Wilhelm Leonard Castellon
- Medicare services, 2024
- 544
- Medicare patients, 2024
- 223
- Part D claims, 2024
- 203
- Hospital affiliations
- 1
- Industry payments
- $703
- Practice address
- 272 Hospital Road, Chillicothe, OH 45601
- Practice phone
- Call (740) 779-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Wilhelm Castellon'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.
Wilhelm Leonard Castellon is an internist in Chillicothe, Ohio
Wilhelm Castellon practices at Adena Regional Medical Center in Chillicothe, Ohio, part of Adena Health System.
Wilhelm Castellon's NPI, 1821471327, was assigned on July 1, 2015. Wilhelm Castellon graduated from Lake Erie College of Osteopathic Medicine, Erie in 2014. Wilhelm Castellon holds Texas license U2802.
- NPI
- 1821471327NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527325372
- NPI enumeration date
- July 1, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (740) 779-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Wilhelm Leonard Castellon practices at Adena Regional Medical Center in Chillicothe, Ohio
Wilhelm Castellon's primary practice is Adena Regional Medical Center, at 272 Hospital Road, Chillicothe, OH 45601 in Ross County. The practice phone is (740) 779-7500.
- Adena Regional Medical Center272 Hospital Road, Chillicothe, OH 45601 · Ross CountyPhone(740) 779-7500
Source: Dmand AI Affiliation Data
Wilhelm Leonard Castellon is affiliated with 3 sites of care and 6 medical groups
Wilhelm Castellon's primary practice is Adena Regional Medical Center in Chillicothe, Ohio, part of Adena Health System. The medical group on file is Sound Physicians. Dmand AI also links Wilhelm Castellon to 5 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Wilhelm Leonard Castellon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Wilhelm Castellon practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adena Regional Medical Center | Available with a free account |
| +2 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Adena Health System and 6.2K+ hospitals, with verified contacts in the same login.
Wilhelm Leonard Castellon is one of 4,708 internists in Ohio
Internal medicine is Wilhelm Castellon's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Wilhelm Castellon's licenses on file in 2 states: Texas and Pennsylvania.
Specialties and state licenses
- Internal medicine, TexasPrimary
- Family medicine, Pennsylvania
Internists near Wilhelm Castellon
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
Wilhelm Leonard Castellon billed Medicare for 544 services in 2024
CMS data shows 544 Medicare services from Wilhelm Castellon across 5 procedure codes in 2024, for 223 Medicare patients. Medicare paid $48,519 for them. Every service was in a facility, such as a hospital, rather than an office.
Wilhelm Castellon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3982024: 54437%
Wilhelm Castellon compared with the Ohio median for internists, 2024
- Wilhelm Castellon
- Ohio median
- Medicare services
- 544vs 48712% above
- Medicare patients
- 223vs 19216% above
- Part D claims
- 98vs 29467% below
Medians across 4,703 internists in Ohio with Dmand AI profiles that report each measure.
Wilhelm Castellon'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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Medicare shows one payer. Book a meeting to get commercial claims data for Wilhelm Castellon and other internists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Wilhelm Leonard Castellon treated 223 Medicare patients in 2024, average age 76
CMS counts 223 Medicare patients who saw Wilhelm Castellon in 2024. The largest group is 75 to 84, with 70 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.91, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Wilhelm Castellon's median patient age at 76, with 66% women.
Wilhelm Castellon's Medicare patients by age, 2024
Wilhelm Castellon's Medicare patients by sex, 2024
- Women12154%
- Men10246%
Chronic conditions among Wilhelm Castellon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes44%
- Heart failure44%
- Ischemic heart disease44%
- Chronic kidney disease43%
- Anxiety40%
Share of Medicare patients with each condition. A patient can have several.
Wilhelm Castellon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women66%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Wilhelm Leonard Castellon wrote 203 Medicare Part D claims in 2024
In 2024, Wilhelm Castellon wrote 203 Medicare Part D claims for 123 patients. 94% of them were for generic drugs. CMS names the drug for 98 of them, across 5 drugs with 11 or more claims each, at $616 in total drug cost. In 2023, CMS named 167 claims across 9 drugs.
Wilhelm Castellon's Part D claims by kind of drug, 2024
- Generic191 claims94%
- Brand-name12 claims6%
Wilhelm Castellon'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 Wilhelm Castellon's Part D claims, 2024
- Antibiotics49%99 of 203 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1672024: 9841%
Drugs named by CMS: 5 in 2024, 9 in 2023.
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 Wilhelm Leonard Castellon takes part in Medicare
Wilhelm Castellon 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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Wilhelm Leonard Castellon received $703 in industry payments from 2016 to 2023
CMS Open Payments shows 22 general payments to Wilhelm Castellon from 7 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $236.
General payments to Wilhelm Castellon by program year, 2016 to 2023
Companies that paid Wilhelm Castellon the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Wilhelm Leonard Castellon graduated from Lake Erie College of Osteopathic Medicine, Erie
Wilhelm Castellon graduated from Lake Erie College of Osteopathic Medicine, Erie in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Wilhelm Leonard Castellon'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) |
| 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 Wilhelm Leonard Castellon
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Wilhelm Leonard Castellon's NPI number?
Wilhelm Leonard Castellon's NPI number is 1821471327. It was assigned on July 1, 2015, and it is active in the NPI Registry.
What does Wilhelm Leonard Castellon specialize in?
Wilhelm Leonard Castellon is an internist in Chillicothe, Ohio. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Wilhelm Leonard Castellon practice?
Wilhelm Castellon practices at 272 Hospital Road, Chillicothe, OH 45601. Wilhelm Castellon's primary practice is Adena Regional Medical Center in Chillicothe, Ohio, part of Adena Health System. Dmand AI also links Wilhelm Castellon to 5 medical groups and 2 group practices and clinics.
What is Wilhelm Leonard Castellon's office phone number?
The practice phone on file for Wilhelm Castellon is (740) 779-7500.
What is Wilhelm Leonard Castellon's medical license number?
Wilhelm Castellon holds Texas license U2802, one of the licenses on file in 2 states.
Which states has Wilhelm Leonard Castellon been licensed in?
Dmand AI has state licenses on file for Wilhelm Castellon in Texas and Pennsylvania.
Which hospitals is Wilhelm Leonard Castellon affiliated with?
Wilhelm Castellon practices at Adena Regional Medical Center in Chillicothe, Ohio.
What medical group is Wilhelm Leonard Castellon part of?
Wilhelm Castellon is linked to Sound Physicians. Dmand AI links Wilhelm Castellon to 5 more medical groups.
Does Wilhelm Leonard Castellon accept Medicare?
Yes. CMS data shows Wilhelm Castellon billed Medicare for 544 services in 2024, and Wilhelm Castellon accepts Medicare assignment.
How many Medicare patients does Wilhelm Leonard Castellon see?
CMS counts 223 Medicare patients who saw Wilhelm Castellon in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Wilhelm Leonard Castellon bill to Medicare?
In 2024, Wilhelm Castellon's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Wilhelm Leonard Castellon go to medical school?
Wilhelm Castellon graduated from Lake Erie College of Osteopathic Medicine, Erie in 2014.
What drugs does Wilhelm Leonard Castellon prescribe most?
In 2024 Medicare Part D data, Wilhelm Castellon's most prescribed drugs by claims were Cefdinir, Prednisone and Doxycycline Hyclate.
Has Wilhelm Leonard Castellon received payments from drug or device companies?
CMS Open Payments shows $703 in general payments to Wilhelm Castellon from 7 companies from 2016 to 2023. The largest total came from Pfizer Inc.
How long has Wilhelm Leonard Castellon been practicing?
Wilhelm Castellon graduated from medical school in 2014, 12 years ago.
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