Evan Shih
Internal Medicine โข Orange, CA
101 The City Dr S
Orange, CA 928683201
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on April 4, 2017; this date does not establish years in practice.
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Published CMS data list 776 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 305 service units.
- G0316 โ Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th: 110 service units.
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 93 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 9 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 11 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) โ 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Orange, CA (2024, 93 clinicians with data). Median for this group: 635. Middle half: 264 to 1,135.
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: 547. Middle half: 197 to 1,242.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 67 in 2020 to 776 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
101 The City Dr S
Orange, CA 928683201
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Los Angeles, CA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: The Regents Of The University Of California-Irvine. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of California, Geffen School Of Medicine
2017
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
274 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $79,793 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $62,451 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
11 standardized 30-day fills in 2023
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$119 in 2023
The total cost of these prescriptions in 2023, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
9 years (graduated 2017)
CMS Doctors and Clinicians data list 2017 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2017
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Evan Shih has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Evan Shih as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Orange and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Orange, CA (2024, 93 clinicians with data). Median for this group: 635. Middle half: 264 to 1,135.
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: 547. Middle half: 197 to 1,242.
Medicare-allowed amount
A higher Medicare-allowed amount than 65% of clinicians listed under Internal Medicine in Orange, CA (2024, 93 clinicians with data). Median for this group: $62,483. Middle half: $30,626 to $94,764.
A higher Medicare-allowed amount than 60% of clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: $57,391. Middle half: $20,415 to $125,751.
Paid by Medicare
A higher Medicare payment amount than 65% of clinicians listed under Internal Medicine in Orange, CA (2024, 93 clinicians with data). Median for this group: $47,067. Middle half: $22,228 to $74,251.
A higher Medicare payment amount than 60% of clinicians listed under Internal Medicine in California (2024, 8,005 clinicians with data). Median for this group: $43,431. Middle half: $14,887 to $95,905.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Evan Shih are from 2023.
187 active clinicians are listed under Internal Medicine with a practice address in Orange, CA (17,717 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Orange
23.5% of these 187 clinicians have the CMS telehealth indicator.
62% of these 187 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 1058% from 67 in 2020 to 776 in 2024.
- 2020: 67
- 2021: 541
- 2022: 1,145
- 2023: 670
- 2024: 776
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Medicare-allowed amount
Medicare-allowed amount increased 778% from $9,085 in 2020 to $79,793 in 2024.
- 2020: $9,085
- 2021: $61,699
- 2022: $133,168
- 2023: $77,396
- 2024: $79,793
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Paid by Medicare
Paid by Medicare increased 754% from $7,312 in 2020 to $62,451 in 2024.
- 2020: $7,312
- 2021: $49,312
- 2022: $105,975
- 2023: $61,057
- 2024: $62,451
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 62% from 29 in 2020 to 11 in 2023.
- 2020: 29
- 2022: 36
- 2023: 11
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30-day fills
30-day fills decreased 72% from 40 in 2020 to 11 in 2023.
- 2020: 40
- 2022: 45
- 2023: 11
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Part D drug cost
Part D drug cost decreased 90% from $1,179 in 2020 to $119 in 2023.
- 2020: $1,179
- 2022: $8,111
- 2023: $119
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2019โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2020โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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305 | 133 | $680.00 | $122.43 |
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G0316
Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th
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110 | 70 | $134.35 | $31.48 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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93 | 59 | $470.00 | $81.56 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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88 | 88 | $1320.00 | $179.07 |
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99239
Hospital discharge day management, more than 30 minutes
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59 | 56 | $573.00 | $119.63 |
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76937
Ultrasonic guidance for blood vessel access
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42 | 39 | $69.29 | $14.06 |
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36410
Insertion of needle into vein (3 years or older)
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39 | 36 | $104.00 | $8.98 |
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99291
Critical care, first 30-74 minutes
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29 | 26 | $1800.00 | $212.35 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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11 | 11 | $890.00 | $135.32 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 11 | 88 | $119.40 | 11 |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-06-03NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20200511001697
CA
6608208848
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
The Regents Of The University Of California-Irvine
101 The City Dr S, Orange, CA 928683201
Phone: 7144567890
Secondary Practice Locations
757 Westwood Plz
Los Angeles, CA 900958358
Phone: 3108257375
200 Medical Plaza Ste 420
Los Angeles, CA 900958358
Phone: 3102066232
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant - Medical
Physician Assistant (Certified)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Physical Medicine & Rehabilitation
Doctor of Osteopathic Medicine (D.O.)
Anesthesiology
Doctor of Medicine (M.D.)
Surgery - Trauma Surgery
Doctor of Medicine (M.D.)
Hospitalist
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 101 THE CITY DR S, ORANGE, CA 928683201 (Tel: 7144567890)
Registered at 200 MEDICAL PLAZA STE 420, LOS ANGELES, CA 900958358 (Tel: 3102066232)
Registered at 5767 W CENTURY BLVD STE 400, LOS ANGELES, CA 900455631 (Tel: 3103018771)
Internal Medicine (license number reported to NPPES: CA 161506)
NPI status registered as active in NPPES database
Registered at 757 WESTWOOD PLZ, LOS ANGELES, CA 900958358 (Tel: 3108257375)
Registered at 6 WAKEFIELD, IRVINE, CA 926203288 (Tel: 9497480934)
Recorded as EVAN SHIH
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Orange
- Dr. Kevin Truong, MD, MBA
- Dr. Chung Cuiffo, MD
- Dr. Jay Amin, MD
- Dr. Amir Mekhail, MD
- Dr. Elizabeth Cho, MD MPH
- Dr. Christopher Vercammen-Grandjean, MD
More public profiles in California
Directory navigation, in NPI number order.
- Tanya Selvam Internal Medicine ยท West Hollywood
- Grace Kim, PharmD Pharmacist - Ambulatory Care ยท Santa Rosa
- Sue Kim, DDS Dentist - General Practice ยท Torrance
- Jesse Han, DDS Oral & Maxillofacial Surgery ยท Piedmont
- Peggy Einsele, FNP-C Nurse Practitioner - Family ยท Yreka
- Helen Wang Pharmacist ยท Carlsbad
- Michelle Anne Healy, PharmD Pharmacist - Ambulatory Care ยท Union City
- Andrew Wu Anesthesiology ยท Los Angeles
- Yegor Kamenski, RPH Pharmacist ยท Fontana
- Elsa Camarillo, DO Internal Medicine - Pulmonary Disease ยท Orange
- Theresa Lii, MD Anesthesiology - Pain Medicine ยท Stanford
- William Cope Internal Medicine ยท Los Angeles
Mailing Address
5767 W Century Blvd Ste 400
Los Angeles, CA 900455631
Phone: 3103018771