Dr. Terry Lidvin Simpson , MD, FACS
Surgery โข Camarillo, CA
760 Las Posas Rd Ste C
Camarillo, CA 930102910
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 November 15, 2006; this date does not establish years in practice.
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Published CMS data list 10,114 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:
- 99308 โ Subsequent nursing facility care with straightforward level of medical decision making, per day: 2,571 service units.
- 17250 โ Application of chemical to stop tissue regrowth in wound: 1,612 service units.
- 99308 โ Subsequent nursing facility care with straightforward level of medical decision making, per day: 898 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 28 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 65 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Permethrin โ 28 prescription fills, including refills.
- Prednisone โ 20 prescription fills, including refills.
- Triamcinolone Acetonide โ 17 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. 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 95% of clinicians listed under Surgery in California (2024, 1,346 clinicians with data). Median for this group: 213. Middle half: 101 to 404.
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 40 in 2020 to 10,114 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
760 Las Posas Rd Ste C
Camarillo, CA 930102910
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Izuchukwu Okpara Md Inc. 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 Chicago, Pritzker School Of Medicine
1986
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
702 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 $927,202 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 $731,056 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
65 standardized 30-day fills in 2024
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
$3,161 in 2024
The total cost of these prescriptions in 2024, 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, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $6,500.00 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
40 years (graduated 1986)
CMS Doctors and Clinicians data list 1986 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
2006
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)
Dr. Simpson 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 Dr. Simpson 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 Camarillo and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Surgery in California (2024, 1,346 clinicians with data). Median for this group: 213. Middle half: 101 to 404.
Too few clinicians listed under Surgery in Camarillo have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Surgery in California (2024, 1,346 clinicians with data). Median for this group: $32,453. Middle half: $13,159 to $66,109.
Too few clinicians listed under Surgery in Camarillo have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Surgery in California (2024, 1,346 clinicians with data). Median for this group: $24,935. Middle half: $10,148 to $50,637.
Too few clinicians listed under Surgery in Camarillo have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Surgery in California (2024, 1,327 clinicians with data). Median for this group: 54. Middle half: 26 to 105.
Too few clinicians listed under Surgery in Camarillo have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Surgery in California (2024, 1,327 clinicians with data). Median for this group: $346. Middle half: $126 to $1,126.
Too few clinicians listed under Surgery in Camarillo have Medicare Part D data for 2024 to compare.
5 active clinicians are listed under Surgery with a practice address in Camarillo, CA (3,120 in California).
Addresses are self-reported to NPPES and may be out of date.
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 25185% from 40 in 2020 to 10,114 in 2024.
- 2020: 40
- 2021: 5,047
- 2022: 7,990
- 2023: 10,587
- 2024: 10,114
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Medicare-allowed amount
Medicare-allowed amount increased 15414% from $5,977 in 2020 to $927,202 in 2024.
- 2020: $5,977
- 2021: $564,219
- 2022: $839,833
- 2023: $1,039,493
- 2024: $927,202
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Paid by Medicare
Paid by Medicare increased 15716% from $4,622 in 2020 to $731,056 in 2024.
- 2020: $4,622
- 2021: $451,229
- 2022: $666,747
- 2023: $822,565
- 2024: $731,056
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 183% from 23 in 2018 to 65 in 2024.
- 2018: 23
- 2021: 22
- 2022: 25
- 2023: 13
- 2024: 65
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30-day fills
30-day fills increased 183% from 23 in 2018 to 65 in 2024.
- 2018: 23
- 2021: 22
- 2022: 25
- 2023: 13
- 2024: 65
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Part D drug cost
Part D drug cost went from $138 in 2018 to $3,161 in 2024.
- 2018: $138
- 2021: $648
- 2022: $449
- 2023: $153
- 2024: $3,161
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $131.18 in 2019 to $6,500.00 in 2025.
- 2019: $131.18
- 2020: $1,103.48
- 2021: $104.40
- 2025: $6,500.00
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $6,500.00.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Withings, Inc. |
Consulting Fee
Cash or cash equivalent
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โ | General | $6,500.00 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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, 2017โ2024; 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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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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2,571 | 486 | $169.97 | $76.96 |
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17250
Application of chemical to stop tissue regrowth in wound
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1,612 | 138 | $172.68 | $65.66 |
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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898 | 175 | $169.84 | $76.80 |
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17250
Application of chemical to stop tissue regrowth in wound
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745 | 157 | $202.03 | $23.87 |
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11043
Removal of muscle and/or tissue, 20.0 sq cm or less
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545 | 93 | $308.53 | $210.44 |
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11046
Removal of muscle and/or tissue, each additional 20.0 sq cm or less
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513 | 28 | $129.33 | $75.18 |
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99304
Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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355 | 353 | $189.00 | $82.03 |
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11043
Removal of muscle and/or tissue, 20.0 sq cm or less
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323 | 99 | $300.46 | $146.00 |
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11042
Removal of skin and tissue, 20.0 sq cm or less
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305 | 89 | $210.82 | $97.51 |
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11047
Removal of bone, each additional 20.0 sq cm or less
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291 | 19 | $231.33 | $123.15 |
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11046
Removal of muscle and/or tissue, each additional 20.0 sq cm or less
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255 | 32 | $127.00 | $53.45 |
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11044
Removal of bone, 20.0 sq cm or less
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253 | 40 | $525.12 | $325.06 |
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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241 | 75 | $190.00 | $110.72 |
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29581
Application of vein wound compression bandages on lower leg, ankle, and foot
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208 | 17 | $175.00 | $110.79 |
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11042
Removal of skin and tissue, 20.0 sq cm or less
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188 | 77 | $200.53 | $44.19 |
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17000
Destruction of precancer skin growth, 1 growth
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145 | 33 | $165.00 | $59.51 |
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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103 | 30 | $190.00 | $110.80 |
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11047
Removal of bone, each additional 20.0 sq cm or less
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85 | 14 | $228.00 | $94.66 |
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11044
Removal of bone, 20.0 sq cm or less
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84 | 27 | $525.67 | $223.09 |
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99304
Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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83 | 83 | $189.00 | $81.27 |
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99348
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes
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79 | 35 | $122.91 | $79.31 |
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11045
Removal of skin and tissue, each additional 20.0 sq cm or less
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78 | 14 | $57.44 | $42.30 |
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11045
Removal of skin and tissue, each additional 20.0 sq cm or less
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54 | 20 | $60.00 | $24.71 |
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49450
Replacement of stomach or large bowel tube using fluoroscopic guidance with contrast
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28 | 14 | $1304.29 | $659.54 |
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17000
Destruction of precancer skin growth, 1 growth
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26 | 15 | $165.00 | $56.29 |
(top 25 shown)
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 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Permethrin | Permethrin | 28 | 69 | $2,850.47 | โ |
| Prednisone | Prednisone | 20 | 161 | $131.54 | โ |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 17 | 206 | $178.92 | 13 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-01-13NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20200213001074
CA
0042121865
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
Izuchukwu Okpara Md Inc
28212 Kelly Johnson Pkwy, Valencia, CA 913555090
Phone: 2132283538
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 760 LAS POSAS RD STE C, CAMARILLO, CA 930102910 (Tel: 8056201000)
Registered at 2392 FOSTER AVE, VENTURA, CA 930012416 (Tel: 8056201000)
Surgery (license number reported to NPPES: AZ 21784)
Registered at 3661 LAS POSAS RD STE G162, CAMARILLO, CA 930101430 (Tel: 8056201000)
Registered at 2674 E MAIN ST STE E-928, VENTURA, CA 930032820 (Tel: 8056201000)
Surgery (license number reported to NPPES: CA G152805)
Registered at 3219 E CAMELBACK RD STE 483, PHOENIX, AZ 850182307 (Tel: 4805005080)
NPI status registered as active in NPPES database
Registered at 9377 E BELL RD, SUITE 207, SCOTTSDALE, AZ 852601502 (Tel: 4805005080)
Registered at 9377 E BELL RD, SUITE 207, SCOTTSDALE, AZ 852601502 (Tel: 4805005080)
Recorded as TERRY SIMPSON, MD., FACS
Surgery (license number reported to NPPES: AZ 21784)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Camarillo
Healthcare providers in CamarilloMailing Address
2392 Foster Ave
Ventura, CA 930012416
Phone: 8056201000