Karen Fields , PA, NP
Nurse Practitioner • Modesto, CA
Valley Wound Healing Center, 4335a Nstarway
Modesto, CA 95356
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 December 1, 2006; this date does not establish years in practice.
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Published CMS data list 1,307 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Published rows only; this is not a quality measure.
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Published Part B service records, 2020:
- 99214 — Established patient outpatient office visit: 826 service units.
- 29581 — Application of vein wound compression bandages on lower leg, ankle, and foot: 423 service units.
- 97597 — Removal of tissue from wound, 20.0 sq cm or less: 39 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See all 4 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 74 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:
- Levothyroxine Sodium — 34 prescription fills, including refills.
- Progesterone (Progesterone, Micronized) — 16 prescription fills, including refills.
- Atorvastatin Calcium — 12 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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Fewer Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Modesto, CA (2024, 46 clinicians with data). Median for this group: 368. Middle half: 91 to 1,347.
Fewer Part D prescriptions than 70% of clinicians listed under Nurse Practitioner in California (2024, 3,221 clinicians with data). Median for this group: 248. Middle half: 63 to 852.
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 B services went from 720 in 2019 to 1,307 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019–2020.
Practice Location & Contact Primary Location
Valley Wound Healing Center
4335a Nstarway
Modesto, CA 95356
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $129,533 in 2020
The total amount Medicare approved for these services in 2020. 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 – by Provider and Service, 2020.
Paid by Medicare
About $102,563 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, 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 – by Provider and Service, 2020.
30-day fills
127 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
$8,255 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.
Open Payments general payments, program year 2022
All general payments: $40.32 across 2 records.
By nature of payment
- Food and Beverage: $40.32 across 2 records.
Reporting-company totals
- ABBVIE INC.: $40.32 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2022 (published June 30, 2026).
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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.
Can order Medicare-covered services
CMS lists Karen Fields 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 Modesto and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Modesto, CA (2024, 46 clinicians with data). Median for this group: 368. Middle half: 91 to 1,347.
Fewer Part D prescriptions than 70% of clinicians listed under Nurse Practitioner in California (2024, 3,221 clinicians with data). Median for this group: 248. Middle half: 63 to 852.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner in Modesto, CA (2024, 46 clinicians with data). Median for this group: $11,121. Middle half: $938 to $68,270.
Close to the middle for clinicians listed under Nurse Practitioner in California (2024, 3,221 clinicians with data). Median for this group: $13,982. Middle half: $995 to $121,041.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Karen Fields are from 2020.
93 active clinicians are listed under Nurse Practitioner with a practice address in Modesto, CA (8,237 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Modesto
14% of these 93 clinicians have the CMS telehealth indicator.
38.7% of these 93 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 82% from 720 in 2019 to 1,307 in 2020.
- 2019: 720
- 2020: 1,307
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Medicare-allowed amount
Medicare-allowed amount increased 49% from $86,691 in 2019 to $129,533 in 2020.
- 2019: $86,691
- 2020: $129,533
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Paid by Medicare
Paid by Medicare increased 48% from $69,069 in 2019 to $102,563 in 2020.
- 2019: $69,069
- 2020: $102,563
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 12 in 2020 to 74 in 2024.
- 2020: 12
- 2021: 5,908
- 2022: 7,563
- 2023: 4,485
- 2024: 74
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30-day fills
30-day fills went from 12 in 2020 to 127 in 2024.
- 2020: 12
- 2021: 6,013
- 2022: 7,647
- 2023: 4,537
- 2024: 127
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Part D drug cost
Part D drug cost went from $234 in 2020 to $8,255 in 2024.
- 2020: $234
- 2021: $411,479
- 2022: $699,908
- 2023: $495,630
- 2024: $8,255
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $33.71 in 2021 to $40.32 in 2022.
- 2021: $33.71
- 2022: $40.32
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2022), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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 2022 (payments made January 1 – December 31, 2022): fewer than 11 records totaling $40.32.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $22.33 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $17.99 |
Source: CMS Open Payments, program year 2022, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2019 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 – by Provider and Service data, 2019–2020; 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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826 | 95 | $140.00 | $95.85 |
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29581
Application of vein wound compression bandages on lower leg, ankle, and foot
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423 | 61 | $220.00 | $102.83 |
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97597
Removal of tissue from wound, 20.0 sq cm or less
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39 | 19 | $115.00 | $87.08 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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19 | 19 | $255.00 | $182.50 |
Source: CMS Part B by Provider and Service, 2020; 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 |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 34 | 2,019 | $480.83 | 15 |
| Progesterone | Progesterone, Micronized | 16 | 890 | $557.09 | — |
| Atorvastatin Calcium | Atorvastatin Calcium | 12 | 462 | $478.34 | — |
| Eliquis | Apixaban | 12 | 329 | $6,738.97 | — |
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: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
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.
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 PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Nurse Practitioner
Nurse Practitioner - Adult Health
Nurse Practitioner - Family
Family Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at VALLEY WOUND HEALING CENTER, 4335A NSTARWAY, MODESTO, CA 95356 (Tel: 2093425125)
Registered at 31343 LONE TREE ROAD, OAKDALE, CA 95361 (Tel: 2098474422)
Recorded as KAREN FIELDS, PA, NP
Physician Assistant
NPI status registered as active in NPPES database
Registered at 1441 FLORIDA AVE, MODESTO, CA 953504405 (Tel: 2095781211)
Registered at 1216 HOLLENBECK CT, OAKDALE, CA 953614506 (Tel: 2098474422)
Recorded as KAREN FIELDS
Physician Assistant (license number reported to NPPES: CA 15798)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Modesto
- Jane Joseph
- Tilksew Tedla
- Nicole Davis-Marenco, FNP
- Christine Roque, NP
- Simranjeet Grewal
- Aurora Mejia, F10210880 FNP NP-C
Mailing Address
31343 Lone Tree Road
Oakdale, CA 95361
Phone: 2098474422