Richard William Petrella, MD
Internal Medicine Physician · Saint Louis, MO
Richard William Petrella, MD is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1437728144, issued on Jun 18, 2021. Check the license (Missouri 2021021835, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Richard William Petrella
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2021021835 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 374-7612
- Enumerated
- Jun 18, 2021
- Record last updated
- Jun 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
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Verify Richard William Petrella 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 2021021835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
493 Medicare Part D claims for 68 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium31 claims
- Pantoprazole Sodium28 claims
- Spironolactone28 claims
- Amlodipine Besylate27 claims
- Losartan Potassium25 claims
- Montelukast Sodium18 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.
Richard William Petrella among 2,604 internal medicine physician records in Missouri
Richard William Petrella, 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 2021, is newer than 79% of them.
- NPI issued2021 · 79% of these records are older, 17% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2021 · 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).
941 internal medicine physician records list a practice address in Saint Louis
They are 941 of the 27,605 NPPES records with a practice address in Saint Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Saint 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 Richard William Petrella, MD's NPI number?
Richard William Petrella, MD's National Provider Identifier (NPI) is 1437728144, issued on Jun 18, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Richard William Petrella, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 374-7612. Providers update this record themselves, so call before visiting.
How can I verify Richard William Petrella, MD's license?
NPPES lists Missouri license number 2021021835, 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 Richard William Petrella, MD prescribe under Medicare Part D?
In 2024, Richard William Petrella, MD had 493 Medicare Part D claims for 68 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.