Active NPI 1174834097 Individual Practitioner Male Practitioner

Dr. Assar Ahmed Rather , MD

Colon & Rectal Surgery • Dover, DE

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Assar Rather, MD is a certified Colon & Rectal Surgery practicing in Dover, DE. With approximately 26 years of clinical experience since completing medical education in 2000, Dr. Rather delivers high-quality medical care to the local community at 724 S NEW ST.

Dr. Rather is affiliated with Bayhealth Medical Center, Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, 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

724 S New St

Dover, DE 199043540

Telephone 3026744070

Fax 3026722315

Associated Practice Facility / Clinic

🏢 Mattern & Associates, Md's, Pa Facility NPI 1073532990

Medicare Profile & Education

Medical School

Other

Graduation Year

2000

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Colon & Rectal Surgery in Dover, DE

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

26 Yrs Matches City Avg

City Avg: 26.0 Yrs

State Avg: 31.7 Yrs

Regional Practice Density

1 Specialists

Practicing in Dover, DE (9 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

75.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Rather (26 Years) 26 Yrs

Dover Specialty Average (26.0 Years) 26.0 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
99213 Established patient office or other outpatient visit, typically 15 minutes	64	59	$175.20	$89.04
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	62	62	$257.29	$108.03
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	50	44	$105.12	$55.51
45380 Biopsy of large bowel using an endoscope	42	42	$1118.12	$125.71
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	41	39	$256.39	$125.77
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	38	38	$1267.79	$244.62
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	34	23	$173.03	$76.71
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	29	29	$396.03	$160.23
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	19	19	$974.32	$77.64
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	16	16	$249.50	$127.19
45378 Diagnostic exam of large bowel using a flexible endoscope	13	13	$716.54	$154.11
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	12	12	$715.42	$163.13
99221 Initial hospital inpatient care per day, typically 30 minutes	11	11	$189.18	$80.59

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	93	76	$167.15	$91.08
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	63	63	$247.06	$111.76
45380 Biopsy of large bowel using an endoscope	39	39	$1076.51	$157.25
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	38	36	$100.97	$57.10
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	29	25	$246.59	$128.79
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	29	15	$167.31	$79.43
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	25	$240.33	$128.03
99231 Follow-up hospital inpatient care per day, typically 15 minutes	24	11	$90.50	$49.85
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	20	20	$1218.00	$252.51
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	20	20	$36.00	$23.50
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	19	19	$938.11	$90.57
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$378.68	$166.54
45378 Diagnostic exam of large bowel using a flexible endoscope	15	15	$686.60	$177.54
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	13	13	$683.69	$183.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	133	121	$36.00	$23.84
99213 Established patient office or other outpatient visit, typically 15 minutes	59	53	$165.00	$93.19
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	51	51	$243.00	$115.14
45380 Biopsy of large bowel using an endoscope	36	36	$1056.00	$152.14
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	34	32	$243.00	$128.00
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$373.00	$171.48
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	23	15	$163.00	$72.05
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	22	19	$99.00	$58.10
45378 Diagnostic exam of large bowel using a flexible endoscope	17	17	$674.00	$180.02
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	17	17	$916.00	$91.94
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	13	13	$1191.00	$260.36
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	11	11	$674.00	$162.71
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	11	11	$235.00	$135.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	93	93	$243.00	$115.13
99213 Established patient office or other outpatient visit, typically 15 minutes	86	72	$165.00	$94.44
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	60	51	$99.00	$58.12
45380 Biopsy of large bowel using an endoscope	46	46	$1056.00	$165.85
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	43	25	$163.00	$73.14
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	35	$243.00	$131.21
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	32	32	$373.00	$168.80
99231 Follow-up hospital inpatient care per day, typically 15 minutes	25	16	$89.00	$39.08
45378 Diagnostic exam of large bowel using a flexible endoscope	23	23	$674.00	$180.13
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	19	19	$235.00	$138.45
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	15	15	$1191.00	$262.32
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	14	14	$916.00	$96.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	100	100	$239.40	$111.83
99213 Established patient office or other outpatient visit, typically 15 minutes	81	73	$162.90	$77.91
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	54	51	$97.89	$47.31
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	41	$239.47	$112.86
45380 Biopsy of large bowel using an endoscope	33	33	$1039.09	$159.42
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	30	17	$160.83	$75.02
99231 Follow-up hospital inpatient care per day, typically 15 minutes	27	19	$87.78	$40.79
45378 Diagnostic exam of large bowel using a flexible endoscope	20	20	$663.00	$177.40
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$232.53	$143.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$366.81	$170.73
99441 Telephone medical discussion with physician, 5-10 minutes	14	14	$66.21	$41.58
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	11	$902.50	$110.19

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	120	120	$230.33	$108.64
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	102	90	$93.76	$46.17
99213 Established patient office or other outpatient visit, typically 15 minutes	93	87	$156.58	$75.68
45380 Biopsy of large bowel using an endoscope	44	44	$1004.32	$173.60
99231 Follow-up hospital inpatient care per day, typically 15 minutes	42	19	$84.00	$40.47
45378 Diagnostic exam of large bowel using a flexible endoscope	25	25	$641.12	$173.87
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	24	23	$1131.00	$272.63
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	22	16	$155.82	$74.71
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	21	21	$230.05	$111.60
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	15	15	$224.80	$140.75
45381 Injection beneath lining of large bowel using a flexible endoscope	15	15	$765.80	$16.73
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	13	13	$862.77	$108.35
45330 Diagnostic exam of lower portion of large bowel using a flexible endoscope	12	11	$273.33	$49.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	120	120	$227.00	$109.27
99213 Established patient office or other outpatient visit, typically 15 minutes	99	91	$154.00	$72.89
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	78	29	$152.00	$72.43
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	73	65	$92.00	$44.71
45380 Biopsy of large bowel using an endoscope	33	32	$990.00	$166.21
99231 Follow-up hospital inpatient care per day, typically 15 minutes	28	15	$83.00	$39.96
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	24	24	$227.00	$109.45
45378 Diagnostic exam of large bowel using a flexible endoscope	21	21	$631.00	$187.56
45330 Diagnostic exam of lower portion of large bowel using a flexible endoscope	17	13	$270.00	$47.13
99221 Initial hospital inpatient care per day, typically 30 minutes	15	15	$163.00	$103.46
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	13	13	$220.00	$139.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	143	117	$154.00	$73.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	127	127	$227.00	$109.48
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	111	92	$92.00	$44.04
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	66	34	$152.00	$73.39
99231 Follow-up hospital inpatient care per day, typically 15 minutes	48	29	$83.00	$39.94
99221 Initial hospital inpatient care per day, typically 30 minutes	37	37	$163.00	$101.27
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	33	$227.00	$106.21
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	27	$220.00	$139.44
45380 Biopsy of large bowel using an endoscope	26	26	$990.00	$167.05
45378 Diagnostic exam of large bowel using a flexible endoscope	19	19	$631.00	$186.45
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	12	12	$32.00	$20.60
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$157.00	$76.35
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	11	11	$1116.00	$270.07

Medical Specialties & State Licenses

CMS Verified: 2024-10-29

Colon & Rectal Surgery Primary Specialty

NUCC Taxonomy Code: 208C00000X

State License DE C1-0009722

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Surgery

NUCC Taxonomy Code: 208600000X

State License DE C1-0009722

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.

Hospital & Practice Group Affiliations

Bayhealth Medical Center, Inc

724 S New St, Dover, DE 199043540

Phone: 3026744070

Practice Associates & Co-Workers

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

14 Associated Practitioners

Dr. John Glenn , MD

Surgery

NPI 1033184841

Doctor of Medicine (M.D.)

Dr. Jerome Lee , MD

Surgery

NPI 1114663374

Doctor of Medicine (M.D.)

Dr. Nessreen Ghanem , DO

Surgery

NPI 1164168050

Doctor of Osteopathic Medicine (D.O.)

Carole Dye , NP-C

Nurse Practitioner

NPI 1184217432

Nurse Practitioner (Certified)

Dr. Theodoros Katsichtis , MD

Surgery

NPI 1275875528

Doctor of Medicine (M.D.)

Dr. Krishnaraj Mahendraraj , MD

Surgery

NPI 1295093946

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

12 Historical Events

📍

Updated Business Mailing Address December 29, 2021

Registered at 640 S STATE ST, MAIL CODE 3055, DOVER, DE 199013530 (Tel: 3024801688)

✅

NPI Profile Active January 18, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location January 18, 2017

Registered at 724 S NEW ST, DOVER, DE 199043540 (Tel: 3026744070)

📍

Updated Business Mailing Address January 18, 2017

Registered at 640 S STATE ST, POB 3RD FLOOR, DOVER, DE 199013530 (Tel: 3024801688)

👤

Provider Name / Credentials Updated January 18, 2017

Recorded as ASSAR RATHER, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 18, 2017

Surgery (License #C1-0009722 in DE)

✅

NPI Profile Active April 27, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location April 27, 2016

Registered at 819 S GOVERNORS AVE, DOVER, DE 199044158 (Tel: 3026744070)

📍

Updated Business Mailing Address April 27, 2016

Registered at 640 S STATE ST, ADMIN OFFICE 742 BUILDING, DOVER, DE 199013530 (Tel: 3026743970)

👤

Provider Name / Credentials Updated April 27, 2016

Recorded as ASSAR RATHER, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 27, 2016

Surgery (License #C1-0009722 in DE)

🟢

Initial NPI Registration & Enumeration June 25, 2010

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1174834097

Entity Type:

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

Enumeration Date: June 25, 2010

Last Update: November 01, 2024

Sole Proprietor: No

Update or Correct Profile

Mailing Address

640 S State St, Mail Code 3055

Dover, DE 199013530

Phone: 3026744070

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.