Active NPI 1093860983 Individual Practitioner Male Practitioner

Dr. Christopher D. Rosenbaum , MD

Emergency Medicine • Worcester, MA

Professional Overview & Biography Verified Profile Summary

Dr. Christopher Rosenbaum, MD is a registered healthcare professional specializing in Emergency Medicine in Worcester, MA. Practice services are available at 55 LAKE AVE N under active NPI credentials.

Frequently performed procedures and clinical services include emergency department visit for life threatening or functioning severity, ultrasound of heart, follow-up, emergency department visit with moderate level of medical decision making. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

55 Lake Ave N
Department Of Emergency Medicine

Worcester, MA 016550002

Telephone 5084211400

Fax 5084211490

Associated Practice Facility / Clinic

🏢 Umass Memorial Medical Center Facility NPI 1679574933

Specialty Benchmarks & Practice Insights

Comparative analytics for Emergency Medicine in Worcester, MA

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 13.9 Yrs

State Avg: 24.2 Yrs

Regional Practice Density

219 Specialists

Practicing in Worcester, MA (1875 Statewide)

Telehealth Adoption Rate

3.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

75.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

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
99285 Emergency department visit for life threatening or functioning severity	725	702	$721.83	$178.67
93308 Ultrasound of heart, follow-up	82	81	$106.59	$25.63
99284 Emergency department visit with moderate level of medical decision making	75	75	$497.45	$123.85
99291 Critical care, first 30-74 minutes	48	48	$884.71	$219.64
99292 Critical care, each additional 30 minutes	44	20	$444.27	$110.73
76775 Limited ultrasound scan behind abdominal cavity	24	24	$142.00	$28.48
76705 Limited ultrasound scan of abdomen	23	23	$117.78	$28.82
76604 Ultrasound scan of chest	16	16	$114.63	$26.94

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	691	665	$953.00	$182.78
93042 Interpretation and report of electrical activity of heart using 1-3 leads	182	166	$37.00	$7.11
99284 Emergency department visit with moderate level of medical decision making	70	69	$654.00	$124.97
99291 Critical care, first 30-74 minutes	46	46	$1182.00	$224.30
93308 Ultrasound of heart, follow-up	32	31	$603.00	$26.26
76775 Limited ultrasound scan behind abdominal cavity	24	23	$156.00	$29.39
99292 Critical care, each additional 30 minutes	18	15	$594.00	$112.78

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	747	719	$953.00	$185.90
93042 Interpretation and report of electrical activity of heart using 1-3 leads	192	162	$37.00	$7.32
99284 Emergency department visit with moderate level of medical decision making	133	133	$654.00	$128.94
99291 Critical care, first 30-74 minutes	62	62	$1182.00	$231.69
99283 Emergency department visit with low level of medical decision making	37	36	$386.00	$76.23
99292 Critical care, each additional 30 minutes	30	17	$594.00	$116.89
93308 Ultrasound of heart, follow-up	12	12	$603.00	$27.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	717	680	$896.87	$190.53
93042 Interpretation and report of electrical activity of heart using 1-3 leads	161	148	$36.42	$7.46
99284 Emergency department visit with moderate level of medical decision making	138	136	$613.02	$130.89
99291 Critical care, first 30-74 minutes	78	77	$1156.24	$236.37
99283 Emergency department visit with low level of medical decision making	42	42	$344.93	$77.12
99292 Critical care, each additional 30 minutes	32	19	$579.16	$118.75
93308 Ultrasound of heart, follow-up	17	17	$247.41	$27.54

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	565	537	$865.98	$186.15
99284 Emergency department visit with moderate level of medical decision making	175	171	$587.93	$128.36
99291 Critical care, first 30-74 minutes	73	72	$1131.64	$240.96
99283 Emergency department visit with low level of medical decision making	58	55	$309.76	$69.98
99292 Critical care, each additional 30 minutes	33	22	$569.00	$121.21
93308 Ultrasound of heart, follow-up	23	23	$138.00	$28.24
76705 Limited ultrasound scan of abdomen	11	11	$153.00	$32.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	603	577	$842.24	$183.21
99284 Emergency department visit with moderate level of medical decision making	252	242	$572.13	$124.71
99283 Emergency department visit with low level of medical decision making	87	85	$302.00	$65.82
99291 Critical care, first 30-74 minutes	59	59	$1100.00	$237.68
93308 Ultrasound of heart, follow-up	20	20	$134.00	$27.69
76705 Limited ultrasound scan of abdomen	15	15	$149.00	$31.52
99292 Critical care, each additional 30 minutes	13	12	$552.00	$119.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	610	574	$842.00	$182.87
99284 Emergency department visit with moderate level of medical decision making	291	285	$572.00	$124.57
99283 Emergency department visit with low level of medical decision making	84	82	$302.00	$65.74
99291 Critical care, first 30-74 minutes	42	41	$1100.00	$238.26
76705 Limited ultrasound scan of abdomen	21	21	$149.00	$30.41
93308 Ultrasound of heart, follow-up	14	14	$134.00	$25.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	612	590	$841.82	$178.65
99284 Emergency department visit with moderate level of medical decision making	244	234	$571.89	$120.48
99283 Emergency department visit with low level of medical decision making	115	112	$302.00	$64.15
99291 Critical care, first 30-74 minutes	53	51	$1099.57	$233.50

Medical Specialties & State Licenses

Emergency Medicine Primary Specialty

NUCC Taxonomy Code: 207P00000X

State License MA 231343

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

2149419 (MA)

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Hillary Irons , MD

Emergency Medicine

NPI 1003041971

Doctor of Medicine (M.D.)

Samantha Williams , FNP-BC

Nurse Practitioner - Family

NPI 1003571209

Family Nurse Practitioner (Board Certified)

Duncan Daviau , PA-C

Physician Assistant

NPI 1013432582

Physician Assistant (Certified)

Caterina Singas , PA-C

Physician Assistant

NPI 1013557917

Physician Assistant (Certified)

Dr. Romolo Gaspari , MD

Emergency Medicine

NPI 1023091261

Doctor of Medicine (M.D.)

Jessie Christensen , CNP

Nurse Practitioner

NPI 1043652274

Certified Nurse Practitioner

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active November 04, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location November 04, 2010

Registered at 55 LAKE AVE N, DEPARTMENT OF EMERGENCY MEDICINE, WORCESTER, MA 016550002 (Tel: 5084211400)

📍

Updated Business Mailing Address November 04, 2010

Registered at PO BOX 415348, BOSTON, MA 022415348

👤

Provider Name / Credentials Updated November 04, 2010

Recorded as CHRISTOPHER ROSENBAUM, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 04, 2010

Emergency Medicine (License #231343 in MA)

🟢

Initial NPI Registration & Enumeration January 24, 2007

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: 1093860983

Entity Type:

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

Enumeration Date: January 24, 2007

Last Update: November 04, 2010

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 415348

Boston, MA 022415348

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.