Gregorius Resuma Penilla, M.D.
Internal Medicine Physician · Fenton, MO
Gregorius Resuma Penilla, M.D. is an internal medicine physician with a practice address in Fenton, Missouri, and NPI 1023024973, issued on Jul 31, 2006. Check the license (Missouri 36678, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Gregorius Resuma Penilla
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 36678 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1345 Smizer Mill RD Ste 1100, Fenton, MO 63026
- Phone
- (636) 496-5040
- Enumerated
- Jul 31, 2006
- Record last updated
- Oct 26, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20071113000601); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 1345 Smizer Mill RD Ste 1100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diane Block, NPNurse Practitioner1699158196
- Kimberly Daller, FNP-BCFamily Nurse Practitioner1164064440
- Rachel George, MDInternal Medicine Physician1679546592
- Susan Gray, MDFamily Medicine Physician1003174004
- Sarah Ludlow, M.D.Family Medicine Physician1053676593
- Stephanie Massey, D.O.Family Medicine Physician1801236393
Verify Gregorius Resuma Penilla 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 36678Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,857 Medicare Part D claims for 510 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 33 claims were for opioids.
Most prescribed
- Atorvastatin Calcium830 claims
- Amlodipine Besylate355 claims
- Losartan Potassium311 claims
- Lisinopril275 claims
- Metformin Hcl210 claims
- Simvastatin191 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: $6,252.64
12 payments; by number, the most common kind was travel and lodging; the largest payer was Otsuka Pharmaceutical Development & Commercialization, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Ssm Medical Group IncSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregorius Resuma Penilla among 2,604 internal medicine physician records in Missouri
Gregorius Resuma Penilla, M.D. 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
- Graduated1981 · median 2006 among the 1,443 with a school on file
- Record last updated2020 · 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).
13 internal medicine physician records list a practice address in Fenton
They are 13 of the 493 NPPES records with a practice address in Fenton, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Fenton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Emily Bahram-Ahi, M.D.Fenton, MO 630261265832075
- Douglas Dripps, M.D.Fenton, MO 630261295768323
- Rachel George, MDFenton, MO 630261679546592
- Jeffrey Hallazgo, M.D.Fenton, MO 630261073538302
- Sri Kolli, M.D.Fenton, MO 630261558308361
- Jerald Maslanko, M.D.Fenton, MO 630261386707396
- Vladimir Milo, M.D.Fenton, MO 630261609848852
- Gloria Ojerinde, MDFenton, MO 630261003559295
Common questions
What is Gregorius Resuma Penilla, M.D.'s NPI number?
Gregorius Resuma Penilla, M.D.'s National Provider Identifier (NPI) is 1023024973, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregorius Resuma Penilla, M.D. located?
The NPPES record lists a practice address at 1345 Smizer Mill RD Ste 1100, Fenton, MO, 63026. Phone: (636) 496-5040. Providers update this record themselves, so call before visiting.
How can I verify Gregorius Resuma Penilla, M.D.'s license?
NPPES lists Missouri license number 36678, 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 Gregorius Resuma Penilla, M.D. prescribe under Medicare Part D?
In 2024, Gregorius Resuma Penilla, M.D. had 6,857 Medicare Part D claims for 510 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.