Tom Chow , PA-C
Physician Assistant • Orange, CA
280 S Main St, Ste 200
Orange, CA 928683852
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 October 4, 2005; this date does not establish years in practice.
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Published CMS data list 142 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Oxycodone Hcl — 56 prescription fills, including refills.
- Meloxicam — 49 prescription fills, including refills.
- Tramadol Hcl — 23 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Physician Assistant in Orange, CA (2024, 106 clinicians with data). Median for this group: 204. Middle half: 75 to 588.
Fewer Part D prescriptions than 60% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 141 in 2020 to 142 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020–2024.
Practice Location & Contact Primary Location
280 S Main St
Ste 200
Orange, CA 928683852
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: Southern California Permanente Medical Group. 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
Stanford University School Of Medicine
2001
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
144 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
$1,103 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 – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
Years since graduation
25 years (graduated 2001)
CMS Doctors and Clinicians data list 2001 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
2005
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, “Does your provider accept Medicare as full payment?”
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)
Tom Chow 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 Tom Chow 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 D prescriptions
Close to the middle for clinicians listed under Physician Assistant in Orange, CA (2024, 106 clinicians with data). Median for this group: 204. Middle half: 75 to 588.
Fewer Part D prescriptions than 60% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under Physician Assistant in Orange, CA (2024, 106 clinicians with data). Median for this group: $2,576. Middle half: $717 to $27,315.
A lower Part D drug cost than 65% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: $3,945. Middle half: $709 to $60,209.
181 active clinicians are listed under Physician Assistant with a practice address in Orange, CA (14,458 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Orange
16.6% of these 181 clinicians have the CMS telehealth indicator.
57.5% of these 181 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 D prescriptions
Medicare Part D prescriptions varied from year to year: 141 in 2020 and 142 in 2024.
- 2020: 141
- 2021: 124
- 2022: 61
- 2023: 110
- 2024: 142
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30-day fills
30-day fills varied from year to year: 146 in 2020 and 144 in 2024.
- 2020: 146
- 2021: 124
- 2022: 61
- 2023: 110
- 2024: 144
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Part D drug cost
Part D drug cost decreased 62% from $2,895 in 2020 to $1,103 in 2024.
- 2020: $2,895
- 2021: $1,412
- 2022: $462
- 2023: $811
- 2024: $1,103
Sources: CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
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 |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 56 | 296 | $447.92 | 52 |
| Meloxicam | Meloxicam | 49 | 1,214 | $294.77 | 43 |
| Tramadol Hcl | Tramadol Hcl | 23 | 122 | $145.99 | 21 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 14 | 92 | $214.26 | — |
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: 2021-10-23NUCC Taxonomy Code: 363A00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20110111000466
CA
3678762325
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
Southern California Permanente Medical Group
3430 E La Palma Ave, Anaheim, CA 928062020
Phone: 8889882800
Southern California Permanente Medical Group
5475 E La Palma Ave, Anaheim, CA 928072075
Phone: 7142796088
Southern California Permanente Medical Group
3460 E La Palma Ave, Anaheim, CA 928062020
Phone: 7146442010
Southern California Permanente Medical Group
6650 Alton Pkwy, Irvine, CA 926183734
Phone: 9499325000
Southern California Permanente Medical Group
6640 Alton Pkwy, Irvine, CA 926183734
Phone: 9499325000
Southern California Permanente Medical Group
6670 Alton Pkwy, Irvine, CA 926183734
Phone: 9499325000
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
Orthopaedic Surgery - Orthopaedic Surgery of the Spine
Doctor of Medicine (M.D.)
Physician Assistant - Surgical
Physician Assistant (Certified)
Nurse Practitioner - Family
Nurse Practitioner (Certified), RNFA
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated October 04, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Orange
- Valerie Hancox
- Jennifer Judelson, PA-C
- Vasco Kidd, PA
- Kuljinder Dosanjh, PA
- Lindsay Kiss
- Cassie Poole, PA-C
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Mailing Address
25825 Vermont Ave, Kaiser Permanente - Department Of Orthopedics
Harbor City, CA 907103518
Phone: 3105172940