Stephanie Carnes , PA-C
Physician Assistant โข Fremont, CA
2000 Mowry Ave
Fremont, CA 945381716
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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Stephanie Carnes is listed in NPPES under Physician Assistant.
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NPI assigned on October 27, 2017; this date does not establish years in practice.
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Published CMS data list 86 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 99214 โ Established patient outpatient office visit: 33 service units.
- 73562 โ X-ray of knee, 3 views: 29 service units.
- 99213 โ Established patient outpatient office visit: 13 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See all 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 518 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:
- Ondansetron Odt (Ondansetron) โ 141 prescription fills, including refills.
- Oxycodone Hcl โ 103 prescription fills, including refills.
- Omeprazole โ 76 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 all 10 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Fremont, CA (2024, 44 clinicians with data). Median for this group: 141. Middle half: 42 to 459.
More Part D prescriptions than 65% 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 โ by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 46 in 2017 to 86 in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2017โ2021.
Practice Location & Contact Primary Location
2000 Mowry Ave
Fremont, CA 945381716
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
2017
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $6,484 in 2021
The total amount Medicare approved for these services in 2021. 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, 2021.
Paid by Medicare
About $3,087 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, 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, 2021.
30-day fills
522 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
$6,105 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)
No Open Payments records are listed for this clinician for 2021โ2025.
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)
Stephanie Carnes 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 Stephanie Carnes 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 Fremont and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Fremont, CA (2024, 44 clinicians with data). Median for this group: 141. Middle half: 42 to 459.
More Part D prescriptions than 65% 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 higher Part D drug cost than 60% of clinicians listed under Physician Assistant in Fremont, CA (2024, 44 clinicians with data). Median for this group: $2,392. Middle half: $879 to $16,856.
Close to the middle for 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.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Stephanie Carnes are from 2021.
78 active clinicians are listed under Physician Assistant with a practice address in Fremont, CA (14,458 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Fremont
16.7% of these 78 clinicians have the CMS telehealth indicator.
64.1% of these 78 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 87% from 46 in 2017 to 86 in 2021.
- 2017: 46
- 2018: 2,523
- 2019: 3,016
- 2020: 2,612
- 2021: 86
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Medicare-allowed amount
Medicare-allowed amount increased 203% from $2,140 in 2017 to $6,484 in 2021.
- 2017: $2,140
- 2018: $158,770
- 2019: $165,722
- 2020: $144,326
- 2021: $6,484
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Paid by Medicare
Paid by Medicare increased 81% from $1,705 in 2017 to $3,087 in 2021.
- 2017: $1,705
- 2018: $117,614
- 2019: $122,090
- 2020: $106,154
- 2021: $3,087
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 55% from 1,148 in 2020 to 518 in 2024.
- 2020: 1,148
- 2021: 438
- 2022: 533
- 2023: 166
- 2024: 518
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30-day fills
30-day fills decreased 56% from 1,180 in 2020 to 522 in 2024.
- 2020: 1,180
- 2021: 448
- 2022: 536
- 2023: 170
- 2024: 522
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Part D drug cost
Part D drug cost decreased 65% from $17,213 in 2020 to $6,105 in 2024.
- 2020: $17,213
- 2021: $6,041
- 2022: $6,941
- 2023: $1,963
- 2024: $6,105
Sources: CMS Medicare Physician & Other Practitioners (2021), 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 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 2016โ2020 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, 2017โ2021; 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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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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33 | 33 | $220.00 | $95.91 |
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73562
X-ray of knee, 3 views
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29 | 23 | $31.00 | $9.08 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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13 | 13 | $180.00 | $64.81 |
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27447
Replacement of knee joint, both sides of knee
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11 | 11 | $1963.64 | $201.16 |
Source: CMS Part B by Provider and Service, 2021; 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 |
|---|---|---|---|---|---|
| Ondansetron Odt | Ondansetron | 141 | 838 | $1,005.40 | 133 |
| Oxycodone Hcl | Oxycodone Hcl | 103 | 690 | $1,729.38 | 89 |
| Omeprazole | Omeprazole | 76 | 2,128 | $471.05 | 69 |
| Ibuprofen | Ibuprofen | 63 | 1,803 | $769.60 | 63 |
| Tramadol Hcl | Tramadol Hcl | 38 | 257 | $297.60 | 37 |
| Celecoxib | Celecoxib | 31 | 862 | $293.14 | 28 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 25 | 127 | $307.12 | 23 |
| Naloxone Hcl | Naloxone Hcl | 18 | 511 | $899.22 | 17 |
| Meloxicam | Meloxicam | 12 | 360 | $81.32 | โ |
| Nabumetone | Nabumetone | 11 | 380 | $251.48 | โ |
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
I20171205003064
CA
4385901073
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.
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.)
Internal Medicine - Critical Care Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Emergency Medicine
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Career & Practice History
NPI enumerated October 27, 2017.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from November 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Fremont
- Caitlin Reid, PA
- Omar Ibarra
- Hinal Parikh
- Keith Jeffrey, PA-C
- Veronica Caballero, PA-C
- Robert Gentile, PA-C
Mailing Address
2000 Mowry Ave
Fremont, CA 945381716
Phone: 5108187210