David J. Knorr, D.O.
Family Medicine Physician · Palmyra, MO
David J. Knorr, D.O. is a family medicine physician with a practice address in Palmyra, Missouri, and NPI 1255310850, issued on Jan 11, 2006. Check the license (Missouri 2001001473, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- David J. Knorr
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 2001001473 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1811 S Main St, Palmyra, MO 63461
- Phone
- (573) 769-2231
- Enumerated
- Jan 11, 2006
- Record last updated
- Mar 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (573) 769-3953
- Medicaid ID
- 245289400 MO
- Medicare enrollment
- Enrolled (PECOS I20091214000133); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1998
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,991 in Missouri → Look up another NPI →
Also registered at 1811 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amber Gottman, NP-CFamily Nurse Practitioner1831589944
- Gina Pontius, M.D.Family Medicine Physician1871793257
Verify David J. Knorr 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 2001001473Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.9 times the Medicare Part D claims of the average family medicine physician in 2024
13,776 Medicare Part D claims for 729 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 896 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen543 claims
- Lisinopril510 claims
- Atorvastatin Calcium490 claims
- Amlodipine Besylate386 claims
- Metoprolol Succinate372 claims
- Levothyroxine Sodium353 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.
Industry payments in 2024: $932.81
60 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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
- Blessing HospitalHannibal, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David J. Knorr among 2,991 family medicine physician records in Missouri
David J. Knorr, D.O. is one of 2,991 family medicine physician records with a practice address in Missouri. 79% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 52% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1998 · median 2006 among the 1,778 with a school on file
- Record last updated2021 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 family medicine physician records list a practice address in Palmyra
They are 2 of the 27 NPPES records with a practice address in Palmyra, and 2,991 family medicine physician records in Missouri.
All 2,991 in Missouri → Every provider in Palmyra → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Gina Pontius, M.D.Palmyra, MO 634611871793257
- Joseph Beahan, D.O.Perry, MO 634621255317228
- Rodney Yager, D.O.Monroe City, MO 634561851321202
- Wendell Nickerson, D.O.Shelbina, MO 634681437249588
- David Ouellette, M.D.Shelbina, MO 634681093794588
- Aaron Neisen, D.O.La Belle, MO 634471841686029
- Brigitte Cormier, DOKahoka, MO 634451124138367
- Neville Crenshaw, DOKahoka, MO 634451316994783
Common questions
What is David J. Knorr, D.O.'s NPI number?
David J. Knorr, D.O.'s National Provider Identifier (NPI) is 1255310850, issued on Jan 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David J. Knorr, D.O. located?
The NPPES record lists a practice address at 1811 S Main St, Palmyra, MO, 63461. Phone: (573) 769-2231. Providers update this record themselves, so call before visiting.
How can I verify David J. Knorr, D.O.'s license?
NPPES lists Missouri license number 2001001473, 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 David J. Knorr, D.O. prescribe under Medicare Part D?
In 2024, David J. Knorr, D.O. had 13,776 Medicare Part D claims for 729 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.