Active NPI 1467410308 Individual Practitioner Male Practitioner

Dr. Peter J Weinstein , MD

Internal Medicine - Gastroenterology • Springfield, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Peter Weinstein, MD is a certified Internal Medicine - Gastroenterology practicing in Springfield, MA. With approximately 34 years of clinical experience since graduating from Columbia University College Of Physicians And Surgeons in 1992, Dr. Weinstein delivers high-quality medical care to the local community at 299 CAREW ST.

Dr. Weinstein is affiliated with Riverbend Medical Group Inc 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, biopsy of large bowel using an endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

299 Carew St
Ste 419

Springfield, MA 011042301

Telephone 4137377951

Associated Practice Facility / Clinic

🏢 Dr. James Haines & Dr. William Belcastro, Ptr. Facility NPI 1124027834

Medicare Profile & Education

Medical School

Columbia University College Of Physicians And Surgeons

Graduation Year

1992

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine - Gastroenterology in Springfield, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

34 Yrs +11.5 yrs vs City Avg

City Avg: 22.5 Yrs

State Avg: 28.3 Yrs

Regional Practice Density

19 Specialists

Practicing in Springfield, MA (719 Statewide)

Telehealth Adoption Rate

36.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

77.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Weinstein (34 Years) 34 Yrs

Springfield Specialty Average (22.5 Years) 22.5 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	221	220	$1416.48	$245.87
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	135	130	$905.44	$81.44
45380 Biopsy of large bowel using an endoscope	93	93	$1240.13	$122.37
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	89	79	$300.00	$129.59
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	77	77	$797.55	$177.49
99213 Established patient office or other outpatient visit, typically 15 minutes	69	65	$200.00	$91.98
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	39	39	$400.00	$168.32
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	38	38	$772.16	$174.19
43249 Balloon dilation of esophagus using an endoscope	34	31	$1779.47	$130.66
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	27	27	$827.33	$80.47
91110 Imaging of digestive tract done from the inside of the digestive tract	19	19	$1693.00	$756.60
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	17	17	$400.00	$170.97
43262 Incision of pancreatic outlet using a flexible endoscope	15	15	$872.00	$200.81
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$297.86	$128.50
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$260.00	$112.83
45378 Diagnostic exam of large bowel using a flexible endoscope	13	13	$1049.54	$170.36

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	184	184	$1551.00	$251.28
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	143	142	$976.00	$85.12
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	120	108	$300.00	$129.80
45380 Biopsy of large bowel using an endoscope	117	116	$1384.00	$123.75
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	71	71	$832.00	$182.09
99213 Established patient office or other outpatient visit, typically 15 minutes	68	63	$200.00	$92.41
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	53	53	$400.00	$169.58
43249 Balloon dilation of esophagus using an endoscope	34	33	$2080.00	$128.53
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	32	32	$832.00	$183.65
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	31	30	$400.00	$174.85
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	27	27	$893.00	$104.39
91110 Imaging of digestive tract done from the inside of the digestive tract	19	19	$1693.00	$786.45
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$260.00	$114.36
45378 Diagnostic exam of large bowel using a flexible endoscope	16	16	$1158.00	$166.87
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	13	12	$350.00	$182.72
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$424.00	$223.61
74328 Radiological supervision and interpretation of insertion of catheter into biliary duct using an endoscope	11	11	$93.00	$23.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	155	155	$1684.00	$255.27
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	125	121	$1099.00	$94.13
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	111	94	$320.00	$132.34
45380 Biopsy of large bowel using an endoscope	101	101	$1498.00	$143.97
99213 Established patient office or other outpatient visit, typically 15 minutes	87	83	$216.00	$93.70
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	81	81	$1253.00	$180.68
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	50	50	$493.00	$173.12
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	31	31	$949.00	$103.86
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	29	29	$1253.00	$189.33
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	27	25	$430.00	$180.98
43249 Balloon dilation of esophagus using an endoscope	23	20	$3000.00	$147.38
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	21	20	$595.00	$201.81
91110 Imaging of digestive tract done from the inside of the digestive tract	17	17	$2997.00	$844.82
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$322.00	$116.82
45378 Diagnostic exam of large bowel using a flexible endoscope	13	13	$1253.00	$189.35
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$612.00	$228.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	158	157	$1684.00	$258.71
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	101	97	$1099.00	$87.92
45380 Biopsy of large bowel using an endoscope	94	94	$1498.00	$100.70
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	81	75	$320.00	$133.43
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	72	72	$1253.00	$187.44
99213 Established patient office or other outpatient visit, typically 15 minutes	60	58	$216.00	$94.73
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	59	59	$493.00	$173.07
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	34	34	$949.00	$93.90
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	29	29	$1253.00	$179.76
43249 Balloon dilation of esophagus using an endoscope	29	28	$3000.00	$135.05
99442 Telephone medical discussion with physician, 11-20 minutes	26	26	$216.00	$96.05
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	24	23	$595.00	$205.65
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	19	19	$612.00	$220.81
91110 Imaging of digestive tract done from the inside of the digestive tract	16	16	$2997.00	$935.80
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$322.00	$112.12
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	15	14	$430.00	$189.34
45378 Diagnostic exam of large bowel using a flexible endoscope	12	12	$1253.00	$184.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	98	98	$1684.00	$264.26
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	78	76	$1099.00	$100.44
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	70	70	$493.00	$168.95
99213 Established patient office or other outpatient visit, typically 15 minutes	68	62	$216.00	$78.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	65	57	$320.00	$113.10
45380 Biopsy of large bowel using an endoscope	53	53	$1498.00	$154.54
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	51	51	$1253.00	$186.49
99442 Telephone medical discussion with physician, 11-20 minutes	34	32	$173.50	$78.79
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	22	22	$949.00	$110.59
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$322.00	$113.47
43249 Balloon dilation of esophagus using an endoscope	21	15	$3000.00	$155.81
99441 Telephone medical discussion with physician, 5-10 minutes	19	19	$91.63	$47.96
91110 Imaging of digestive tract done from the inside of the digestive tract	17	17	$2997.00	$924.86
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	16	15	$595.00	$211.57
99231 Follow-up hospital inpatient care per day, typically 15 minutes	16	13	$118.00	$41.09
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	11	11	$1253.00	$184.26

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	107	104	$1684.00	$274.35
99213 Established patient office or other outpatient visit, typically 15 minutes	92	80	$216.00	$77.14
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	81	71	$320.00	$113.53
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	79	76	$1099.00	$93.64
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	75	75	$493.00	$168.59
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	73	73	$1253.00	$191.18
45380 Biopsy of large bowel using an endoscope	70	70	$1498.00	$159.26
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	28	28	$949.00	$97.37
45378 Diagnostic exam of large bowel using a flexible endoscope	19	19	$1253.00	$180.81
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	19	19	$1253.00	$193.13
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$322.00	$113.32
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	17	$430.00	$145.45
43249 Balloon dilation of esophagus using an endoscope	17	17	$3000.00	$146.16
91110 Imaging of digestive tract done from the inside of the digestive tract	14	14	$2997.00	$870.30
99231 Follow-up hospital inpatient care per day, typically 15 minutes	14	13	$118.00	$40.72
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	13	13	$595.00	$209.19
45381 Injection beneath lining of large bowel using a flexible endoscope	12	12	$1460.00	$16.91
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	12	12	$612.00	$214.95

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	102	83	$320.00	$108.69
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	86	84	$1684.00	$270.33
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	79	75	$1099.00	$110.96
99213 Established patient office or other outpatient visit, typically 15 minutes	77	70	$216.00	$74.02
45380 Biopsy of large bowel using an endoscope	76	76	$1498.00	$148.13
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	53	53	$493.00	$167.01
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	49	49	$1253.00	$178.15
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	43	43	$949.00	$109.52
99231 Follow-up hospital inpatient care per day, typically 15 minutes	33	24	$118.00	$39.46
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	26	24	$595.00	$204.19
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	20	20	$1253.00	$183.63
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$322.00	$109.99
45378 Diagnostic exam of large bowel using a flexible endoscope	15	14	$1253.00	$174.75
91110 Imaging of digestive tract done from the inside of the digestive tract	14	14	$2997.00	$893.00
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	13	13	$612.00	$209.30
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	11	11	$405.00	$137.62

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	93	87	$1099.00	$96.34
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	82	79	$1684.00	$259.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	77	61	$320.00	$105.84
99213 Established patient office or other outpatient visit, typically 15 minutes	77	69	$216.00	$72.81
45380 Biopsy of large bowel using an endoscope	69	69	$1498.00	$161.04
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	60	60	$493.00	$161.51
99231 Follow-up hospital inpatient care per day, typically 15 minutes	44	31	$118.00	$38.86
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	40	40	$949.00	$104.69
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	32	32	$1253.00	$177.87
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	24	24	$595.00	$200.82
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	24	24	$1253.00	$171.36
43249 Balloon dilation of esophagus using an endoscope	21	18	$3000.00	$136.95
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	19	19	$322.00	$108.43
45378 Diagnostic exam of large bowel using a flexible endoscope	18	17	$1253.00	$176.73
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	18	18	$405.00	$135.52
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	14	12	$213.00	$71.58

Medical Specialties & State Licenses

Internal Medicine - Gastroenterology Primary Specialty

NUCC Taxonomy Code: 207RG0100X

State License MA 159667

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.

Hospital & Practice Group Affiliations

Riverbend Medical Group Inc

299 Carew St, Springfield, MA 011042361

Phone: 4137377951

Practice Associates & Co-Workers

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

7 Associated Practitioners

Dr. Douglas Hyde , MD

Internal Medicine - Gastroenterology

NPI 1164520169

Doctor of Medicine (M.D.)

Dr. Kenneth Koenigs , MD

Internal Medicine

NPI 1194808378

Doctor of Medicine (M.D.)

Dorothy Sassi , NP

Nurse Practitioner

NPI 1356389043

Nurse Practitioner

Mary-Laura Hohol , PA-C

Physician Assistant

NPI 1407165020

Physician Assistant (Certified)

Grace Skinner , PA-C

Physician Assistant

NPI 1457037632

Physician Assistant (Certified)

Dr. Barry Slitzky , MD

Internal Medicine - Gastroenterology

NPI 1639263726

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 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 299 CAREW ST, STE 419, SPRINGFIELD, MA 011042301 (Tel: 4137377951)

📍

Updated Business Mailing Address July 08, 2007

Registered at 299 CAREW ST, STE 419, SPRINGFIELD, MA 011042301 (Tel: 4137377951)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as PETER WEINSTEIN, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine (License #159667 in MA)

🟢

Initial NPI Registration & Enumeration May 02, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1467410308

Entity Type:

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

Enumeration Date: May 02, 2006

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

299 Carew St, Ste 419

Springfield, MA 011042301

Phone: 4137377951

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.