William H. Fritz, MD
Internal Medicine Physician · Washington, MO
William H. Fritz, MD is an internal medicine physician with a practice address in Washington, Missouri, and NPI 1407820913, issued on Feb 14, 2006. Check the license (Missouri 102131, 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 H. Fritz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 102131 MO
Self-reported in NPPES; status is on the state search - Practice location
- 851 E 5TH St, Washington, MO 63090
- Phone
- (636) 390-2350
- Enumerated
- Feb 14, 2006
- Record last updated
- Jul 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20040712000080); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 1987
- Entity
- Type 1 · individual
Also registered at 851 E 5TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William H. Fritz 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 102131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average internal medicine physician in 2024
7,314 Medicare Part D claims for 592 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 180 claims were for opioids.
Most prescribed
- Atorvastatin Calcium301 claims
- Famotidine269 claims
- Levothyroxine Sodium254 claims
- Losartan Potassium240 claims
- Omeprazole223 claims
- Amlodipine Besylate186 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 2 group practices
- Legacy Healthcare Services IncWashington, MO
- Mercy Clinic East CommunitiesWashington, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
25 internal medicine physician records list a practice address in Washington
They are 25 of the 533 NPPES records with a practice address in Washington, and 2,604 internal medicine physician records in Missouri.
All 25 in Washington → All 2,604 in Missouri → Every provider in Washington →
Other internal medicine physician records in Missouri
- Betty Abban, M.D.Springfield, MO1063893162
- Amer Abbas, MDSaint Louis, MO1508480666
- Fizza Abbas, MDSaint Louis, MO1588079230
- Marghoob Abbas, M.D.St Joseph, MO1588603781
- Muhammad Khalid Abbas, M.D.Springfield, MO1447877089
- Sundas Abbas, MDRichmond Heights, MO1649790486
- Hajira Abbasi, DOSaint Louis, MO1194036947
- Catey Abbott, DOSaint Louis, MO1699355347
- David Abbott, MDRichmond Heights, MO1568448850
- Wael Abduljaber, MDSaint Louis, MO1174101489
Common questions
What is William H. Fritz, MD's NPI number?
William H. Fritz, MD's National Provider Identifier (NPI) is 1407820913, issued on Feb 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William H. Fritz, MD located?
The NPPES record lists a practice address at 851 E 5TH St, Washington, MO, 63090. Phone: (636) 390-2350. Providers update this record themselves, so call before visiting.
How can I verify William H. Fritz, MD's license?
NPPES lists Missouri license number 102131, 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 H. Fritz, MD prescribe under Medicare Part D?
In 2024, William H. Fritz, MD had 7,314 Medicare Part D claims for 592 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.