Active NPI 1124025598 Individual Practitioner Male Practitioner

Dr. Michael T. Mai , MD

Orthopaedic Surgery • Corona, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Michael Mai, MD is a certified Orthopaedic Surgery practicing in Corona, CA. With approximately 41 years of clinical experience since graduating from Stanford University School Of Medicine in 1985, Dr. Mai delivers high-quality medical care to the local community at 21634 RETREAT PKWY.

Dr. Mai is affiliated with Riverside Medical Clinic Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, aspiration and/or injection of fluid from large joint. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

21634 Retreat Pkwy

Corona, CA 928836100

Telephone 9514936930

Fax 9518268136

Associated Practice Facility / Clinic

🏢 Rmc Surgery Center Llc Facility NPI 1760043426

Medicare Profile & Education

Medical School

Stanford University School Of Medicine

Graduation Year

1985

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Orthopaedic Surgery in Corona, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

41 Yrs +13.2 yrs vs City Avg

City Avg: 27.8 Yrs

State Avg: 28.4 Yrs

Regional Practice Density

14 Specialists

Practicing in Corona, CA (2527 Statewide)

Telehealth Adoption Rate

14.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

43.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mai (41 Years) 41 Yrs

Corona Specialty Average (27.8 Years) 27.8 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
99213 Established patient office or other outpatient visit, typically 15 minutes	33	18	$166.13	$93.34
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$201.00	$114.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	38	23	$161.00	$93.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	60	37	$159.60	$95.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	57	42	$161.00	$95.17
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	38	29	$229.00	$130.80
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	14	$100.00	$59.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	15	15	$197.00	$118.14

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	39	34	$184.00	$111.33
99213 Established patient office or other outpatient visit, typically 15 minutes	34	28	$127.00	$79.76
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$278.00	$167.09

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	99	62	$124.99	$77.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	68	51	$184.00	$112.86
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	19	19	$183.00	$113.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	109	63	$124.00	$75.47
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	74	53	$182.00	$111.58
20610 Aspiration and/or injection of fluid from large joint	22	15	$112.45	$63.80
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$278.88	$170.04
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	17	17	$183.00	$111.46

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	99	68	$124.00	$75.63
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	35	$182.00	$110.98
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	29	29	$183.00	$111.33
20610 Aspiration and/or injection of fluid from large joint	20	17	$106.60	$63.66

Medical Specialties & State Licenses

CMS Verified: 2025-04-14

Orthopaedic Surgery Primary Specialty

NUCC Taxonomy Code: 207X00000X

State License CA G57605

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery

NUCC Taxonomy Code: 207XS0114X

State License CA G57605

Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures.

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID Railroad

200040738 (CA)

Commercial Insurance / Payer ID Group Npi

1730180415 (CA)

Hospital & Practice Group Affiliations

Riverside Medical Clinic Inc

7117 Brockton Ave, Riverside, CA 925062658

Phone: 9516836370

Secondary Practice Locations

818 Magnolia Ave.

Corona, CA 92879

Phone: 9514936930

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Ronald Crater , MD

Orthopaedic Surgery

NPI 1801172291

Doctor of Medicine (M.D.)

Dr. Ryan Ricks , DPM

Podiatrist

NPI 1922081843

Doctor of Podiatric Medicine

Career & Practice History Timeline

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

9 Historical Events

📍

Updated Practice Location February 24, 2020

Registered at 21634 RETREAT PKWY, CORONA, CA 928836100 (Tel: 9514936930)

📍

Updated Business Mailing Address February 24, 2020

Registered at 21634 RETREAT PKWY, CORONA, CA 928836100 (Tel: 9514936930)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 24, 2020

Orthopaedic Surgery (License #G57605 in CA)

✅

NPI Profile Active December 29, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location December 29, 2010

Registered at 818 MAGNOLIA AVE., CORONA, CA 92879 (Tel: 9514936930)

📍

Updated Business Mailing Address December 29, 2010

Registered at 3660 ARLINGTON AVE., RIVERSIDE, CA 925063812 (Tel: 9517825110)

👤

Provider Name / Credentials Updated December 29, 2010

Recorded as MICHAEL MAI, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 29, 2010

Orthopaedic Surgery (License #G57605 in CA)

🟢

Initial NPI Registration & Enumeration June 30, 2005

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: 1124025598

Entity Type:

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

Enumeration Date: June 30, 2005

Last Update: April 14, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

21634 Retreat Pkwy

Corona, CA 928836100

Phone: 9514936930

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.