Active NPI 1669834610 Individual Practitioner Male Practitioner

Dr. Gregory Sampson Powell , MD

Emergency Medicine • Orange, CA

✓ Accepts Medicare Assignment

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Powell, MD is a registered Emergency Medicine practitioner in Orange, CA. With approximately 10 years of clinical practice since graduating from University Of Michigan Medical School in 2016, Dr. Powell provides healthcare services at the registered practice location at 1310 W STEWART DR STE 212.

Dr. Powell is affiliated with Emergency Medicine Specialists Of Orange County and accepts Medicare assignment.

Frequently performed procedures and clinical services include routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, emergency department visit for life threatening or functioning severity, critical care, first. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1310 W Stewart Dr Ste 212

Orange, CA 928683837

Telephone 7145438911

Associated Practice Facility / Clinic

🏢 Providence - Cardiology Facility NPI 1043401870

Medicare Profile & Education

Medical School

University Of Michigan Medical School

Graduation Year

2016

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Emergency Medicine in Orange, CA

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

10 Yrs -3.2 yrs vs City Avg

City Avg: 13.2 Yrs

State Avg: 22.9 Yrs

Regional Practice Density

180 Specialists

Practicing in Orange, CA (7995 Statewide)

Telehealth Adoption Rate

0.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

86.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Powell (10 Years) 10 Yrs

Orange Specialty Average (13.2 Years) 13.2 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
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	248	233	$66.93	$8.89
99285 Emergency department visit for life threatening or functioning severity	201	199	$1431.64	$186.76
99291 Critical care, first 30-74 minutes	193	189	$1743.21	$230.92
99284 Emergency department visit with moderate level of medical decision making	58	56	$974.90	$129.13
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	12	12	$1323.00	$189.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99291 Critical care, first 30-74 minutes	111	109	$1400.00	$221.76
99285 Emergency department visit for life threatening or functioning severity	94	92	$1300.00	$180.72
99284 Emergency department visit with moderate level of medical decision making	93	89	$868.00	$124.57
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	84	83	$1053.00	$182.37
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	82	79	$49.00	$8.53
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$717.00	$136.65
99283 Emergency department visit with low level of medical decision making	13	12	$581.00	$73.93
71045 X-ray of chest, 1 view	11	11	$43.00	$9.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	159	155	$1237.79	$187.05
99291 Critical care, first 30-74 minutes	143	141	$1366.54	$232.39
99284 Emergency department visit with moderate level of medical decision making	72	70	$838.35	$129.02
99220 Hospital observation care, typically 70 minutes	71	70	$961.00	$190.89
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	38	36	$52.79	$8.95
99283 Emergency department visit with low level of medical decision making	35	34	$574.31	$76.31
99219 Hospital observation care, typically 50 minutes	27	27	$701.00	$141.50
99292 Critical care, each additional 30 minutes	19	19	$584.00	$116.45
71045 X-ray of chest, 1 view	17	17	$43.00	$9.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	184	170	$50.21	$8.94
99291 Critical care, first 30-74 minutes	129	126	$1345.60	$233.60
99285 Emergency department visit for life threatening or functioning severity	108	108	$1169.17	$188.38
99284 Emergency department visit with moderate level of medical decision making	62	62	$815.11	$129.47
99220 Hospital observation care, typically 70 minutes	52	51	$950.54	$194.18
99283 Emergency department visit with low level of medical decision making	34	34	$553.47	$76.26
71045 X-ray of chest, 1 view	33	33	$43.00	$9.72
99219 Hospital observation care, typically 50 minutes	19	19	$701.00	$143.41

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	68	67	$52.35	$9.23
99285 Emergency department visit for life threatening or functioning severity	67	66	$969.60	$184.19
99291 Critical care, first 30-74 minutes	33	33	$1254.94	$238.95
99284 Emergency department visit with moderate level of medical decision making	27	27	$732.07	$126.65
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$330.17	$180.27
99220 Hospital observation care, typically 70 minutes	16	16	$927.00	$200.74
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	14	$226.57	$120.60
99283 Emergency department visit with low level of medical decision making	12	12	$561.50	$69.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	21	21	$308.00	$178.83
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	18	$202.00	$119.15

Medical Specialties & State Licenses

CMS Verified: 2020-10-02

Emergency Medicine Primary Specialty

NUCC Taxonomy Code: 207P00000X

State License CA A151368

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.

Student in an Organized Health Care Education/Training Program

NUCC Taxonomy Code: 390200000X

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

Hospital & Practice Group Affiliations

Emergency Medicine Specialists Of Orange County

1100 W Stewart Dr, Orange, CA 928683849

Phone: 7146339111

Secondary Practice Locations

1000 W Carson St

Torrance, CA 905022004

Phone: 3102222345

Practice Associates & Co-Workers

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

8 Associated Practitioners

Danielle Chater Lea

Physician Assistant

NPI 1083331078

Dr. Tyler Ayalin , MD

Emergency Medicine

NPI 1124274915

Doctor of Medicine (M.D.)

John Nishioka

Physician Assistant

NPI 1316656416

Dr. Sonia Mehta , MD

Pediatrics

NPI 1639532294

Doctor of Medicine (M.D.)

Dr. Christepher Yao , MD, MPH

Emergency Medicine

NPI 1649237637

Doctor of Medicine (M.D.), Master of Public Health

Dr. Justin Anderson , MD

Emergency Medicine

NPI 1659534121

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

9 Historical Events

📍

Updated Practice Location October 02, 2020

Registered at 1310 W STEWART DR STE 212, ORANGE, CA 928683837 (Tel: 7145438911)

📍

Updated Business Mailing Address October 02, 2020

Registered at 1310 W STEWART DR STE 212, ORANGE, CA 928683837 (Tel: 7146547642)

👤

Provider Name / Credentials Updated October 02, 2020

Recorded as GREGORY POWELL, MD

✅

NPI Profile Active March 28, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location March 28, 2016

Registered at 1000 W CARSON ST, TORRANCE, CA 905022004 (Tel: 3102222345)

📍

Updated Business Mailing Address March 28, 2016

Registered at 18736 ASHFORD LN, HUNTINGTON BEACH, CA 926487032 (Tel: 7146547642)

👤

Provider Name / Credentials Updated March 28, 2016

Recorded as GREGORY POWELL

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 28, 2016

Student in an Organized Health Care Education/Training Program

🟢

Initial NPI Registration & Enumeration March 28, 2016

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: 1669834610

Entity Type:

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

Enumeration Date: March 28, 2016

Last Update: October 02, 2020

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1310 W Stewart Dr Ste 212

Orange, CA 928683837

Phone: 7146547642

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.