Dr. Thomas Harmon Castle Jr., MD
- Medicare services, 2022
- 1,903
- Part D claims, 2021
- 42
- Industry payments
- $526
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 1231 116th Ave Ne Ste 930 Suite 930, Bellevue, WA 98004
- Practice phone
- Call (425) 688-1916
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Proliance Surgeons Orthopedic Specialists Of Seattle - Bellevue (116th Ave NE)
Multi-specialty group site · Bellevue, Washington
Find Dr. Castle's professional email, personal email and mobile number
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Dr. Thomas Harmon Castle Jr. is an orthopedic surgeon in Issaquah, Washington
Dr. Castle practices at Proliance Surgeons Orthopedic Specialists Of Seattle - Bellevue (116th Ave NE) in Bellevue, Washington.
Dr. Castle's NPI, 1881665677, was assigned on January 30, 2006. Dr. Castle graduated from University of Connecticut School of Medicine in 1982. Dr. Castle holds Washington license MD00025341.
- NPI
- 1881665677NPI Registry (opens in a new tab)
- NPI enumeration date
- January 30, 2006
- NPI status
- Active
- Practice phone
- (425) 688-1916
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Harmon Castle Jr. practices in Bellevue and Issaquah
Dr. Castle's primary practice is Proliance Surgeons Orthopedic Specialists of Seattle - Bellevue (116th Ave NE), at 1231 116th Ave Ne Ste 930 Suite 930, Bellevue, WA 98004. The practice phone is (425) 688-1916. The NPI Registry lists Dr. Castle's practice address as 510 8th NE Ave, Issaquah, WA 98029.
- Proliance Surgeons Orthopedic Specialists of Seattle - Bellevue (116th Ave NE)Primary1231 116th Ave Ne Ste 930 Suite 930, Bellevue, WA 98004Phone(425) 688-1916
- NPI Registry address510 8th NE Ave, Issaquah, WA 98029 · King CountyPhone(425) 455-3600
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Thomas Harmon Castle Jr. is affiliated with 1 site of care and 1 medical group
Dr. Castle's primary practice is Proliance Surgeons Orthopedic Specialists Of Seattle - Bellevue (116th Ave NE) in Bellevue, Washington. The medical group on file is Seattle Orthopedic Center.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Thomas Harmon Castle Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castle practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Proliance Surgeons Orthopedic Specialists Of Seattle - Bellevue (116th Ave NE) | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Harmon Castle Jr. is one of 514 orthopedic surgeons in Washington
Orthopaedic surgery is Dr. Castle's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Castle is licensed in Washington.
Specialties and state licenses
- Orthopaedic surgery, WashingtonPrimary
Orthopedic surgeons near Dr. Castle
Counts of orthopedic 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. Thomas Harmon Castle Jr. billed Medicare for 1,903 services in 2022
CMS data shows 1,903 Medicare services from Dr. Castle across 8 procedure codes in 2022. Medicare paid $32,621 for them. Every service was in an office.
Dr. Castle's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Drugs given in the office
- 2021: 3,1982022: 1,53752%
- Office and hospital visits
- 2021: 3482022: 17350%
- Imaging
- 2021: 1942022: 12138%
- Surgery
- 2021: 1362022: 7247%
Dr. Castle compared with the Washington median for orthopedic surgeons, 2022
- Dr. Castle
- Washington median
- Medicare services
- 1,903vs 6702.8 times
- Part D claims
- 42vs 8249% below
Medians across 493 orthopedic surgeons in Washington with Dmand AI profiles that report each measure.
Dr. Castle's most billed Medicare procedure codes, 2022
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. Castle?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Castle and other orthopedic surgeons in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Harmon Castle Jr.'s patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Castle's median patient age at 58, with 48% women.
Dr. Castle's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women48%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. Thomas Harmon Castle Jr. wrote 42 Medicare Part D claims in 2021
In 2021, Dr. Castle wrote 42 Medicare Part D claims. They cover 3 drugs, with $513 in total drug cost. In 2020, CMS named 51 claims across 3 drugs.
Dr. Castle's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 512021: 4218%
Drugs named by CMS: 3 in 2021, 3 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Thomas Harmon Castle Jr. received $526 in industry payments from 2016 to 2019
CMS Open Payments shows 9 general payments to Dr. Castle from 4 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 95% of the total. Zimmer Biomet Holdings, Inc. paid the most, $275.
General payments to Dr. Castle by program year, 2016 to 2019
General payments to Dr. Castle by kind, 2016 to 2019
- Food and beverage$50195%
- Education$255%
Companies that paid Dr. Castle the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Harmon Castle Jr. graduated from University of Connecticut School of Medicine
Dr. Castle graduated from University of Connecticut School of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Harmon Castle Jr.'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Thomas Harmon Castle Jr.
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What is Dr. Thomas Harmon Castle Jr.'s NPI number?
Dr. Thomas Harmon Castle Jr.'s NPI number is 1881665677. It was assigned on January 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Harmon Castle Jr.?
Dr. Thomas Harmon Castle Jr. is an orthopedic surgeon in Issaquah, Washington. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Thomas Harmon Castle Jr. practice?
Dr. Castle practices at 1231 116th Ave Ne Ste 930 Suite 930, Bellevue, WA 98004. Dr. Castle also practices at 510 8th NE Ave, Issaquah, WA 98029. Dr. Castle's primary practice is Proliance Surgeons Orthopedic Specialists Of Seattle - Bellevue (116th Ave NE) in Bellevue, Washington.
What is Dr. Thomas Harmon Castle Jr.'s office phone number?
The practice phone on file for Dr. Castle is (425) 688-1916.
What is Dr. Thomas Harmon Castle Jr.'s medical license number?
Dr. Castle holds Washington license MD00025341.
What medical group is Dr. Thomas Harmon Castle Jr. part of?
Dr. Castle is linked to Seattle Orthopedic Center.
Does Dr. Thomas Harmon Castle Jr. accept Medicare?
Yes. CMS data shows Dr. Castle billed Medicare for 1,903 services in 2022.
What services does Dr. Thomas Harmon Castle Jr. bill to Medicare?
In 2022, Dr. Castle's most billed Medicare services were injected or infused drug (J7325), injected or infused drug (J0702) and office visit, established patient (99213).
Where did Dr. Thomas Harmon Castle Jr. go to medical school?
Dr. Castle graduated from University of Connecticut School of Medicine in 1982.
What drugs does Dr. Thomas Harmon Castle Jr. prescribe most?
In 2021 Medicare Part D data, Dr. Castle's most prescribed drugs by claims were Diclofenac Sodium, Hydrocodone-Acetaminophen and Oxycodone HCl.
Has Dr. Thomas Harmon Castle Jr. received payments from drug or device companies?
CMS Open Payments shows $526 in general payments to Dr. Castle from 4 companies from 2016 to 2019. The largest total came from Zimmer Biomet Holdings, Inc.
How long has Dr. Thomas Harmon Castle Jr. been practicing?
Dr. Castle graduated from medical school in 1982, 44 years ago.
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