Active NPI 1508974494 Individual Practitioner Male Practitioner

Dr. Michael Emanuel Grillis , DO

Surgery • Fremont, OH

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Michael Grillis, DO is a certified Surgery practicing in Fremont, OH. With approximately 49 years of clinical experience since graduating from West Virginia School Of Osteopathic Medicine in 1977, Dr. Grillis delivers high-quality medical care to the local community at 2281 HAYES AVE.

Dr. Grillis is affiliated with Memorial Professional Services Ltd and accepts Medicare assignment.

Frequently performed procedures and clinical services include removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2281 Hayes Ave

Fremont, OH 434202632

Telephone 4193558488

Fax 4193558890

Associated Practice Facility / Clinic

🏢 Rick Wiecek, Md Inc. Facility NPI 1811174790

Medicare Profile & Education

Medical School

West Virginia School Of Osteopathic Medicine

Graduation Year

1977

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Fremont, OH

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

49 Yrs Matches City Avg

City Avg: 49.0 Yrs

State Avg: 24.9 Yrs

Regional Practice Density

3 Specialists

Practicing in Fremont, OH (1313 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

76.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Grillis (49 Years) 49 Yrs

Fremont Specialty Average (49.0 Years) 49.0 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
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	96	96	$1076.00	$238.18
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	85	84	$958.00	$86.77
99213 Established patient office or other outpatient visit, typically 15 minutes	32	29	$127.00	$88.42
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$315.00	$163.47
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	28	27	$179.00	$124.92
45378 Diagnostic exam of large bowel using a flexible endoscope	26	26	$824.00	$171.42
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	23	21	$239.00	$128.75
45380 Biopsy of large bowel using an endoscope	21	21	$1309.00	$93.04
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	20	20	$792.35	$176.65
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	19	19	$824.00	$171.54
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$167.00	$108.28
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	15	15	$354.00	$170.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	92	92	$1076.00	$224.66
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	51	51	$958.00	$81.57
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	44	44	$795.23	$176.18
99213 Established patient office or other outpatient visit, typically 15 minutes	37	34	$112.00	$87.37
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$167.00	$108.73
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	35	35	$315.00	$158.17
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	26	$239.00	$128.15
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	24	$165.00	$120.06
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	23	23	$768.96	$172.09
45378 Diagnostic exam of large bowel using a flexible endoscope	19	19	$824.00	$175.05
99231 Follow-up hospital inpatient care per day, typically 15 minutes	19	13	$75.00	$49.04
99202 New patient office or other outpatient visit, typically 20 minutes	15	15	$155.00	$69.75
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	14	$75.00	$54.42
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	13	13	$354.00	$170.71
45388 Destruction of polyp or growth of large bowel using a flexible endoscope	12	12	$649.00	$264.18
45380 Biopsy of large bowel using an endoscope	11	11	$1309.00	$104.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	102	102	$1076.00	$226.29
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	86	86	$167.00	$109.94
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	79	79	$958.00	$83.38
99213 Established patient office or other outpatient visit, typically 15 minutes	67	56	$112.00	$87.96
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	47	47	$315.00	$164.62
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	40	37	$165.00	$125.31
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	31	30	$742.32	$166.51
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	30	30	$239.00	$132.21
45378 Diagnostic exam of large bowel using a flexible endoscope	30	30	$718.50	$167.07
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	28	27	$75.00	$55.24
99202 New patient office or other outpatient visit, typically 20 minutes	16	16	$155.00	$69.72
45380 Biopsy of large bowel using an endoscope	16	16	$1309.00	$83.83
99231 Follow-up hospital inpatient care per day, typically 15 minutes	14	11	$75.00	$38.27
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	13	13	$726.62	$169.81
45388 Destruction of polyp or growth of large bowel using a flexible endoscope	12	12	$649.00	$269.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	102	95	$75.00	$54.96
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	80	76	$958.00	$90.75
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	74	73	$1076.00	$239.52
99213 Established patient office or other outpatient visit, typically 15 minutes	68	62	$112.00	$89.89
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	60	60	$315.00	$166.33
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	47	47	$179.81	$110.73
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	46	42	$165.00	$127.93
45378 Diagnostic exam of large bowel using a flexible endoscope	31	30	$762.74	$174.65
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	24	24	$239.00	$135.12
99202 New patient office or other outpatient visit, typically 20 minutes	19	19	$155.00	$71.50
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	16	16	$354.00	$198.75
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$824.00	$187.73
47562 Removal of gallbladder using an endoscope	14	14	$1708.00	$678.46
45380 Biopsy of large bowel using an endoscope	12	12	$1309.00	$130.93

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	77	77	$315.00	$157.57
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	77	76	$75.00	$43.92
99213 Established patient office or other outpatient visit, typically 15 minutes	75	63	$112.00	$73.65
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	65	65	$1076.00	$233.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	59	54	$165.00	$107.17
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	56	55	$958.00	$97.41
99231 Follow-up hospital inpatient care per day, typically 15 minutes	35	21	$75.00	$39.70
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	30	30	$210.00	$105.78
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	26	$239.00	$138.91
45378 Diagnostic exam of large bowel using a flexible endoscope	26	26	$824.00	$168.33
47562 Removal of gallbladder using an endoscope	26	26	$1724.42	$684.89
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	20	$354.00	$203.80
45380 Biopsy of large bowel using an endoscope	16	16	$1309.00	$147.44
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	14	14	$824.00	$191.39
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	12	11	$127.00	$72.93

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	129	126	$71.59	$43.09
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	85	85	$284.98	$158.47
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	82	79	$958.00	$94.57
99213 Established patient office or other outpatient visit, typically 15 minutes	79	69	$104.41	$71.83
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	76	76	$1076.00	$203.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	67	59	$154.51	$102.70
45378 Diagnostic exam of large bowel using a flexible endoscope	36	36	$824.00	$149.56
99231 Follow-up hospital inpatient care per day, typically 15 minutes	29	18	$75.00	$38.94
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	27	$233.56	$135.28
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$185.00	$105.03
45388 Destruction of polyp or growth of large bowel using a flexible endoscope	23	23	$649.00	$270.96
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	22	22	$346.05	$196.78
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	21	21	$824.00	$188.68
45380 Biopsy of large bowel using an endoscope	19	19	$1309.00	$149.92
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$217.00	$127.56
47562 Removal of gallbladder using an endoscope	12	12	$1708.00	$638.04
45381 Injection beneath lining of large bowel using a flexible endoscope	11	11	$932.00	$33.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	105	105	$199.00	$156.67
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	102	101	$65.00	$41.66
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	74	73	$1056.22	$233.61
99213 Established patient office or other outpatient visit, typically 15 minutes	65	56	$92.00	$70.11
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	64	64	$958.00	$90.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	63	59	$128.00	$102.44
45378 Diagnostic exam of large bowel using a flexible endoscope	32	31	$824.00	$164.33
45380 Biopsy of large bowel using an endoscope	20	20	$1309.00	$122.56
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	20	20	$145.00	$103.83
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	19	19	$319.00	$198.71
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$824.00	$181.15
47562 Removal of gallbladder using an endoscope	12	12	$1708.00	$656.91
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$199.00	$126.86
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	12	11	$229.25	$134.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	98	98	$199.00	$145.43
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	97	91	$65.00	$38.93
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	77	69	$128.00	$95.81
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	71	68	$958.00	$94.32
99213 Established patient office or other outpatient visit, typically 15 minutes	68	59	$92.00	$63.97
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	54	52	$1076.00	$226.51
45378 Diagnostic exam of large bowel using a flexible endoscope	41	40	$824.00	$154.79
99231 Follow-up hospital inpatient care per day, typically 15 minutes	23	11	$75.00	$36.02
45380 Biopsy of large bowel using an endoscope	21	21	$1309.00	$125.20
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	20	$319.00	$186.83
47562 Removal of gallbladder using an endoscope	13	13	$1708.00	$614.58

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License OH 34004664

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

0739964 (OH)

Hospital & Practice Group Affiliations

Memorial Professional Services Ltd

715 S Taft Ave, Fremont, OH 434203237

Phone: 4193336462

Practice Associates & Co-Workers

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

2 Associated Practitioners

Jessica Carroll , MSN, FNP-C

Nurse Practitioner - Family

NPI 1255069985

Master of Science in Nursing, Family Nurse Practitioner (Certified)

Dr. Mennatallah Omar , MD

Surgery

NPI 1619359551

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 28, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location July 28, 2016

Registered at 2281 HAYES AVE, FREMONT, OH 434202632 (Tel: 4193558488)

📍

Updated Business Mailing Address July 28, 2016

Registered at 220 COUNTY ROAD 398, FREMONT, OH 434209253 (Tel: 4193344383)

👤

Provider Name / Credentials Updated July 28, 2016

Recorded as MICHAEL GRILLIS, DO

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 28, 2016

Surgery (License #34004664 in OH)

🟢

Initial NPI Registration & Enumeration August 29, 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: 1508974494

Entity Type:

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

Enumeration Date: August 29, 2006

Last Update: July 28, 2016

Sole Proprietor: No

Update or Correct Profile

Mailing Address

220 County Road 398

Fremont, OH 434209253

Phone: 4193344383

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.