go to medical school?
Dr. Holbrook graduated from Northwestern University Feinberg Medical School in 1986.
What drugs does Dr. Ryan Frederick Holbrook prescribe most?
In 2023 Medicare Part D data, Dr. Holbrook's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Ryan Frederick Holbrook received payments from drug or device companies?
CMS Open Payments shows $1,408 in general payments to Dr. Holbrook from 7 companies from 2016 to 2025. The largest total came from Medical Device Business Services, Inc.
How long has Dr. Ryan Frederick Holbrook been practicing?
Dr. Holbrook graduated from medical school in 1986, 40 years ago.
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