Active NPI 1518119098 Individual Practitioner Male Practitioner

Gregorio Sosa , PA

Physician Assistant • Riverside, CA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Gregorio Sosa, PA is a certified Physician Assistant practicing in Riverside, CA. With approximately 18 years of clinical experience since completing medical education in 2008, Gregorio Sosa delivers high-quality medical care to the local community at 9939 MAGNOLIA AVE.

Gregorio Sosa maintains professional affiliations with Javier R Rios Md A Professional Corporation, Dr. Javier Rios, A Medical Corporation, Alessandro Medical Professional Corporation and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, annual depression screening, 5 to. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

9939 Magnolia Ave

Riverside, CA 925033528

Telephone 8555057467

Fax 8889758926

Associated Practice Facility / Clinic

🏢 Javier R Rios Md, A Professional Corporation Facility NPI 1235138363

Medicare Profile & Education

Medical School

Other

Graduation Year

2008

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Riverside, CA

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

18 Yrs +3.5 yrs vs City Avg

City Avg: 14.5 Yrs

State Avg: 11.5 Yrs

Regional Practice Density

166 Specialists

Practicing in Riverside, CA (14617 Statewide)

Telehealth Adoption Rate

6.6% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

45.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Sosa (18 Years) 18 Yrs

Riverside Specialty Average (14.5 Years) 14.5 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	58	47	$200.00	$112.33
99213 Established patient office or other outpatient visit, typically 15 minutes	27	24	$150.00	$79.61
36415 Insertion of needle into vein for collection of blood sample	12	11	$25.00	$8.65
G0444 Annual depression screening, 5 to 15 minutes	11	11	$25.00	$16.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	53	43	$150.00	$79.73
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	39	35	$200.00	$112.47
36415 Insertion of needle into vein for collection of blood sample	28	26	$25.00	$8.40
81003 Automated urinalysis test	16	15	$25.00	$2.20
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	11	11	$150.00	$113.29
G0444 Annual depression screening, 5 to 15 minutes	11	11	$25.00	$16.41

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	64	51	$150.00	$80.59
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	45	38	$200.00	$112.18
36415 Insertion of needle into vein for collection of blood sample	25	24	$25.00	$2.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	78	61	$132.05	$81.29
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	34	27	$171.32	$115.90
36415 Insertion of needle into vein for collection of blood sample	24	20	$25.00	$3.00
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	14	14	$150.00	$118.16
G0444 Annual depression screening, 5 to 15 minutes	13	13	$25.00	$16.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	87	63	$80.00	$66.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	57	45	$135.00	$97.35
G0444 Annual depression screening, 5 to 15 minutes	25	25	$25.00	$16.32
36415 Insertion of needle into vein for collection of blood sample	21	21	$25.00	$2.97
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	19	13	$45.00	$12.69
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	12	12	$150.00	$103.55

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	116	87	$80.00	$65.70
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	44	22	$167.50	$88.10
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	42	26	$45.00	$14.90
36415 Insertion of needle into vein for collection of blood sample	40	33	$25.00	$2.94
81003 Automated urinalysis test	27	24	$25.00	$2.44
G0444 Annual depression screening, 5 to 15 minutes	19	19	$25.00	$16.06
93000 Routine ekg using at least 12 leads including interpretation and report	18	18	$150.00	$15.15
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	18	18	$150.00	$102.40
85018 Blood count, hemoglobin	15	11	$20.00	$2.58
G0008 Administration of influenza virus vaccine	13	13	$35.00	$17.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J1100 Injection, dexamethasone sodium phosphate, 1 mg	192	19	$10.00	$0.12
99213 Established patient office or other outpatient visit, typically 15 minutes	126	83	$80.00	$62.73
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	64	35	$43.59	$17.93
36415 Insertion of needle into vein for collection of blood sample	37	32	$25.00	$2.94
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	34	17	$167.50	$85.52
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	21	17	$40.00	$1.97
85018 Blood count, hemoglobin	21	18	$20.00	$2.87
93000 Routine ekg using at least 12 leads including interpretation and report	20	18	$150.00	$14.70
81003 Automated urinalysis test	20	17	$25.00	$2.71
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	15	15	$130.00	$92.70
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$120.00	$105.59
G0008 Administration of influenza virus vaccine	11	11	$35.00	$21.52
G0009 Administration of pneumococcal vaccine	11	11	$35.00	$21.52

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	110	83	$80.00	$64.39
J1100 Injection, dexamethasone sodium phosphate, 1 mg	104	13	$9.85	$0.12
36415 Insertion of needle into vein for collection of blood sample	55	47	$25.00	$2.94
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	37	20	$45.00	$22.95
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function	25	13	$172.80	$108.54
G0009 Administration of pneumococcal vaccine	17	17	$35.00	$26.83
93000 Routine ekg using at least 12 leads including interpretation and report	17	17	$150.00	$15.03
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	17	17	$120.00	$93.79
81003 Automated urinalysis test	15	15	$25.00	$3.02
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$130.00	$95.17
85018 Blood count, hemoglobin	11	11	$20.00	$3.18

Medical Specialties & State Licenses

CMS Verified: 2026-08-03

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License CA 20319

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Hospital & Practice Group Affiliations

Dr. Javier Rios, A Medical Corporation

31946 Mission Trl, Lake Elsinore, CA 925304539

Phone: 8555057467

Javier R Rios Md A Professional Corporation

4022 Chicago Ave, Riverside, CA 925075340

Phone: 8555057467

Dr. Javier Rios, A Medical Corporation

21091 Rider St, Perris, CA 925708837

Phone: 8555057467

Alessandro Medical Professional Corporation

13925 Indian St, Moreno Valley, CA 925535718

Phone: 8555057467

Javier R Rios Md A Professional Corporation

9939 Magnolia Ave, Riverside, CA 925033528

Phone: 8555057467

Practice Associates & Co-Workers

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

19 Associated Practitioners

Rodolfo Rojas

Family Medicine

NPI 1053686865

Dr. Gabriel Colon Caballero , MD

Internal Medicine

NPI 1114220886

Doctor of Medicine (M.D.)

Roseanne Garrison , PA-C

Physician Assistant - Medical

NPI 1154409654

Physician Assistant (Certified)

Dr. Kajal Gupta , MD

Internal Medicine

NPI 1154461010

Doctor of Medicine (M.D.)

Dr. Karis Joung , MD

Pediatrics

NPI 1164003547

Doctor of Medicine (M.D.)

Noel Santamaria , PA

Physician Assistant

NPI 1184075921

Physician Assistant

Career & Practice History Timeline

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

9 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 03, 2026

Physician Assistant (License #20319 in CA)

📍

Updated Business Mailing Address June 22, 2026

Registered at 495 E RINCON ST STE 215, CORONA, CA 928791378 (Tel: 9515230117)

📍

Updated Business Mailing Address January 03, 2022

Registered at PO BOX 70180, RIVERSIDE, CA 925130180 (Tel: 9515230117)

✅

NPI Profile Active May 24, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location May 24, 2016

Registered at 9939 MAGNOLIA AVE, RIVERSIDE, CA 925033528 (Tel: 9516878802)

📍

Updated Business Mailing Address May 24, 2016

Registered at 9939 MAGNOLIA AVE, RIVERSIDE, CA 925033528 (Tel: 9513543216)

👤

Provider Name / Credentials Updated May 24, 2016

Recorded as GREGORIO SOSA, PA

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 24, 2016

Physician Assistant

🟢

Initial NPI Registration & Enumeration October 16, 2008

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: 1518119098

Entity Type:

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

Enumeration Date: October 16, 2008

Last Update: August 03, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

495 E Rincon St Ste 215

Corona, CA 928791378

Phone: 9515230117

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.