Dr. Garland A. Castaneda, MD
- Medicare services, 2024
- 319
- Medicare patients, 2024
- 100
- Part D claims, 2024
- 211
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 400 S 43rd St, Renton, WA 98055
- Practice phone
- Call (425) 228-3450
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Castaneda's professional email, personal email and mobile number
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Dr. Garland A. Castaneda is an internist in Renton, Washington
Dr. Castaneda practices at Valley Medical Center in Renton, Washington, part of University of Washington.
Dr. Castaneda's NPI, 1740676881, was assigned on April 14, 2015. Dr. Castaneda graduated from University of Colorado School of Medicine, Aurora in 2015. Dr. Castaneda holds California license A147493.
- NPI
- 1740676881NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527392018
- NPI enumeration date
- April 14, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (425) 228-3450
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Garland A. Castaneda practices at Valley Medical Center in Renton, Washington
Dr. Castaneda's primary practice is Valley Medical Center, at 400 S 43rd St, Renton, WA 98055 in King County. The practice phone is (425) 228-3450.
- Valley Medical Center400 S 43rd St, Renton, WA 98055 · King CountyPhone(425) 228-3450
Source: Dmand AI Affiliation Data
Dr. Garland A. Castaneda is affiliated with 1 site of care and 1 medical group
Dr. Castaneda's primary practice is Valley Medical Center in Renton, Washington, part of University of Washington. The medical group on file is Valley Medical Center & Clinics.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Garland A. Castaneda's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castaneda practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Valley Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Garland A. Castaneda is one of 2,689 internists in Washington
Internal medicine is Dr. Castaneda's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Castaneda is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Castaneda
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. Garland A. Castaneda billed Medicare for 319 services in 2024
CMS data shows 319 Medicare services from Dr. Castaneda across 5 procedure codes in 2024, for 100 Medicare patients. Medicare paid $31,058 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Castaneda's Medicare services by type, 2022 to 2024
- 2022
- 2024
- Office and hospital visits
- 2022: 7862024: 31959%
Dr. Castaneda compared with the Washington median for internists, 2024
- Dr. Castaneda
- Washington median
- Medicare services
- 319vs 36412% below
- Medicare patients
- 100vs 16539% below
- Part D claims
- 12vs 18293% below
Medians across 2,604 internists in Washington with Dmand AI profiles that report each measure.
Dr. Castaneda'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Garland A. Castaneda treated 100 Medicare patients in 2024, average age 77
CMS counts 100 Medicare patients who saw Dr. Castaneda in 2024. The largest group is 75 to 84, with 34 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 2.45, 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. Castaneda's median patient age at 75, with 54% women.
Dr. Castaneda's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Castaneda's Medicare patients by sex, 2024
- Women5050%
- Men5050%
Chronic conditions among Dr. Castaneda's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Chronic kidney disease48%
- Heart failure46%
- Diabetes42%
- Atrial fibrillation38%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Castaneda's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Garland A. Castaneda wrote 211 Medicare Part D claims in 2024
In 2024, Dr. Castaneda wrote 211 Medicare Part D claims for 83 patients. 85% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $54 in total drug cost. In 2022, CMS named 52 claims across 4 drugs.
Dr. Castaneda's Part D claims by kind of drug, 2024
- Generic179 claims85%
- Brand-name and other32 claims15%
Dr. Castaneda's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Castaneda's Part D claims, 2024
- Opioids6%12 of 211 claims
- Antibiotics15%32 of 211 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 522024: 1277%
Drugs named by CMS: 1 in 2024, 4 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Garland A. Castaneda takes part in Medicare
Dr. Castaneda accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Garland A. Castaneda graduated from University of Colorado School of Medicine, Aurora
Dr. Castaneda graduated from University of Colorado School of Medicine, Aurora in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Garland A. Castaneda'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Garland A. Castaneda
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. Garland A. Castaneda's NPI number?
Dr. Garland A. Castaneda's NPI number is 1740676881. It was assigned on April 14, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Garland A. Castaneda?
Dr. Garland A. Castaneda is an internist in Renton, Washington. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Garland A. Castaneda practice?
Dr. Castaneda practices at 400 S 43rd St, Renton, WA 98055. Dr. Castaneda's primary practice is Valley Medical Center in Renton, Washington, part of University of Washington.
What is Dr. Garland A. Castaneda's office phone number?
The practice phone on file for Dr. Castaneda is (425) 228-3450.
What is Dr. Garland A. Castaneda's medical license number?
Dr. Castaneda holds California license A147493.
Which hospitals is Dr. Garland A. Castaneda affiliated with?
Dr. Castaneda practices at Valley Medical Center in Renton, Washington.
What medical group is Dr. Garland A. Castaneda part of?
Dr. Castaneda is linked to Valley Medical Center & Clinics.
Does Dr. Garland A. Castaneda accept Medicare?
Yes. CMS data shows Dr. Castaneda billed Medicare for 319 services in 2024, and Dr. Castaneda accepts Medicare assignment.
How many Medicare patients does Dr. Garland A. Castaneda see?
CMS counts 100 Medicare patients who saw Dr. Castaneda in 2024, with an average age of 77.
What services does Dr. Garland A. Castaneda bill to Medicare?
In 2024, Dr. Castaneda's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
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Where did Dr. Garland A. Castaneda go to medical school?
Dr. Castaneda graduated from University of Colorado School of Medicine, Aurora in 2015.
What drugs does Dr. Garland A. Castaneda prescribe most?
In 2024 Medicare Part D data, Dr. Castaneda's most prescribed drugs by claims were Amlodipine Besylate.
How long has Dr. Garland A. Castaneda been practicing?
Dr. Castaneda graduated from medical school in 2015, 11 years ago.
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