Karlene Hertle Bert , NURSE PRACTITIONER
Nurse Practitioner • Modesto, CA
1878 E Hatch Rd
Modesto, CA 953515002
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 24, 2007; this date does not establish years in practice.
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Published CMS data list 1,914 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99349 — Residence visit for established patient with moderate level of medical decision making, per day: 1,247 service units.
- 99350 — Residence visit for established patient with high level of medical decision making, per day: 469 service units.
- G0008 — Administration of influenza virus vaccine: 100 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® 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 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 10,154 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:
- Atorvastatin Calcium — 720 prescription fills, including refills.
- Levothyroxine Sodium — 697 prescription fills, including refills.
- Alendronate Sodium — 680 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 128 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Modesto, CA (2024, 29 clinicians with data). Median for this group: 245. Middle half: 61 to 751.
More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: 201. Middle half: 73 to 538.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,798 in 2020 to 1,914 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1878 E Hatch Rd
Modesto, CA 953515002
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 patients
182 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 – by Provider, 2024.
Medicare-allowed amount
About $215,011 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 – by Provider and Service, 2024.
Paid by Medicare
About $163,771 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 – by Provider and Service, 2024.
30-day fills
10,315 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
$2,343,754 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 2025
All general payments: $265.99 across 8 records.
By nature of payment
- Food and Beverage: $265.99 across 8 records.
Reporting-company totals
- AstraZeneca Pharmaceuticals LP: $165.92 across 4 records.
- Viatris Specialty LLC: $100.07 across 4 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 2025 (published June 30, 2026).
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.
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.
Enrolled in Medicare (PECOS)
Karlene Bert 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 Karlene Bert 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 B services
More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Modesto, CA (2024, 29 clinicians with data). Median for this group: 245. Middle half: 61 to 751.
More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: 201. Middle half: 73 to 538.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Modesto, CA (2024, 29 clinicians with data). Median for this group: $28,170. Middle half: $7,312 to $84,129.
A higher Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: $18,428. Middle half: $6,851 to $46,917.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Modesto, CA (2024, 29 clinicians with data). Median for this group: $22,158. Middle half: $5,826 to $60,248.
A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in California (2024, 2,070 clinicians with data). Median for this group: $13,640. Middle half: $4,992 to $34,836.
Medicare Part D prescriptions
More Part D prescriptions than 95% 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.
More Part D prescriptions than 95% 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
A higher Part D drug cost than 95% of 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.
A higher Part D drug cost than 95% of 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.
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 stayed about the same: 1,798 in 2020 and 1,914 in 2024.
- 2020: 1,798
- 2021: 1,614
- 2022: 1,841
- 2023: 1,785
- 2024: 1,914
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $215,783 in 2020 and $215,011 in 2024.
- 2020: $215,783
- 2021: $239,686
- 2022: $273,132
- 2023: $220,815
- 2024: $215,011
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Paid by Medicare
Paid by Medicare stayed about the same: $165,915 in 2020 and $163,771 in 2024.
- 2020: $165,915
- 2021: $186,334
- 2022: $214,125
- 2023: $171,385
- 2024: $163,771
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 10,144 in 2020 and 10,154 in 2024.
- 2020: 10,144
- 2021: 10,120
- 2022: 9,140
- 2023: 9,783
- 2024: 10,154
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30-day fills
30-day fills decreased 10% from 11,499 in 2020 to 10,315 in 2024.
- 2020: 11,499
- 2021: 11,557
- 2022: 9,462
- 2023: 10,015
- 2024: 10,315
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Part D drug cost
Part D drug cost increased 180% from $838,410 in 2020 to $2,343,754 in 2024.
- 2020: $838,410
- 2021: $792,068
- 2022: $769,340
- 2023: $1,629,779
- 2024: $2,343,754
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $221.94 in 2021 to $265.99 in 2025.
- 2021: $221.94
- 2022: $200.70
- 2023: $525.66
- 2024: $280.98
- 2025: $265.99
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 · 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 – December 31, 2025): fewer than 11 records totaling $265.99.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $98.52 |
| Viatris Specialty LLC |
Food and Beverage
In-kind items and services
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YUPELRI | General | $32.09 |
| Viatris Specialty LLC |
Food and Beverage
In-kind items and services
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YUPELRI | General | $29.29 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $23.62 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $23.36 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $20.42 |
| Viatris Specialty LLC |
Food and Beverage
In-kind items and services
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YUPELRI | General | $19.44 |
| Viatris Specialty LLC |
Food and Beverage
In-kind items and services
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YUPELRI | General | $19.25 |
Source: CMS Open Payments, program year 2025, 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 2016–2023 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, 2017–2024; 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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99349
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes
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1,247 | 164 | $205.04 | $107.36 |
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99350
Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes
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469 | 54 | $249.52 | $155.96 |
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G0008
Administration of influenza virus vaccine
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100 | 94 | $30.00 | $29.40 |
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90662
Influenza vaccine split virus, preservative free
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52 | 48 | $82.12 | $78.97 |
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90688
Influenza vaccine, quadrivalent, 0.5 ml dosage
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46 | 44 | $75.00 | $20.46 |
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 720 | 21,600 | $9,785.46 | 82 |
| Levothyroxine Sodium | Levothyroxine Sodium | 697 | 20,878 | $8,919.47 | 72 |
| Alendronate Sodium | Alendronate Sodium | 680 | 19,061 | $7,105.46 | 73 |
| Losartan Potassium | Losartan Potassium | 417 | 12,501 | $4,940.58 | 50 |
| Pantoprazole Sodium | Pantoprazole Sodium | 379 | 11,295 | $5,342.52 | 42 |
| Fenofibrate | Fenofibrate | 334 | 10,021 | $9,485.37 | 30 |
| Metformin Hcl | Metformin Hcl | 301 | 9,030 | $3,092.67 | 36 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 254 | 6,632 | $13,782.49 | 51 |
| Atenolol | Atenolol | 221 | 6,621 | $1,854.80 | 25 |
| Vascepa | Icosapent Ethyl | 219 | 6,570 | $76,748.41 | 28 |
| Gabapentin | Gabapentin | 214 | 6,399 | $2,565.65 | 26 |
| Simvastatin | Simvastatin | 201 | 6,030 | $1,952.41 | 17 |
| Tezspire | Tezepelumab-Ekko | 187 | 5,258 | $726,559.68 | 24 |
| Tamsulosin Hcl | Tamsulosin Hcl | 182 | 5,434 | $5,041.30 | 19 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 179 | 4,562 | $4,217.90 | 82 |
| Omeprazole | Omeprazole | 159 | 4,770 | $1,866.64 | 21 |
| Arnuity Ellipta | Fluticasone Furoate | 153 | 4,590 | $37,728.27 | 22 |
| Furosemide | Furosemide | 151 | 4,501 | $874.89 | 21 |
| Amlodipine Besylate | Amlodipine Besylate | 148 | 4,440 | $1,361.71 | 21 |
| Ventolin Hfa | Albuterol Sulfate | 146 | 4,246 | $9,026.70 | 29 |
| Gemfibrozil | Gemfibrozil | 131 | 3,930 | $2,858.62 | 11 |
| Linzess | Linaclotide | 130 | 3,900 | $78,802.98 | 14 |
| Ivermectin | Ivermectin | 130 | 1,811 | $9,154.82 | 96 |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 123 | 3,395 | $41,727.44 | — |
| Famotidine | Famotidine | 107 | 3,210 | $1,165.52 | 12 |
(top 25 shown)
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20040224001357
CA
0749176907
Sources: 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.
Family Medicine
Doctor of Medicine (M.D.)
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 24, 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
Other Nurse Practitioners in Modesto
- Agatha Covarrubias, NP
- Darienne Marcetti, NP
- Kellie Amador, MSN
- Poonam Chandra, NP
- Jagmohan Ghotra, NP
- Ma Renee Holcomb, NP
More public profiles in California
Directory navigation, in NPI number order.
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- Jonathan Song, DDS Dentist - General Practice · Anaheim
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Mailing Address
Po Box 576649
Modesto, CA 953576649
Phone: 2095718330