James C. Ziegler, M.D.
Radiation Oncology Physician · Lawton, OK
James C. Ziegler, M.D. is a radiation oncology physician with a practice address in Lawton, Oklahoma, and NPI 1689692725, issued on Jul 17, 2006. Check the license (Oklahoma 18667, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- James C. Ziegler
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 18667 OK
Self-reported in NPPES; status is on the state search - Practice location
- 104 NW 31St St, Lawton, OK 73505
- Phone
- (580) 536-2121
- Enumerated
- Jul 17, 2006
- Record last updated
- Feb 1, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (580) 536-2150
- Medicaid ID
- 100008450A OK
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 56 in Oklahoma → Look up another NPI →
Also registered at 104 NW 31St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anmol Baranwal, M.D.Hematology & Oncology Physician1083008643
- Marina Garrison, APRN-NPCFamily Nurse Practitioner1902207798
- Vinicius Machado Jorge, M.D.Hematology & Oncology Physician1932581402
- Winona Mackey, M.D.Radiation Oncology Physician1952499592
- McKenzie MartinGerontology Nurse Practitioner1144088048
- Nadim Nimeh, M.D.Hematology & Oncology Physician1275512915
Verify James C. Ziegler 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 18667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 91.2 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).
James C. Ziegler among 56 radiation oncology physician records in Oklahoma
James C. Ziegler, M.D. is one of 56 radiation oncology physician records with a practice address in Oklahoma. 70% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 43% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2012 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Oklahoma
There are 56 radiation oncology physician records in Oklahoma.
All 56 in Oklahoma → Every provider in Lawton → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Jimmy Kerley, MDLawton, OK 735051508803156
- Winona Mackey, M.D.Lawton, OK 735051952499592
- Paul Erba, MDEnid, OK 737011619050622
- Shripal Bhavsar, MD, MBAOklahoma City, OK 731421720254923
- Nancy Cersonsky, MDOklahoma City, OK 731421578774865
- Michael Confer, M.D.Oklahoma City, OK 731421336346337
- Sakuntala Dutta, M.DOklahoma City, OK 731421588846521
- Robert Gaston, DOOklahoma City, OK 731421619946068
Common questions
What is James C. Ziegler, M.D.'s NPI number?
James C. Ziegler, M.D.'s National Provider Identifier (NPI) is 1689692725, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James C. Ziegler, M.D. located?
The NPPES record lists a practice address at 104 NW 31St St, Lawton, OK, 73505. Phone: (580) 536-2121. Providers update this record themselves, so call before visiting.
How can I verify James C. Ziegler, M.D.'s license?
NPPES lists Oklahoma license number 18667, 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.
What is James C. Ziegler, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.2 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.