Joseph H. Flaherty, MD
Internal Medicine Physician · St Louis, MO
Joseph H. Flaherty, MD is an internal medicine physician with a practice address in St Louis, Missouri, and NPI 1710995568, issued on Aug 4, 2006. Check the license (Missouri 103448, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Joseph H. Flaherty
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 103448 MO
R4546 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3660 Vista, St Louis, MO 63110
- Phone
- (314) 977-8462
- Enumerated
- Aug 4, 2006
- Record last updated
- Jan 27, 2026
- Fax
- (314) 771-8575
- Medicare enrollment
- Enrolled (PECOS I20180123003116); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph H. Flaherty 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 103448Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,064 Medicare Part D claims for 66 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 47 claims were for opioids.
Most prescribed
- Amlodipine Besylate109 claims
- Quetiapine Fumarate103 claims
- Atorvastatin Calcium94 claims
- Trazodone Hcl94 claims
- Levothyroxine Sodium64 claims
- Losartan Potassium60 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 one group practice
- Questcare Matrix PLLCPlano, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph H. Flaherty among 2,604 internal medicine physician records in Missouri
Joseph H. Flaherty, MD is one of 2,604 internal medicine physician records with a practice address in Missouri. 77% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1990 · median 2006 among the 1,443 with a school on file
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
58 internal medicine physician records list a practice address in St Louis
They are 58 of the 1,420 NPPES records with a practice address in St Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in St Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Bartholet, MDSaint Louis, MO 631101750325742
- Rakhee Bhayani, MDSaint Louis, MO 631101477579787
- Mohammed Haque, MDSaint Louis, MO 631101689604100
- Charles Lieu, MDSaint Louis, MO 631101871510396
- Kenneth Ludmerer, MDSaint Louis, MO 631101366468597
- Barbara Lutey, MDSaint Louis, MO 631101306862628
- Heidi Miller, M.D.Saint Louis, MO 631101922082361
- Tracy Norfleet, MDSaint Louis, MO 631101487680377
Common questions
What is Joseph H. Flaherty, MD's NPI number?
Joseph H. Flaherty, MD's National Provider Identifier (NPI) is 1710995568, issued on Aug 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph H. Flaherty, MD located?
The NPPES record lists a practice address at 3660 Vista, St Louis, MO, 63110. Phone: (314) 977-8462. Providers update this record themselves, so call before visiting.
How can I verify Joseph H. Flaherty, MD's license?
NPPES lists Missouri license number 103448, 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 Joseph H. Flaherty, MD prescribe under Medicare Part D?
In 2024, Joseph H. Flaherty, MD had 2,064 Medicare Part D claims for 66 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.