Thomas James Whalen, D.O.
Internal Medicine Physician · Norman, OK
Thomas James Whalen, D.O. is an internal medicine physician with a practice address in Norman, Oklahoma, and NPI 1891869640, issued on Nov 20, 2006. Check the license (Oklahoma 3124, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Thomas James Whalen
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 3124 OK
Self-reported in NPPES; status is on the state search - Practice location
- 3300 Healthplex Pkwy, Norman, OK 73072
- Phone
- (405) 515-1000
- Enumerated
- Nov 20, 2006
- Record last updated
- Feb 2, 2026
- Fax
- (405) 579-0477
- Medicaid ID
- 100120010A OK
- Medicare enrollment
- Enrolled (PECOS I20080925000717); accepts Medicare assignment
- Medical or professional school
- Oklahoma State University College Of Osteopathic Medicine, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,115 in Oklahoma → Look up another NPI →
Also registered at 3300 Healthplex Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimberly Abernathy, APRN-CNPNurse Practitioner1356758817
- Ashley Agee, PA-CPhysician Assistant1619390523
- Alexandra Bass, APRN-CNPAcute Care Nurse Practitioner1215778501
- Makenzie Bender, DO, MPH, CPHEmergency Medicine Physician1457248312
- Erin Blass, CRNACertified Registered Nurse Anesthetist1487548491
- Sydney Boothe, APRN-BC, DNPNeonatal Nurse Practitioner1396380317
Verify Thomas James Whalen 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 3124Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
203 Medicare Part D claims for 128 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 18 claims were for opioids.
Most prescribed
- Pantoprazole Sodium13 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.
Bills Medicare through one group practice
- Norman Inpatient Physicians PLLCNorman, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas James Whalen among 1,115 internal medicine physician records in Oklahoma
Thomas James Whalen, D.O. is one of 1,115 internal medicine physician records with a practice address in Oklahoma. 77% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 57% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1992 · median 2007 among the 653 with a school on file
- Record last updated2026 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Oklahoma
There are 1,115 internal medicine physician records in Oklahoma.
All 1,115 in Oklahoma → Every provider in Norman → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sanober Malik, MDNorman, OK 730721891835708
- Sarah Brown, MDNorman, OK 730711376172064
- Jonathan Bryan, D.O.Norman, OK 730711437363702
- Joan Beatrice Capellan, MDNorman, OK 730711922798966
- Geo Philips Chacko, MDNorman, OK 730711700842440
- Mehmood Cheema, MDNorman, OK 730711245867779
- Steffie-Ann Dujon, MDNorman, OK 730711922637131
- Kumar Ennamuri, MDNorman, OK 730711396783056
Common questions
What is Thomas James Whalen, D.O.'s NPI number?
Thomas James Whalen, D.O.'s National Provider Identifier (NPI) is 1891869640, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas James Whalen, D.O. located?
The NPPES record lists a practice address at 3300 Healthplex Pkwy, Norman, OK, 73072. Phone: (405) 515-1000. Providers update this record themselves, so call before visiting.
How can I verify Thomas James Whalen, D.O.'s license?
NPPES lists Oklahoma license number 3124, 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 Thomas James Whalen, D.O. prescribe under Medicare Part D?
In 2024, Thomas James Whalen, D.O. had 203 Medicare Part D claims for 128 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.