Active NPI 1407848310 Individual Practitioner Male Practitioner

Dr. Kenneth R. Mauer , MD

Specialist • Fairfield, CT

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Kenneth Mauer, MD is a certified Specialist practicing in Fairfield, CT. With approximately 43 years of clinical experience since graduating from New York University School Of Medicine in 1983, Dr. Mauer delivers high-quality medical care to the local community at 425 POST RD.

Dr. Mauer is affiliated with Connecticut Gi Pllc and accepts Medicare assignment.

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

Practice Location & Contact Primary Location

Practice Address

425 Post Rd

Fairfield, CT 068246232

Telephone 2032929000

Fax 2032921700

Associated Practice Facility / Clinic

🏢 Gastroenterology Associates Of Fairfield Pc Facility NPI 1982793709

Medicare Profile & Education

Medical School

New York University School Of Medicine

Graduation Year

1983

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Specialist in Fairfield, CT

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

43 Yrs +8.1 yrs vs City Avg

City Avg: 34.9 Yrs

State Avg: 35.5 Yrs

Regional Practice Density

16 Specialists

Practicing in Fairfield, CT (452 Statewide)

Telehealth Adoption Rate

12.5% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

79.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mauer (43 Years) 43 Yrs

Fairfield Specialty Average (34.9 Years) 34.9 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
99213 Established patient office or other outpatient visit, typically 15 minutes	293	239	$187.00	$95.53
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	236	208	$819.50	$105.99
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	177	175	$1448.70	$260.70
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	136	122	$253.00	$133.69
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	53	53	$247.50	$117.31
45380 Biopsy of large bowel using an endoscope	51	51	$1177.00	$191.31
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	50	50	$1039.50	$185.82
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	50	50	$346.50	$175.70
45378 Diagnostic exam of large bowel using a flexible endoscope	49	49	$1039.50	$188.01
91065 Measurement of hydrogen in breath to test for stomach and bowel symptoms	40	21	$330.00	$79.49
43450 Dilation of esophagus	24	24	$385.00	$40.62
91110 Imaging of digestive tract done from the inside of the digestive tract	23	22	$2697.39	$518.14
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	20	20	$1039.50	$190.07
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	17	16	$726.00	$123.01
99202 New patient office or other outpatient visit, typically 20 minutes	15	15	$168.30	$76.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	341	269	$187.00	$96.72
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	199	175	$819.50	$112.37
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	170	169	$1448.70	$266.22
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	94	86	$253.00	$135.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	77	77	$247.50	$120.19
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	55	55	$1039.50	$190.26
45380 Biopsy of large bowel using an endoscope	41	41	$1177.00	$153.88
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	37	37	$346.50	$177.74
45378 Diagnostic exam of large bowel using a flexible endoscope	36	36	$1039.50	$189.79
91110 Imaging of digestive tract done from the inside of the digestive tract	28	28	$3135.00	$696.29
43450 Dilation of esophagus	20	20	$385.00	$42.37
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	17	17	$726.00	$113.79
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	13	13	$1039.50	$194.15

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	296	238	$166.36	$98.63
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	221	193	$1164.37	$115.00
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	164	163	$1582.82	$272.54
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	155	140	$240.54	$137.81
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	70	70	$1324.77	$196.61
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	54	54	$219.72	$121.65
45380 Biopsy of large bowel using an endoscope	46	46	$1351.72	$171.57
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	33	28	$116.18	$75.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$313.97	$180.96
45378 Diagnostic exam of large bowel using a flexible endoscope	26	26	$1201.19	$197.29
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	24	23	$736.42	$120.56
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	23	22	$244.43	$143.39
91110 Imaging of digestive tract done from the inside of the digestive tract	19	18	$3068.42	$784.96
43450 Dilation of esophagus	17	17	$328.88	$41.16
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$1236.56	$198.13
43249 Balloon dilation of esophagus using an endoscope	16	11	$1093.50	$164.37
99202 New patient office or other outpatient visit, typically 20 minutes	15	15	$166.76	$79.56

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	292	217	$140.00	$99.11
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	226	200	$1500.00	$116.29
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	169	165	$1751.48	$270.81
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	133	125	$230.00	$140.77
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	77	77	$1565.00	$198.75
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	60	52	$115.00	$76.56
45380 Biopsy of large bowel using an endoscope	56	55	$1600.00	$178.08
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	45	45	$290.00	$181.96
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	35	34	$751.00	$125.37
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	30	30	$185.00	$122.78
45378 Diagnostic exam of large bowel using a flexible endoscope	30	28	$1565.00	$192.18
91110 Imaging of digestive tract done from the inside of the digestive tract	24	22	$2750.00	$955.48
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	21	21	$222.00	$144.89
99202 New patient office or other outpatient visit, typically 20 minutes	18	18	$165.00	$80.03
43264 Removal of stone from bile or pancreatic duct using an endoscope	15	14	$2300.00	$277.49
43262 Incision of pancreatic outlet using a flexible endoscope	12	12	$2020.00	$153.77
43450 Dilation of esophagus	11	11	$226.00	$43.15
43249 Balloon dilation of esophagus using an endoscope	11	11	$1197.00	$166.49

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	276	193	$140.00	$81.41
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	170	152	$1500.00	$125.83
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	160	157	$1750.00	$283.47
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	117	110	$230.00	$118.99
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	59	47	$115.00	$78.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	47	47	$185.00	$114.94
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	41	41	$1565.00	$196.32
45380 Biopsy of large bowel using an endoscope	38	38	$1600.00	$142.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	36	36	$290.00	$179.97
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	31	29	$751.00	$130.01
45378 Diagnostic exam of large bowel using a flexible endoscope	25	25	$1565.00	$193.93
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	17	17	$325.00	$219.76
91110 Imaging of digestive tract done from the inside of the digestive tract	13	13	$2750.00	$979.49
43264 Removal of stone from bile or pancreatic duct using an endoscope	13	12	$2300.00	$348.64
43450 Dilation of esophagus	12	12	$226.00	$43.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	308	231	$137.68	$80.50
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	209	179	$1423.56	$124.16
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	199	195	$1693.53	$285.03
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	116	107	$225.97	$117.53
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	88	67	$114.68	$77.63
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	63	63	$284.29	$177.66
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	61	57	$751.00	$123.72
45380 Biopsy of large bowel using an endoscope	51	51	$1553.33	$139.34
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	48	48	$1489.90	$203.22
45378 Diagnostic exam of large bowel using a flexible endoscope	41	39	$1514.76	$193.34
91110 Imaging of digestive tract done from the inside of the digestive tract	34	33	$2625.88	$980.72
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$183.52	$117.69
91065 Measurement of hydrogen in breath to test for stomach and bowel symptoms	20	20	$185.00	$84.34
43450 Dilation of esophagus	16	16	$226.00	$44.36
43264 Removal of stone from bile or pancreatic duct using an endoscope	16	14	$2300.00	$339.52
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	15	15	$322.07	$215.88
43262 Incision of pancreatic outlet using a flexible endoscope	12	11	$2020.00	$38.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	391	280	$97.00	$78.45
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	218	191	$861.00	$124.75
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	215	210	$1313.00	$280.50
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	99	98	$152.00	$115.60
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	80	58	$108.00	$77.18
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	63	62	$50.00	$6.09
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	62	54	$751.00	$127.13
45380 Biopsy of large bowel using an endoscope	62	62	$1260.00	$153.94
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	61	61	$1050.00	$203.20
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	58	58	$254.00	$176.73
45378 Diagnostic exam of large bowel using a flexible endoscope	45	44	$1050.00	$192.54
91110 Imaging of digestive tract done from the inside of the digestive tract	27	27	$1695.00	$951.56
43249 Balloon dilation of esophagus using an endoscope	24	14	$1197.00	$159.78
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	23	23	$222.00	$145.09
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$175.00	$116.50
43264 Removal of stone from bile or pancreatic duct using an endoscope	17	13	$2300.00	$193.70
91065 Measurement of hydrogen in breath to test for stomach and bowel symptoms	15	15	$185.00	$80.30
43450 Dilation of esophagus	15	14	$226.00	$44.26
43274 Insertion of stent into pancreatic or bile duct using a flexible endoscope	14	11	$2271.00	$514.20
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	13	13	$303.00	$215.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	441	291	$97.00	$78.49
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	251	216	$861.00	$123.76
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	219	213	$1313.00	$282.03
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	189	176	$50.00	$6.07
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	124	114	$152.00	$115.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	65	65	$254.00	$175.62
45380 Biopsy of large bowel using an endoscope	58	58	$1260.00	$113.11
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	53	52	$1050.00	$194.55
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	53	51	$751.00	$123.95
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	42	30	$108.00	$76.26
45378 Diagnostic exam of large bowel using a flexible endoscope	37	37	$1050.00	$198.98
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$175.00	$116.55
91110 Imaging of digestive tract done from the inside of the digestive tract	25	25	$1695.00	$933.93
91065 Measurement of hydrogen in breath to test for stomach and bowel symptoms	20	18	$185.00	$82.86
43249 Balloon dilation of esophagus using an endoscope	12	11	$1197.00	$157.13
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	11	11	$303.00	$214.51

Medical Specialties & State Licenses

Specialist Primary Specialty

NUCC Taxonomy Code: 174400000X

State License CT 029845

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Hospital & Practice Group Affiliations

Connecticut Gi Pllc

85 Seymour St, Hartford, CT 061065529

Phone: 8602462571

Practice Associates & Co-Workers

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

11 Associated Practitioners

Daniel Stewart , PA

Physician Assistant - Medical

NPI 1013018969

Physician Assistant

Brian Clancy

Physician Assistant

NPI 1083151898

Adrian Ortega , PA-C

Physician Assistant - Medical

NPI 1124774120

Physician Assistant (Certified)

Dr. Emil Blanco , MD

Specialist

NPI 1134111040

Doctor of Medicine (M.D.)

Dr. Gena Cobrin , MD

Specialist

NPI 1205828126

Doctor of Medicine (M.D.)

Eddy Castillo

Specialist

NPI 1225020134

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active October 30, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location October 30, 2007

Registered at 425 POST RD, FAIRFIELD, CT 068246232 (Tel: 2032929000)

📍

Updated Business Mailing Address October 30, 2007

Registered at 425 POST RD, FAIRFIELD, CT 068246232 (Tel: 2032929000)

👤

Provider Name / Credentials Updated October 30, 2007

Recorded as KENNETH MAUER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 30, 2007

Specialist (License #029845 in CT)

🟢

Initial NPI Registration & Enumeration August 17, 2005

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: 1407848310

Entity Type:

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

Enumeration Date: August 17, 2005

Last Update: October 30, 2007

Sole Proprietor: No

Update or Correct Profile

Mailing Address

425 Post Rd

Fairfield, CT 068246232

Phone: 2032929000

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.