Active NPI 1649201849 Individual Practitioner Female Practitioner

Dr. Katherine Sahm , MD

Surgery • Wilmington, DE

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Katherine Sahm, MD is a certified Surgery practicing in Wilmington, DE. With approximately 26 years of clinical experience since graduating from Jefferson Medical College Of Thomas Jefferson University in 2000, Dr. Sahm delivers high-quality medical care to the local community at 1100 N GRANT AVE.

Dr. Sahm is affiliated with Christiana Care Health Services Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with straightforward or low-level medical decision making, if using time, at least, 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

1100 N Grant Ave
2nd Floor

Wilmington, DE 198052671

Telephone 3024214100

Fax 3024214100

Associated Practice Facility / Clinic

🏢 St. Francis Hospital Inc. Facility NPI 1700885928

Medicare Profile & Education

Medical School

Jefferson Medical College Of Thomas Jefferson University

Graduation Year

2000

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Wilmington, DE

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

26 Yrs -2.7 yrs vs City Avg

City Avg: 28.7 Yrs

State Avg: 23.3 Yrs

Regional Practice Density

24 Specialists

Practicing in Wilmington, DE (115 Statewide)

Telehealth Adoption Rate

8.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

68.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Sahm (26 Years) 26 Yrs

Wilmington Specialty Average (28.7 Years) 28.7 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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	60	46	$232.41	$76.44
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	41	41	$483.36	$126.79
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	41	34	$350.44	$125.93
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	29	29	$636.45	$168.22
99213 Established patient office or other outpatient visit, typically 15 minutes	25	22	$250.14	$87.95
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$517.20	$163.61
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	18	15	$329.89	$115.36
99221 Initial hospital inpatient care per day, typically 30 minutes	16	16	$354.59	$80.09
47562 Removal of gallbladder using an endoscope	12	12	$1726.80	$660.19
45380 Biopsy of large bowel using an endoscope	11	11	$688.79	$160.78

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	36	30	$241.00	$91.07
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	32	32	$462.30	$126.86
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	30	23	$228.00	$79.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	22	$327.60	$128.81
99221 Initial hospital inpatient care per day, typically 30 minutes	18	18	$342.49	$83.39
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	15	15	$317.32	$108.22
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$483.25	$167.82
99231 Follow-up hospital inpatient care per day, typically 15 minutes	13	11	$120.76	$49.85
47562 Removal of gallbladder using an endoscope	13	13	$1612.97	$667.22
45380 Biopsy of large bowel using an endoscope	12	12	$659.40	$169.06

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	59	46	$172.42	$71.92
99213 Established patient office or other outpatient visit, typically 15 minutes	55	37	$161.47	$93.34
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	40	39	$327.13	$136.71
99231 Follow-up hospital inpatient care per day, typically 15 minutes	30	24	$94.73	$39.07
99221 Initial hospital inpatient care per day, typically 30 minutes	26	26	$263.35	$101.47
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$206.57	$115.42
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	16	$102.92	$58.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	18	$211.28	$131.74

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	49	34	$161.25	$73.20
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	40	40	$322.18	$138.46
99213 Established patient office or other outpatient visit, typically 15 minutes	37	29	$127.48	$94.48
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	30	19	$82.89	$58.21
99221 Initial hospital inpatient care per day, typically 30 minutes	22	22	$250.05	$102.75
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	19	16	$185.00	$133.82
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$186.20	$115.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	75	50	$142.29	$77.70
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	14	$92.69	$47.37
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$208.62	$112.11
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	12	12	$202.12	$112.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	161	72	$111.89	$74.51
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	107	37	$110.00	$71.49
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	43	21	$81.19	$43.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	39	33	$159.77	$106.67
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	38	38	$250.00	$198.89
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	36	20	$77.15	$46.13
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$176.50	$109.22
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	22	13	$122.27	$68.35
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	21	21	$267.14	$164.48
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	21	12	$145.00	$102.58
11042 Removal of skin and tissue, 20.0 sq cm or less	20	11	$145.52	$60.20
31502 Change of breathing tube of windpipe in neck	17	12	$108.00	$34.71
45378 Diagnostic exam of large bowel using a flexible endoscope	15	15	$508.93	$196.35
99304 Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes	15	14	$165.60	$90.99
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$200.00	$134.69
47562 Removal of gallbladder using an endoscope	13	13	$1216.15	$683.64
99238 Hospital discharge day management, 30 minutes or less	11	11	$205.00	$71.85

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	143	55	$110.00	$69.97
99213 Established patient office or other outpatient visit, typically 15 minutes	98	41	$95.00	$70.06
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	87	34	$75.00	$42.77
11042 Removal of skin and tissue, 20.0 sq cm or less	61	18	$150.00	$112.51
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	59	56	$250.00	$195.07
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	39	21	$145.00	$100.09
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	34	25	$120.00	$66.52
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	34	29	$145.00	$103.40
11042 Removal of skin and tissue, 20.0 sq cm or less	30	20	$150.00	$59.57
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	25	$200.00	$127.67
31502 Change of breathing tube of windpipe in neck	24	14	$110.00	$33.34
99304 Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes	23	22	$120.00	$87.72
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	21	21	$185.00	$125.16
47562 Removal of gallbladder using an endoscope	19	19	$1100.00	$624.62
99238 Hospital discharge day management, 30 minutes or less	18	17	$205.00	$70.35
43760 Change of stomach feeding, accessed through the skin	18	13	$75.00	$46.43
99284 Emergency department visit with moderate level of medical decision making	16	16	$185.00	$112.82
45380 Biopsy of large bowel using an endoscope	15	15	$700.00	$90.09
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$250.00	$158.05
17250 Application of chemical to stop tissue regrowth in wound	12	11	$120.00	$33.46

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	111	43	$110.00	$68.61
99307 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes	98	25	$75.00	$42.43
99213 Established patient office or other outpatient visit, typically 15 minutes	93	39	$95.00	$69.63
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	63	60	$250.00	$193.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	42	36	$145.00	$102.48
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	38	17	$120.00	$65.84
97597 Removal of tissue from wound, 20.0 sq cm or less	37	11	$100.00	$70.26
11042 Removal of skin and tissue, 20.0 sq cm or less	36	13	$150.00	$109.91
11042 Removal of skin and tissue, 20.0 sq cm or less	34	19	$150.00	$54.62
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	29	11	$65.00	$41.51
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	27	17	$145.00	$99.25
99284 Emergency department visit with moderate level of medical decision making	23	23	$185.00	$107.47
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	16	16	$185.00	$124.08
45380 Biopsy of large bowel using an endoscope	16	16	$700.00	$176.25
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	16	15	$200.00	$123.63
15273 Skin substitute graft to wound 100.0 sq cm or more of trunk, arms, or legs, 100.0 sq cm or 1% body area for infants and children, or less	13	11	$1300.00	$183.45
99238 Hospital discharge day management, 30 minutes or less	13	12	$205.00	$68.98
47562 Removal of gallbladder using an endoscope	11	11	$1100.00	$645.90

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License DE DE-C1-0007575

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

Christiana Care Health Services Inc

1401 Foulk Rd, Wilmington, DE 198032764

Christiana Care Health Services Inc

501 W 14th St, Wilmington, DE 198011013

Christiana Care Health Services Inc

4755 Ogletown Stanton Rd, Newark, DE 197182200

Christiana Care Health Services Inc

501 W 14th St Fl, Wilmington, DE 198011013

Phone: 3023201300

Christiana Care Health Services Inc

4735 Ogletown Stanton Rd, Newark, DE 197138000

Christiana Care Health Services Inc

501 W 14th St Wilmington Hospital, Wilmington, DE 198011013

Practice Associates & Co-Workers

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

23 Associated Practitioners

Stefania Karavasilis

Physician Assistant

NPI 1013507888

Shawna Mccormick , PA-C

Physician Assistant

NPI 1023443181

Physician Assistant (Certified)

Monica Fraatz , PA-C

Physician Assistant - Surgical

NPI 1124545488

Physician Assistant (Certified)

Elisa Kershaw , PA-C

Physician Assistant - Surgical

NPI 1124570171

Physician Assistant (Certified)

Cassandra Mckenna , PA-C

Physician Assistant

NPI 1265144810

Physician Assistant (Certified)

Margaret Kamara

Nurse Practitioner - Family

NPI 1316484959

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active May 12, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location May 12, 2014

Registered at 1100 N GRANT AVE, 2ND FLOOR, WILMINGTON, DE 198052671 (Tel: 3024214100)

📍

Updated Business Mailing Address May 12, 2014

Registered at 1100 N GRANT AVE, 2ND FLOOR, WILMINGTON, DE 198052671 (Tel: 3024214100)

👤

Provider Name / Credentials Updated May 12, 2014

Recorded as KATHERINE SAHM, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 12, 2014

Surgery (License #DE-C1-0007575 in DE)

🟢

Initial NPI Registration & Enumeration July 05, 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: 1649201849

Entity Type:

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

Enumeration Date: July 05, 2006

Last Update: May 12, 2014

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1100 N Grant Ave, 2nd Floor

Wilmington, DE 198052671

Phone: 3024214100

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.