Dr. Michael K. Castellarin, MD
- Medicare services, 2022
- 74
- Part D claims, 2021
- 20
- Publications
- 1
- Industry payments
- $18
- State license
- 1
- Practice address
- 1055 N Clermont St, Denver, CO 80220
- Practice phone
- Call (913) 578-4409
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
VA Medical Center
Denver, Colorado
Find Dr. Castellarin's professional email, personal email and mobile number
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Dr. Michael K. Castellarin is a hospitalist in Denver, Colorado
Dr. Castellarin practices at VA Medical Center in Denver, Colorado.
Dr. Castellarin's NPI, 1467807610, was assigned on April 25, 2016. Dr. Castellarin graduated from University of Tennessee, Hsc, College of Medicine in 2016. Dr. Castellarin holds Colorado license DR.0066634.
- NPI
- 1467807610NPI Registry (opens in a new tab)
- NPI enumeration date
- April 25, 2016
- NPI status
- Active
- Practice phone
- (913) 578-4409
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Michael K. Castellarin practices at VA Medical Center in Denver, Colorado
Dr. Castellarin's primary practice is VA Medical Center, at 1055 N Clermont St, Denver, CO 80220 in Denver County. The practice phone is (913) 578-4409.
- VA Medical Center1055 N Clermont St, Denver, CO 80220 · Denver CountyPhone(913) 578-4409
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael K. Castellarin is affiliated with 1 site of care
Dr. Castellarin's primary practice is VA Medical Center in Denver, Colorado.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Michael K. Castellarin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castellarin practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| VA Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael K. Castellarin is one of 758 hospitalists in Colorado
Hospitalist is Dr. Castellarin's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Castellarin is licensed in Colorado.
Specialties and state licenses
- Hospitalist, ColoradoPrimary
Hospitalists near Dr. Castellarin
Counts of hospitalists 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. Michael K. Castellarin billed Medicare for 74 services in 2022
CMS data shows 74 Medicare services from Dr. Castellarin across 3 procedure codes in 2022. Medicare paid $4,794 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Castellarin's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1252022: 7441%
Dr. Castellarin compared with the Colorado median for hospitalists, 2022
- Dr. Castellarin
- Colorado median
- Medicare services
- 74vs 28474% below
- Part D claims
- 20vs 4151% below
Medians across 646 hospitalists in Colorado with Dmand AI profiles that report each measure.
Dr. Castellarin'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Castellarin and other hospitalists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael K. Castellarin's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Castellarin's median patient age at 67, with 8% women.
Dr. Castellarin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women8%
- Men92%
Source: Dmand AI Patient Panel Data
Dr. Michael K. Castellarin wrote 20 Medicare Part D claims in 2021
In 2021, Dr. Castellarin wrote 20 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $292 in total drug cost. In 2020, CMS named 54 claims across 3 drugs.
Dr. Castellarin'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: 542021: 2063%
Drugs named by CMS: 1 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. Michael K. Castellarin has 1 publication on record
Dmand AI links 1 paper to Dr. Castellarin in 2024. Dr. Castellarin's most frequent co-authors are Erin Linn Bredenberg, MD, Sarah C. Mann, MD and Gregory J. Misky, MD.
Dr. Castellarin's most frequent co-authors
- Erin Linn Bredenberg, MD1 shared paper
- Sarah C. Mann, MD1 shared paper
- Gregory J. Misky, MD1 shared paper
Recent publications by Dr. Castellarin
See who Dr. Castellarin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Castellarin works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Michael K. Castellarin received $18 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Castellarin from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Daiichi Sankyo Inc. paid the most, $18.
Companies that paid Dr. Castellarin the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael K. Castellarin graduated from University of Tennessee, Hsc, College of Medicine
Dr. Castellarin graduated from University of Tennessee, Hsc, College of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael K. Castellarin'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Michael K. Castellarin
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. Michael K. Castellarin's NPI number?
Dr. Michael K. Castellarin's NPI number is 1467807610. It was assigned on April 25, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael K. Castellarin?
Dr. Michael K. Castellarin is a hospitalist in Denver, Colorado. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Michael K. Castellarin practice?
Dr. Castellarin practices at 1055 N Clermont St, Denver, CO 80220. Dr. Castellarin's primary practice is VA Medical Center in Denver, Colorado.
What is Dr. Michael K. Castellarin's office phone number?
The practice phone on file for Dr. Castellarin is (913) 578-4409.
What is Dr. Michael K. Castellarin's medical license number?
Dr. Castellarin holds Colorado license DR.0066634.
Does Dr. Michael K. Castellarin accept Medicare?
Yes. CMS data shows Dr. Castellarin billed Medicare for 74 services in 2022.
What services does Dr. Michael K. Castellarin bill to Medicare?
In 2022, Dr. Castellarin's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99238).
Where did Dr. Michael K. Castellarin go to medical school?
Dr. Castellarin graduated from University of Tennessee, Hsc, College of Medicine in 2016.
What drugs does Dr. Michael K. Castellarin prescribe most?
In 2021 Medicare Part D data, Dr. Castellarin's most prescribed drugs by claims were Atorvastatin Calcium.
Has Dr. Michael K. Castellarin received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Castellarin from 1 company from 2017 to 2017. The largest total came from Daiichi Sankyo Inc.
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How long has Dr. Michael K. Castellarin been practicing?
Dr. Castellarin graduated from medical school in 2016, 10 years ago.
Does Dr. Michael K. Castellarin do research?
Dmand AI links 1 publication to Dr. Castellarin.
Who does Dr. Michael K. Castellarin publish with?
Dr. Castellarin's most frequent co-authors are Erin Linn Bredenberg, MD (1 shared paper), Sarah C. Mann, MD (1 shared paper) and Gregory J. Misky, MD (1 shared paper).
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