Jon H. Ritter, MD
Anatomic Pathology & Clinical Pathology Physician · Saint Louis, MO
Jon H. Ritter, MD is an anatomic pathology & clinical pathology physician with a practice address in Saint Louis, Missouri, and NPI 1366460784, issued on Jul 17, 2006. Check the license (Missouri 100817, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Jon H. Ritter
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 100817 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 362-5641
- Enumerated
- Jul 17, 2006
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-0369
- Medicaid ID
- 203566518 MO
- Medicare enrollment
- Enrolled (PECOS I20100305000570); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Homeopathic Medicine - Nlg, 1988
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 348 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jon H. Ritter 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 100817Check 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.3 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).
Industry payments in 2024: $8,008.71
6 payments; by number, the most common kind was food and beverage; the largest payer was Roche Diagnostics Corporation. The 2,607 providers of this specialty with any payment received $3,565.00 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.
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jon H. Ritter among 348 anatomic pathology & clinical pathology physician records in Missouri
Jon H. Ritter, MD is one of 348 anatomic pathology & clinical pathology physician records with a practice address in Missouri. 58% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 57% newer
- In a Medicare fileYes · 58% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1988 · median 2004 among the 189 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Missouri
There are 348 anatomic pathology & clinical pathology physician records in Missouri.
All 348 in Missouri → Every provider in Saint Louis → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Timothy Amukele, MDSaint Louis, MO 631101871503276
- Elizabeth Brunt, MDSaint Louis, MO 631101275547754
- Dengfeng Cao, MDSaint Louis, MO 631101205894573
- John Frater, MDSaint Louis, MO 631101407873920
- Anjum Hassan, MDSaint Louis, MO 631101184640302
- Necat Havlioglu, MDSaint Louis, MO 631101033162094
- Phyllis Huettner, MDSaint Louis, MO 631101730105057
- Hannah Krigman, MDSaint Louis, MO 631101336114164
Common questions
What is Jon H. Ritter, MD's NPI number?
Jon H. Ritter, MD's National Provider Identifier (NPI) is 1366460784, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jon H. Ritter, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 362-5641. Providers update this record themselves, so call before visiting.
How can I verify Jon H. Ritter, MD's license?
NPPES lists Missouri license number 100817, 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.
What is Jon H. Ritter, MD's MIPS final score?
The 2023 MIPS final score is 79.3 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.