Active NPI 1023024973 Individual Practitioner Male Practitioner

Dr. Gregorius Resuma Penilla , MD

Internal Medicine • Fenton, MO

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Gregorius Penilla, MD is a certified Internal Medicine practicing in Fenton, MO. With approximately 45 years of clinical experience since completing medical education in 1981, Dr. Penilla delivers high-quality medical care to the local community at 1345 SMIZER MILL RD STE 1100.

Dr. Penilla is affiliated with Ssm Medical Group Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1345 Smizer Mill Rd Ste 1100

Fenton, MO 630267305

Telephone 6364965040

Associated Practice Facility / Clinic

🏢 Ssm Medical Group, Inc. Facility NPI 1194736116

Medicare Profile & Education

Medical School

Other

Graduation Year

1981

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Fenton, MO

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

45 Yrs +14.0 yrs vs City Avg

City Avg: 31.0 Yrs

State Avg: 25.5 Yrs

Regional Practice Density

13 Specialists

Practicing in Fenton, MO (2747 Statewide)

Telehealth Adoption Rate

23.1% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

53.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Penilla (45 Years) 45 Yrs

Fenton Specialty Average (31.0 Years) 31.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	323	173	$295.00	$122.80
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	148	148	$262.00	$124.05
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	143	107	$35.00	$15.84
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	62	47	$361.00	$173.62
G0008 Administration of influenza virus vaccine	40	39	$48.00	$31.21
90480 Admn sarscov2 vacc 1 dose	38	35	$90.00	$41.62
90653 Vaccine for influenza for injection into muscle	34	34	$167.00	$81.82
91322 Sarscov2 vac 50 mcg/0.5ml im	19	19	$311.00	$158.42
91320 Sarscv2 vac 30mcg trs-suc im	19	19	$288.00	$128.48
71046 X-ray of chest, 2 views	19	17	$63.00	$21.78
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	16	16	$335.00	$158.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	355	190	$256.00	$124.05
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	165	165	$262.00	$124.50
G0008 Administration of influenza virus vaccine	45	43	$48.00	$29.94
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	42	41	$147.29	$74.75
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	35	30	$361.00	$174.23
71046 X-ray of chest, 2 views	18	17	$63.00	$22.57
90480 Admn sarscov2 vacc 1 dose	15	15	$90.00	$39.92
91320 Sarscv2 vac 30mcg trs-suc im	15	15	$288.00	$128.48
99213 Established patient office or other outpatient visit, typically 15 minutes	13	13	$182.00	$87.99
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	13	13	$335.00	$160.47
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	12	12	$530.00	$280.07
G0009 Administration of pneumococcal vaccine	12	12	$48.00	$29.94

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	313	185	$235.00	$125.03
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	138	138	$230.00	$128.84
G0008 Administration of influenza virus vaccine	39	39	$48.00	$29.00
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	36	36	$122.00	$70.25
G0009 Administration of pneumococcal vaccine	29	29	$48.00	$29.09
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	27	27	$530.00	$278.47
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	25	25	$315.00	$178.65
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	22	22	$340.00	$158.55
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	17	17	$331.00	$165.09
93000 Routine ekg using at least 12 leads including interpretation and report	14	14	$53.36	$14.19
71046 X-ray of chest, 2 views	13	12	$46.00	$23.00
99213 Established patient office or other outpatient visit, typically 15 minutes	11	11	$160.00	$89.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	224	156	$230.36	$127.50
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	137	137	$203.00	$131.65
G0008 Administration of influenza virus vaccine	38	36	$43.00	$16.77
99213 Established patient office or other outpatient visit, typically 15 minutes	29	25	$157.59	$91.03
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	25	25	$95.00	$66.43
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	24	22	$305.83	$180.50
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	19	19	$300.00	$166.89
G0009 Administration of pneumococcal vaccine	19	19	$43.00	$16.79
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$225.00	$125.92
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$291.00	$167.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	187	133	$218.00	$107.95
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	120	120	$203.00	$114.89
99213 Established patient office or other outpatient visit, typically 15 minutes	50	40	$148.00	$72.04
G0008 Administration of influenza virus vaccine	33	33	$43.00	$16.53
90662 Influenza vaccine split virus, preservative free	31	31	$78.00	$60.98
93000 Routine ekg using at least 12 leads including interpretation and report	26	26	$48.00	$16.95
G0009 Administration of pneumococcal vaccine	23	23	$43.00	$16.44
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	20	20	$300.00	$168.80
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	15	15	$214.00	$119.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	236	141	$162.18	$107.75
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	115	115	$163.37	$115.74
G0008 Administration of influenza virus vaccine	81	79	$35.10	$16.20
90662 Influenza vaccine split virus, preservative free	77	76	$70.36	$54.86
99213 Established patient office or other outpatient visit, typically 15 minutes	72	55	$112.90	$73.82
93000 Routine ekg using at least 12 leads including interpretation and report	70	68	$41.37	$16.89
G0009 Administration of pneumococcal vaccine	46	46	$33.87	$16.20
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	33	33	$166.73	$110.01
90670 Pneumococcal vaccine for injection into muscle	15	15	$250.73	$208.35
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	15	15	$234.00	$171.14
81003 Automated urinalysis test	14	11	$12.29	$2.44
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	13	13	$231.00	$165.92
G0403 Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report	13	13	$54.85	$16.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	264	148	$148.00	$105.28
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	114	114	$154.00	$114.49
G0008 Administration of influenza virus vaccine	98	95	$33.00	$19.90
90662 Influenza vaccine split virus, preservative free	95	92	$60.00	$52.12
99213 Established patient office or other outpatient visit, typically 15 minutes	71	58	$101.00	$71.34
82270 Stool analysis for blood to screen for colon tumors	39	39	$16.00	$4.29
G0009 Administration of pneumococcal vaccine	29	29	$33.00	$19.90
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	23	23	$234.00	$168.81
90670 Pneumococcal vaccine for injection into muscle	20	20	$225.00	$197.96
93000 Routine ekg using at least 12 leads including interpretation and report	11	11	$40.00	$16.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	277	148	$15.00	$2.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	232	135	$148.00	$103.92
G0008 Administration of influenza virus vaccine	109	106	$33.00	$24.52
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	105	105	$154.00	$112.95
90662 Influenza vaccine split virus, preservative free	97	97	$60.00	$48.05
99213 Established patient office or other outpatient visit, typically 15 minutes	97	73	$101.00	$70.50
82270 Stool analysis for blood to screen for colon tumors	59	59	$16.00	$4.37
93000 Routine ekg using at least 12 leads including interpretation and report	32	31	$40.00	$16.65
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	22	22	$234.00	$167.01
G0009 Administration of pneumococcal vaccine	16	16	$33.00	$24.52
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$150.00	$106.41
90670 Pneumococcal vaccine for injection into muscle	12	12	$225.00	$185.95
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$226.00	$162.31
G0403 Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report	11	11	$54.00	$16.69

Medical Specialties & State Licenses

CMS Verified: 2020-10-26

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MO 36678

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Hospital & Practice Group Affiliations

Ssm Medical Group Inc

1345 Smizer Mill Rd, Fenton, MO 630267305

Ssm Medical Group Inc

1035 Bellevue Ave, Saint Louis, MO 631171843

Phone: 3149254770

Secondary Practice Locations

14309 Manchester Rd

Manchester, MO 630114050

Phone: 6362278880

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

12 Associated Practitioners

Dr. Susan Gray , MD

Family Medicine

NPI 1003174004

Doctor of Medicine (M.D.)

Cynthia Visintine , FNP

Nurse Practitioner

NPI 1033578117

Family Nurse Practitioner

Dr. Sarah Ludlow , MD

Family Medicine

NPI 1053676593

Doctor of Medicine (M.D.)

Dr. Edward Reh , MD

Internal Medicine

NPI 1124046354

Doctor of Medicine (M.D.)

Kimberly Daller , FNP-BC

Nurse Practitioner - Family

NPI 1164064440

Family Nurse Practitioner (Board Certified)

Kelcy Oesterreich , NP

Nurse Practitioner - Family

NPI 1417504267

Nurse Practitioner

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location October 26, 2020

Registered at 1345 SMIZER MILL RD STE 1100, FENTON, MO 630267305 (Tel: 6364965040)

📍

Updated Business Mailing Address October 26, 2020

Registered at PO BOX 955534, SAINT LOUIS, MO 631955534

✅

NPI Profile Active October 18, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location October 18, 2007

Registered at 14309 MANCHESTER RD, MANCHESTER, MO 630114050 (Tel: 6362278880)

📍

Updated Business Mailing Address October 18, 2007

Registered at 14309 MANCHESTER RD, MANCHESTER, MO 630114050 (Tel: 6362278880)

👤

Provider Name / Credentials Updated October 18, 2007

Recorded as GREGORIUS PENILLA, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 18, 2007

Internal Medicine (License #36678 in MO)

🟢

Initial NPI Registration & Enumeration July 31, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1023024973

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 31, 2006

Last Update: October 26, 2020

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

Po Box 955534

Saint Louis, MO 631955534

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.