Active NPI 1861416596 Individual Practitioner Male Practitioner

Dr. Gregory Mathias Lam , DO

Internal Medicine - Gastroenterology • Cincinnati, OH

✓ Accepts Medicare Assignment

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Lam, DO is a registered Internal Medicine - Gastroenterology practitioner in Cincinnati, OH. With approximately 23 years of clinical practice since completing medical education in 2003, Dr. Lam provides healthcare services at the registered practice location at 7661 BEECHMONT AVE STE 120.

Dr. Lam is affiliated with Greater Cincinnati Digestive Health Network 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, subsequent hospital care with moderate levelof medical decision making, if using time, at least, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

7661 Beechmont Ave Ste 120

Cincinnati, OH 452554234

Telephone 5132319010

Fax 5132319706

Associated Practice Facility / Clinic

🏢 Forest Hills Medical Associates Ltd Facility NPI 1902961246

Medicare Profile & Education

Medical School

Other

Graduation Year

2003

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine - Gastroenterology in Cincinnati, OH

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

23 Yrs -3.7 yrs vs City Avg

City Avg: 26.7 Yrs

State Avg: 27.4 Yrs

Regional Practice Density

100 Specialists

Practicing in Cincinnati, OH (766 Statewide)

Telehealth Adoption Rate

19.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

75.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Lam (23 Years) 23 Yrs

Cincinnati Specialty Average (26.7 Years) 26.7 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	160	157	$1010.00	$230.52
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	124	82	$120.00	$73.63
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	124	118	$580.00	$111.06
99213 Established patient office or other outpatient visit, typically 15 minutes	62	54	$130.00	$82.63
43450 Dilation of esophagus	43	43	$175.00	$37.46
45380 Biopsy of large bowel using an endoscope	40	40	$785.00	$88.63
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	33	$305.00	$163.83
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	20	20	$500.00	$108.46
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	16	16	$715.00	$167.43
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	15	15	$1315.00	$237.90
43274 Insertion of stent into pancreatic or bile duct using a flexible endoscope	15	12	$1270.00	$379.71
45378 Diagnostic exam of large bowel using a flexible endoscope	13	13	$715.00	$166.36
45390 Removal of large bowel tissue using an endoscope	13	11	$850.00	$311.02
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$170.00	$104.84
43264 Removal of stone from bile or pancreatic duct using an endoscope	12	11	$1430.00	$160.32
43259 Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope	11	11	$775.00	$201.73

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	133	132	$1010.00	$232.82
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	108	105	$580.00	$105.94
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	104	69	$120.00	$76.44
99213 Established patient office or other outpatient visit, typically 15 minutes	98	80	$130.00	$85.27
45380 Biopsy of large bowel using an endoscope	37	36	$785.00	$108.28
43450 Dilation of esophagus	35	35	$175.00	$38.23
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	33	33	$170.00	$106.92
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	21	21	$500.00	$114.23
99221 Initial hospital inpatient care per day, typically 30 minutes	21	21	$145.00	$80.56
43264 Removal of stone from bile or pancreatic duct using an endoscope	18	17	$1430.00	$142.33
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	17	16	$1315.00	$251.12
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	17	17	$715.00	$170.62
45378 Diagnostic exam of large bowel using a flexible endoscope	17	16	$715.00	$137.84
43274 Insertion of stent into pancreatic or bile duct using a flexible endoscope	16	16	$1270.00	$441.50
43259 Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope	13	13	$775.00	$198.26
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	12	12	$715.00	$146.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	186	97	$120.00	$69.25
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	105	104	$1010.00	$239.68
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	101	99	$580.00	$113.26
99213 Established patient office or other outpatient visit, typically 15 minutes	90	71	$130.00	$85.59
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	67	67	$170.00	$108.09
99221 Initial hospital inpatient care per day, typically 30 minutes	59	55	$145.00	$98.17
43450 Dilation of esophagus	28	27	$175.00	$37.50
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	26	25	$715.00	$167.37
45380 Biopsy of large bowel using an endoscope	22	22	$785.00	$134.73
43259 Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope	18	18	$775.00	$195.96
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	16	16	$500.00	$92.08
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	16	15	$715.00	$168.88
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	15	15	$1315.00	$249.01
45378 Diagnostic exam of large bowel using a flexible endoscope	14	13	$715.00	$145.62
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	11	11	$40.00	$21.88
91200 Measurement of liver stiffness	11	11	$75.00	$29.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	269	150	$120.00	$70.48
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	106	98	$580.00	$101.39
99213 Established patient office or other outpatient visit, typically 15 minutes	86	71	$130.00	$86.56
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	79	76	$215.76	$133.49
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	78	76	$1010.00	$241.78
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	36	36	$170.00	$109.66
45380 Biopsy of large bowel using an endoscope	33	33	$785.00	$110.37
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$260.00	$163.59
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	30	30	$1315.00	$238.82
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	28	27	$500.00	$108.62
43450 Dilation of esophagus	21	20	$175.00	$39.21
45378 Diagnostic exam of large bowel using a flexible endoscope	20	18	$715.00	$168.35
43259 Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope	17	17	$775.00	$211.09
99221 Initial hospital inpatient care per day, typically 30 minutes	16	16	$145.00	$99.48
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	14	14	$305.00	$184.76
43274 Insertion of stent into pancreatic or bile duct using a flexible endoscope	12	11	$1270.00	$460.67
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	11	11	$75.00	$54.37
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	11	11	$715.00	$176.48
43246 Insertion of stomach tube using a flexible endoscope	11	11	$1000.00	$199.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	358	158	$120.00	$72.45
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	105	98	$216.14	$138.54
99213 Established patient office or other outpatient visit, typically 15 minutes	97	80	$130.00	$72.60
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	85	75	$580.00	$99.25
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	44	43	$1010.00	$252.65
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	37	37	$260.00	$159.74
45380 Biopsy of large bowel using an endoscope	27	27	$785.00	$120.99
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	26	22	$500.00	$115.79
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	25	23	$1315.00	$252.39
43450 Dilation of esophagus	23	23	$175.00	$40.06
43246 Insertion of stomach tube using a flexible endoscope	16	12	$1000.00	$206.41
45378 Diagnostic exam of large bowel using a flexible endoscope	16	16	$715.00	$163.51
43264 Removal of stone from bile or pancreatic duct using an endoscope	16	13	$1430.00	$145.75
99221 Initial hospital inpatient care per day, typically 30 minutes	13	13	$153.85	$102.05
43262 Incision of pancreatic outlet using a flexible endoscope	13	13	$1315.00	$86.47
43274 Insertion of stent into pancreatic or bile duct using a flexible endoscope	12	11	$1270.00	$475.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	262	148	$120.00	$72.00
99213 Established patient office or other outpatient visit, typically 15 minutes	119	98	$130.00	$71.98
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	108	100	$580.00	$109.45
99221 Initial hospital inpatient care per day, typically 30 minutes	75	72	$145.00	$100.54
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	72	70	$1010.00	$232.48
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	48	48	$170.00	$105.21
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	40	39	$75.00	$42.44
45380 Biopsy of large bowel using an endoscope	38	38	$785.00	$100.85
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	31	30	$75.00	$5.63
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	31	29	$1315.00	$254.59
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	26	$215.00	$131.89
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	26	25	$500.00	$117.86
45378 Diagnostic exam of large bowel using a flexible endoscope	25	24	$715.00	$166.67
43450 Dilation of esophagus	24	23	$175.00	$40.24
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	17	16	$715.00	$169.75
45390 Removal of large bowel tissue using an endoscope	15	14	$850.00	$341.41
43259 Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope	14	14	$775.00	$213.86
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$260.00	$147.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	250	137	$117.18	$69.15
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	126	122	$36.13	$5.45
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	106	105	$594.91	$86.92
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	91	88	$221.22	$130.46
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	86	85	$889.07	$225.89
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	76	69	$169.76	$98.74
45380 Biopsy of large bowel using an endoscope	59	59	$717.20	$106.75
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	33	33	$75.00	$40.67
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	27	27	$411.11	$114.48
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	27	27	$264.11	$155.94
43450 Dilation of esophagus	23	23	$192.39	$39.20
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	21	21	$1086.10	$245.29
45378 Diagnostic exam of large bowel using a flexible endoscope	20	20	$600.25	$145.66
45390 Removal of large bowel tissue using an endoscope	18	16	$837.33	$332.35
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	17	17	$626.29	$177.59
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	17	17	$306.18	$198.47
99213 Established patient office or other outpatient visit, typically 15 minutes	17	16	$128.12	$69.90
43259 Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope	15	14	$621.00	$201.45
99221 Initial hospital inpatient care per day, typically 30 minutes	15	15	$154.93	$99.16
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	13	13	$781.00	$181.74
43264 Removal of stone from bile or pancreatic duct using an endoscope	13	13	$1165.38	$339.44
43262 Incision of pancreatic outlet using a flexible endoscope	13	13	$1004.23	$59.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	252	144	$116.00	$68.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	115	96	$168.00	$99.57
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	108	106	$221.00	$130.68
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	90	89	$803.00	$80.83
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	74	74	$13.00	$5.36
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	56	56	$1042.00	$237.98
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	44	44	$262.91	$145.92
45380 Biopsy of large bowel using an endoscope	41	41	$922.00	$81.89
43450 Dilation of esophagus	29	29	$200.00	$38.64
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	28	28	$631.00	$111.55
43242 Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	22	20	$878.00	$258.41
99221 Initial hospital inpatient care per day, typically 30 minutes	19	19	$162.00	$96.73
74328 Radiological supervision and interpretation of insertion of catheter into biliary duct using an endoscope	17	17	$75.00	$32.88
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	16	16	$599.00	$166.59
43259 Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope	12	12	$825.00	$188.50
43248 Insertion of guide wire with dilation of esophagus using a flexible endoscope	12	12	$381.00	$97.48
45378 Diagnostic exam of large bowel using a flexible endoscope	12	12	$460.00	$155.04
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	11	11	$762.73	$167.84

Medical Specialties & State Licenses

Internal Medicine - Gastroenterology Primary Specialty

NUCC Taxonomy Code: 207RG0100X

State License OH 34.013404

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Internal Medicine - Gastroenterology

NUCC Taxonomy Code: 207RG0100X

State License KY 03484

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

0070048 (OH)

Medicaid State Provider ID

7100213520 (KY)

Hospital & Practice Group Affiliations

Greater Cincinnati Digestive Health Network

1955 Dixie Hwy, Ft Wright, KY 410112892

Phone: 5132334100

Greater Cincinnati Digestive Health Network

2055 Hospital Dr, Batavia, OH 451031981

Phone: 5137350200

Practice Associates & Co-Workers

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

11 Associated Practitioners

Emily Sizer , PHYSICIAN ASSISTANT

Physician Assistant

NPI 1164170064

PHYSICIANASSISTANT

Dr. Stephen Ionna , MD

Internal Medicine - Gastroenterology

NPI 1174527659

Doctor of Medicine (M.D.)

Shannon Horvath , NP-C

Internal Medicine - Gastroenterology

NPI 1265820658

Nurse Practitioner (Certified)

Dr. Said Nabhan , MD

Internal Medicine - Gastroenterology

NPI 1407851843

Doctor of Medicine (M.D.)

Dr. Robert Krone , MD

Internal Medicine - Gastroenterology

NPI 1588668073

Doctor of Medicine (M.D.)

Hanna Kremer , CNP

Nurse Practitioner

NPI 1649758871

Certified Nurse Practitioner

Career & Practice History Timeline

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

15 Historical Events

📍

Updated Practice Location November 18, 2019

Registered at 7661 BEECHMONT AVE STE 120, CINCINNATI, OH 452554234 (Tel: 5132319010)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 18, 2019

Internal Medicine (License #34.013404 in OH)

📍

Updated Practice Location August 31, 2018

Registered at 651 CENTRE VIEW BLVD, CRESTVIEW HILLS, KY 41017 (Tel: 8593316466)

📍

Updated Business Mailing Address August 31, 2018

Registered at PO BOX 635283, CINCINNATI, OH 452635283

✅

NPI Profile Active August 30, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location August 30, 2017

Registered at 651 CENTRE VIEW BLVD, CRESTVIEW HILLS, KY 410175419 (Tel: 8593316466)

📍

Updated Business Mailing Address August 30, 2017

Registered at 2300 CHAMBER CENTER DR, LAKESIDE PARK, KY 410171686 (Tel: (859) 331-6466)

👤

Provider Name / Credentials Updated August 30, 2017

Recorded as GREGORY LAM, D.O.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 30, 2017

Internal Medicine (License #03484 in KY)

✅

NPI Profile Active September 25, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location September 25, 2015

Registered at 340 THOMAS MORE PKWY, SUITE 160A, CRESTVIEW HILLS, KY 410175100 (Tel: 8593316466)

📍

Updated Business Mailing Address September 25, 2015

Registered at 340 THOMAS MORE PKWY, STE 160A, CRESTVIEW HILLS, KY 410175100 (Tel: 8593316466)

👤

Provider Name / Credentials Updated September 25, 2015

Recorded as GREGORY LAM, D.O.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 25, 2015

Internal Medicine (License #03484 in KY)

🟢

Initial NPI Registration & Enumeration July 26, 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: 1861416596

Entity Type:

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

Enumeration Date: July 26, 2006

Last Update: November 18, 2019

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 635283

Cincinnati, OH 452635283

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.