Dr. Charles W. Hollen, MD
- Medicare services, 2023
- 27,704
- Part D claims, 2024
- 90
- Hospital affiliations
- 1
- Industry payments
- $12,886
- State license
- 1
- Practice address
- 3401 West Gore Blvd, Lawton, OK 73505
- Practice phone
- Call (580) 355-8620
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Hollen's professional email, personal email and mobile number
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Dr. Charles W. Hollen is a hematologist and oncologist in Lawton, Oklahoma
Dr. Hollen practices at Memorial Health System of Southwest Oklahoma in Lawton, Oklahoma, part of Memorial Health System of Southwest Oklahoma.
Dr. Hollen's NPI, 1205855723, was assigned on July 18, 2006. Dr. Hollen graduated from University of Oklahoma College of Medicine in 1985. Dr. Hollen holds Oklahoma license 15779.
- NPI
- 1205855723NPI Registry (opens in a new tab)
- NPI enumeration date
- July 18, 2006
- NPI status
- Active
- Practice phone
- (580) 355-8620
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Charles W. Hollen practices at Memorial Health System of Southwest Oklahoma in Lawton, Oklahoma
Dr. Hollen's primary practice is Memorial Health System of Southwest Oklahoma, at 3401 West Gore Blvd, Lawton, OK 73505 in Comanche County. The practice phone is (580) 355-8620.
- Memorial Health System of Southwest Oklahoma3401 West Gore Blvd, Lawton, OK 73505 · Comanche CountyPhone(580) 355-8620
Source: Dmand AI Affiliation Data
Dr. Charles W. Hollen is affiliated with 2 sites of care
Dr. Hollen's primary practice is Memorial Health System of Southwest Oklahoma in Lawton, Oklahoma, part of Memorial Health System of Southwest Oklahoma. Dmand AI also links Dr. Hollen to 1 community health center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Charles W. Hollen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hollen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Health System of Southwest Oklahoma | Available with a free account |
| +1 more affiliated site | 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 Memorial Health System of Southwest Oklahoma and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Charles W. Hollen is one of 134 hematologists and oncologists in Oklahoma
Hematology and oncology is Dr. Hollen's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Hollen is licensed in Oklahoma.
Specialties and state licenses
- Hematology and oncology, OklahomaPrimary
Hematologists and oncologists near Dr. Hollen
Counts of hematologists and 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. Charles W. Hollen billed Medicare for 27,704 services in 2023
CMS data shows 27,704 Medicare services from Dr. Hollen across 34 procedure codes in 2023. Medicare paid $522,084 for them. Every service was in an office.
Dr. Hollen's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Other services
- 2022: 11,1132023: 21,86497%
- Drugs given in the office
- 2022: 40,3932023: 3,48191%
- Tests and treatments
- 2022: 1,2122023: 1,2624%
- Office and hospital visits
- 2022: 8172023: 7538%
- Imaging
- 2022: 4912023: 27344%
- Surgery
- 2022: 682023: 714%
Dr. Hollen compared with the Oklahoma median for hematologists and oncologists, 2023
- Dr. Hollen
- Oklahoma median
- Medicare services
- 27,704vs 1,21822.7 times
- Part D claims
- 29vs 82796% below
Medians across 124 hematologists and oncologists in Oklahoma with Dmand AI profiles that report each measure.
Dr. Hollen'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.
Need commercial claims for Dr. Hollen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hollen and other hematologists and oncologists in Oklahoma.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles W. Hollen's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Hollen's median patient age at 71, with 67% women.
Dr. Hollen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Charles W. Hollen wrote 90 Medicare Part D claims in 2024
In 2024, Dr. Hollen wrote 90 Medicare Part D claims for 38 patients. 88% of them were for generic drugs. CMS names the drug for 29 of them, across 2 drugs with 11 or more claims each, at $602 in total drug cost. In 2023, CMS named 719 claims across 27 drugs.
Dr. Hollen's Part D claims by kind of drug, 2024
- Generic79 claims88%
- Brand-name11 claims12%
Dr. Hollen'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7192024: 2996%
Drugs named by CMS: 2 in 2024, 27 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
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Dr. Charles W. Hollen received $12,886 in industry payments from 2016 to 2024
CMS Open Payments shows 650 general payments to Dr. Hollen from 53 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 78% of the total. Novartis Pharmaceuticals Corporation paid the most, $2,329.
General payments to Dr. Hollen by program year, 2016 to 2024
General payments to Dr. Hollen by kind, 2016 to 2024
- Food and beverage$10,04178%
- Education$1,83014%
- Device or supply loans$1,0158%
Companies that paid Dr. Hollen the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Charles W. Hollen graduated from University of Oklahoma College of Medicine
Dr. Hollen graduated from University of Oklahoma College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles W. Hollen'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 Data |
| 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) |
| 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. Charles W. Hollen
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. Charles W. Hollen's NPI number?
Dr. Charles W. Hollen's NPI number is 1205855723. It was assigned on July 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles W. Hollen?
Dr. Charles W. Hollen is a hematologist and oncologist in Lawton, Oklahoma. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Charles W. Hollen practice?
Dr. Hollen practices at 3401 West Gore Blvd, Lawton, OK 73505. Dr. Hollen's primary practice is Memorial Health System of Southwest Oklahoma in Lawton, Oklahoma, part of Memorial Health System of Southwest Oklahoma. Dmand AI also links Dr. Hollen to 1 community health center.
What is Dr. Charles W. Hollen's office phone number?
The practice phone on file for Dr. Hollen is (580) 355-8620.
What is Dr. Charles W. Hollen's medical license number?
Dr. Hollen holds Oklahoma license 15779.
Which hospitals is Dr. Charles W. Hollen affiliated with?
Dr. Hollen practices at Memorial Health System of Southwest Oklahoma in Lawton, Oklahoma.
Does Dr. Charles W. Hollen accept Medicare?
Yes. CMS data shows Dr. Hollen billed Medicare for 27,704 services in 2023.
What services does Dr. Charles W. Hollen bill to Medicare?
In 2023, Dr. Hollen's most billed Medicare services were medicare temporary code (Q0138), medicare temporary code (Q9967) and injected or infused drug (J1100).
Where did Dr. Charles W. Hollen go to medical school?
Dr. Hollen graduated from University of Oklahoma College of Medicine in 1985.
What drugs does Dr. Charles W. Hollen prescribe most?
In 2024 Medicare Part D data, Dr. Hollen's most prescribed drugs by claims were Letrozole and Citalopram HBr.
Has Dr. Charles W. Hollen received payments from drug or device companies?
CMS Open Payments shows $12,886 in general payments to Dr. Hollen from 53 companies from 2016 to 2024. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Charles W. Hollen been practicing?
Dr. Hollen graduated from medical school in 1985, 41 years ago.
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