Naima B Thomas , PHYSICIAN ASSISTANT
Physician Assistant β’ Martinez, CA
200 Muir Rd
Martinez, CA 945534614
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 July 2, 2007; this date does not establish years in practice.
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Published CMS data list 1,376 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Tamsulosin Hcl β 534 prescription fills, including refills.
- Finasteride β 326 prescription fills, including refills.
- Trospium Chloride β 125 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 15 records in the table Β· Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 85% 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 β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 1,033 in 2020 to 1,376 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2020β2024.
Practice Location & Contact Primary Location
200 Muir Rd
Martinez, CA 945534614
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: Permanente Medical Group 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
2006
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
3,784 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
$39,205 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 β by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021β2025.
Years since graduation
20 years (graduated 2006)
CMS Doctors and Clinicians data list 2006 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
2007
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, βDoes your provider accept Medicare as full payment?β
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Naima Thomas 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 Naima Thomas 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 Martinez and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.
Too few clinicians listed under Physician Assistant in Martinez have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 70% 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.
Too few clinicians listed under Physician Assistant in Martinez have Medicare Part D data for 2024 to compare.
6 active clinicians are listed under Physician Assistant with a practice address in Martinez, CA (14,458 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 D prescriptions
Medicare Part D prescriptions increased 33% from 1,033 in 2020 to 1,376 in 2024.
- 2020: 1,033
- 2021: 1,174
- 2022: 1,295
- 2023: 1,397
- 2024: 1,376
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30-day fills
30-day fills increased 34% from 2,823 in 2020 to 3,784 in 2024.
- 2020: 2,823
- 2021: 3,105
- 2022: 3,383
- 2023: 3,777
- 2024: 3,784
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Part D drug cost
Part D drug cost decreased 20% from $49,199 in 2020 to $39,205 in 2024.
- 2020: $49,199
- 2021: $48,679
- 2022: $73,460
- 2023: $68,518
- 2024: $39,205
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 Β· 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 |
|---|---|---|---|---|---|
| Tamsulosin Hcl | Tamsulosin Hcl | 534 | 50,925 | $10,404.39 | 192 |
| Finasteride | Finasteride | 326 | 32,400 | $5,078.84 | 127 |
| Trospium Chloride | Trospium Chloride | 125 | 5,466 | $3,619.71 | 43 |
| Terazosin Hcl | Terazosin Hcl | 117 | 11,450 | $5,170.13 | 41 |
| Insulin Syringe | Syringe And Needle,insulin,1ml | 60 | 1,776 | $425.94 | 22 |
| Methenamine Hippurate | Methenamine Hippurate | 37 | 3,490 | $3,697.44 | 20 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 31 | 220 | $202.77 | 26 |
| Cephalexin | Cephalexin | 30 | 945 | $425.67 | 24 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 23 | 545 | $444.56 | 18 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 22 | 166 | $206.32 | 20 |
| Doxazosin Mesylate | Doxazosin Mesylate | 18 | 1,090 | $207.03 | β |
| Potassium Citrate Er | Potassium Citrate | 18 | 1,030 | $1,118.03 | β |
| Myrbetriq | Mirabegron | 12 | 448 | $7,039.81 | β |
| Fosfomycin Tromethamine | Fosfomycin Tromethamine | 12 | 82 | $1,022.52 | 12 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 11 | 83 | $141.43 | β |
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
NUCC 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
I20111128000625
CA
9234303413
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
Permanente Medical Group Inc
901 Nevin Ave, Richmond, CA 948013143
Phone: 5103071500
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Pharmacist
Doctor of Pharmacy (Pharm.D.)
Physical Medicine & Rehabilitation
Doctor of Medicine (M.D.)
Physical Medicine & Rehabilitation - Neuromuscular Medicine
Doctor of Medicine (M.D.)
Pharmacist
Doctor of Pharmacy (Pharm.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Pharmacist
Career & Practice History
NPI enumerated July 02, 2007.
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
Mailing Address
200 Muir Rd
Martinez, CA 945534614