Charles W. Hollen, M.D.
Hematology & Oncology Physician · Oklahoma City, OK
Charles W. Hollen, M.D. is a hematology & oncology physician with a practice address in Oklahoma City, Oklahoma, and NPI 1205855723, issued on Jul 18, 2006. Check the license (Oklahoma 15779, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Charles W. Hollen
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 15779 OK
Self-reported in NPPES; status is on the state search - Practice location
- 3525 NW 56TH St, Oklahoma City, OK 73112
- Phone
- (405) 942-9200
- Enumerated
- Jul 18, 2006
- Record last updated
- Dec 4, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (405) 949-1483
- Medicaid ID
- 100124400A OK
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 128 in Oklahoma → Look up another NPI →
Also registered at 3525 NW 56TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica BallardAudiologist1407925332
- Teresa Caraway, PHDSpeech-Language Pathologist1538238746
- Saadia Chohan, MDHematology & Oncology Physician1306890074
- Wendelyn Demoss, CCC-SLPSpeech-Language Pathologist1437228558
- Tamara Elder, CCC-SLPSpeech-Language Pathologist1659440576
- Kimberly Fox, AU.D., CCC-AAudiologist-Hearing Aid Fitter1043445026
Verify Charles W. Hollen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 15779Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
90 Medicare Part D claims for 38 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Letrozole18 claims
- Citalopram Hbr11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $48.69
3 payments; by number, the most common kind was education; the largest payer was Ipsen Biopharmaceuticals, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Charles W. Hollen among 128 hematology & oncology physician records in Oklahoma
Charles W. Hollen, M.D. is one of 128 hematology & oncology physician records with a practice address in Oklahoma. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 76% of these records are
- Record last updated2009 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Oklahoma
There are 128 hematology & oncology physician records in Oklahoma.
All 128 in Oklahoma → Every provider in Oklahoma City → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Saadia Chohan, MDOklahoma City, OK 731121306890074
- Gregory Parker, M.D.Oklahoma City, OK 731121972544625
- Stephen Hamilton, M.D.Midwest City, OK 731101043210370
- Todd Kliewer, M.D.Midwest City, OK 731101396745741
- Bilal Ahmad, M.DOklahoma City, OK 731091275845778
- Bashar Alasad, M.D.Oklahoma City, OK 731091215988803
- Laila Babar, MDOklahoma City, OK 731091760907513
- Richard Bottomley, M.D.Oklahoma City, OK 731091174609770
Common questions
What is Charles W. Hollen, M.D.'s NPI number?
Charles W. Hollen, M.D.'s National Provider Identifier (NPI) is 1205855723, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles W. Hollen, M.D. located?
The NPPES record lists a practice address at 3525 NW 56TH St, Oklahoma City, OK, 73112. Phone: (405) 942-9200. Providers update this record themselves, so call before visiting.
How can I verify Charles W. Hollen, M.D.'s license?
NPPES lists Oklahoma license number 15779, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles W. Hollen, M.D. prescribe under Medicare Part D?
In 2024, Charles W. Hollen, M.D. had 90 Medicare Part D claims for 38 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Charles W. Hollen, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.