William Andrew Parker, D.O.
Critical Care Medicine (Internal Medicine) Physician · Columbia, MO
William Andrew Parker, D.O. is a critical care medicine (internal medicine) physician with a practice address in Columbia, Missouri, and NPI 1790946333, issued on Jun 17, 2008. Check the license (Missouri 2009026502, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- William Andrew Parker
- Credential
- D.O.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 2009026502 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Hospital Dr, Columbia, MO 65212
- Phone
- (573) 882-8788
- Enumerated
- Jun 17, 2008
- Record last updated
- Apr 18, 2023
- Fax
- (573) 884-4892
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 178 in Missouri → Look up another NPI →
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Verify William Andrew Parker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2009026502Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
29 Medicare Part D claims, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of 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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
William Andrew Parker among 178 critical care medicine (internal medicine) physician records in Missouri
William Andrew Parker, D.O. is one of 178 critical care medicine (internal medicine) physician records with a practice address in Missouri. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 47% of them.
- NPI issued2008 · 47% of these records are older, 49% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2023 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Missouri
There are 178 critical care medicine (internal medicine) physician records in Missouri.
All 178 in Missouri → Every provider in Columbia → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Jonathan Ang, M.D.Columbia, MO 652121780956862
- Dennis Chairman, M.D.Columbia, MO 652121043486764
- Jonathan Collins, MDColumbia, MO 652121659473510
- Hunter Hofmann, M.D.Columbia, MO 652121497707996
- Zachary Holliday, M.D.Columbia, MO 652121306108790
- Jeremy Johnson, D.O.Columbia, MO 652121881618155
- Satish Kalanjeri Balasubramanian, MDColumbia, MO 652121942459433
- James Kessel, MDColumbia, MO 652121174560809
Common questions
What is William Andrew Parker, D.O.'s NPI number?
William Andrew Parker, D.O.'s National Provider Identifier (NPI) is 1790946333, issued on Jun 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is William Andrew Parker, D.O. located?
The NPPES record lists a practice address at 1 Hospital Dr, Columbia, MO, 65212. Phone: (573) 882-8788. Providers update this record themselves, so call before visiting.
How can I verify William Andrew Parker, D.O.'s license?
NPPES lists Missouri license number 2009026502, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Andrew Parker, D.O. prescribe under Medicare Part D?
In 2024, William Andrew Parker, D.O. had 29 Medicare Part D claims; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
What is William Andrew Parker, D.O.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.