Active NPI 1164511648 Individual Practitioner Male Practitioner

Dr. Corey D Harrison , MD

Emergency Medicine • Worcester, MA

Professional Overview & Biography Verified Profile Summary

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

Frequently performed procedures and clinical services include emergency department visit with low level of medical decision making, emergency department visit with moderate level of medical decision making, emergency department visit for life threatening or functioning severity. 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 North
Department Of Emergency Medicine

Worcester, MA 016550000

Telephone 5084211400

Fax 5084211490

Associated Practice Facility / Clinic

🏢 Umass Memorial Medical Center Facility NPI 1679791339

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

91.2% 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
99283 Emergency department visit with low level of medical decision making	12	12	$850.00	$68.04
99284 Emergency department visit with moderate level of medical decision making	11	11	$1244.00	$115.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99284 Emergency department visit with moderate level of medical decision making	29	29	$1244.00	$116.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99283 Emergency department visit with low level of medical decision making	49	47	$825.29	$70.51
99284 Emergency department visit with moderate level of medical decision making	37	37	$1259.00	$118.78
99285 Emergency department visit for life threatening or functioning severity	28	28	$1878.50	$172.62
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	21	21	$93.33	$8.14

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	169	160	$1892.00	$175.04
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	123	116	$93.00	$8.25
99284 Emergency department visit with moderate level of medical decision making	49	49	$1281.00	$120.83
99283 Emergency department visit with low level of medical decision making	32	30	$682.41	$71.03
99291 Critical care, first 30-74 minutes	25	25	$2957.00	$215.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	187	171	$1801.00	$172.81
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	137	123	$88.00	$8.49
99284 Emergency department visit with moderate level of medical decision making	41	39	$1220.00	$118.67
99283 Emergency department visit with low level of medical decision making	32	28	$644.00	$64.88
99291 Critical care, first 30-74 minutes	32	31	$2816.00	$221.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	157	153	$1715.00	$169.26
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	78	74	$84.00	$8.30
99284 Emergency department visit with moderate level of medical decision making	59	59	$1162.00	$114.92
93042 Interpretation and report of electrical activity of heart using 1-3 leads	32	31	$70.00	$6.93
99283 Emergency department visit with low level of medical decision making	28	27	$613.00	$60.56
99291 Critical care, first 30-74 minutes	16	16	$2682.00	$216.82

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	116	113	$1715.00	$169.12
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	57	51	$84.00	$8.30
99284 Emergency department visit with moderate level of medical decision making	44	43	$1162.00	$114.82
99283 Emergency department visit with low level of medical decision making	24	24	$613.00	$60.49
99291 Critical care, first 30-74 minutes	13	13	$2682.00	$217.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	53	53	$1248.40	$168.85
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	37	36	$50.00	$8.26
99284 Emergency department visit with moderate level of medical decision making	11	11	$713.09	$114.44

Medical Specialties & State Licenses

Emergency Medicine Primary Specialty

NUCC Taxonomy Code: 207P00000X

State License MA 212695

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

0166910 (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 March 05, 2009

NPI status registered as active in NPPES database

📍

Updated Practice Location March 05, 2009

Registered at 55 LAKE AVE NORTH, DEPARTMENT OF EMERGENCY MEDICINE, WORCESTER, MA 016550000 (Tel: 5084211400)

📍

Updated Business Mailing Address March 05, 2009

Registered at PO BOX 415348, BOSTON, MA 022415348

👤

Provider Name / Credentials Updated March 05, 2009

Recorded as COREY HARRISON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 05, 2009

Emergency Medicine (License #212695 in MA)

🟢

Initial NPI Registration & Enumeration October 12, 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: 1164511648

Entity Type:

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

Enumeration Date: October 12, 2006

Last Update: March 05, 2009

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.