Kassandra Michelle Hardtke , PA-C
Physician Assistant โข Mesa, AZ
1500 S Dobson Rd Ste 202
Mesa, AZ 852024724
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Kassandra Hardtke is listed in NPPES under Physician Assistant.
-
NPI assigned on September 13, 2021; this date does not establish years in practice.
-
Published CMS data list 463 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 72100 โ X-ray of lower and sacral spine, 2-3 views: 102 service units.
- 99213 โ Established patient outpatient office visit: 102 service units.
- 99214 โ Established patient outpatient office visit: 96 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 9 records in the table ยท Guide: How to read Medicare Part B data
-
Published CMS data list 493 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.
-
Published Part D records, 2024:
- Gabapentin โ 158 prescription fills, including refills.
- Cyclobenzaprine Hcl โ 79 prescription fills, including refills.
- Oxycodone Hcl โ 66 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 9 records in the table ยท Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 70% of clinicians listed under Physician Assistant in Mesa, AZ (2024, 134 clinicians with data). Median for this group: 170. Middle half: 72 to 480.
More Medicare Part B services than 60% of clinicians listed under Physician Assistant in Arizona (2024, 1,724 clinicians with data). Median for this group: 275. Middle half: 92 to 797.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 166 in 2022 to 463 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022โ2024.
Practice Location & Contact Primary Location
1500 S Dobson Rd Ste 202
Mesa, AZ 852024724
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: Center For Orthopedic Research And Education Llc. 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
2021
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
177 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 โ by Provider, 2024.
Medicare-allowed amount
About $32,929 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 โ by Provider and Service, 2024.
Paid by Medicare
About $23,225 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 โ by Provider and Service, 2024.
30-day fills
509 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
$4,195 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)
Fewer than 11 payment records totaling $31.13 in 2024
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2024.
Years since graduation
5 years (graduated 2021)
CMS Doctors and Clinicians data list 2021 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
2021
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
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)
Kassandra Hardtke 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 Kassandra Hardtke 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 Mesa and Arizona
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 70% of clinicians listed under Physician Assistant in Mesa, AZ (2024, 134 clinicians with data). Median for this group: 170. Middle half: 72 to 480.
More Medicare Part B services than 60% of clinicians listed under Physician Assistant in Arizona (2024, 1,724 clinicians with data). Median for this group: 275. Middle half: 92 to 797.
Medicare-allowed amount
A higher Medicare-allowed amount than 70% of clinicians listed under Physician Assistant in Mesa, AZ (2024, 134 clinicians with data). Median for this group: $14,747. Middle half: $5,878 to $34,258.
A higher Medicare-allowed amount than 60% of clinicians listed under Physician Assistant in Arizona (2024, 1,724 clinicians with data). Median for this group: $21,104. Middle half: $7,577 to $48,477.
Paid by Medicare
A higher Medicare payment amount than 70% of clinicians listed under Physician Assistant in Mesa, AZ (2024, 134 clinicians with data). Median for this group: $10,717. Middle half: $4,472 to $25,490.
A higher Medicare payment amount than 60% of clinicians listed under Physician Assistant in Arizona (2024, 1,724 clinicians with data). Median for this group: $15,425. Middle half: $5,570 to $36,295.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Physician Assistant in Mesa, AZ (2024, 144 clinicians with data). Median for this group: 226. Middle half: 82 to 801.
More Part D prescriptions than 60% of clinicians listed under Physician Assistant in Arizona (2024, 1,917 clinicians with data). Median for this group: 260. Middle half: 86 to 858.
Part D drug cost
Close to the middle for clinicians listed under Physician Assistant in Mesa, AZ (2024, 144 clinicians with data). Median for this group: $2,540. Middle half: $652 to $59,653.
Close to the middle for clinicians listed under Physician Assistant in Arizona (2024, 1,917 clinicians with data). Median for this group: $4,301. Middle half: $765 to $83,048.
472 active clinicians are listed under Physician Assistant with a practice address in Mesa, AZ (3,673 in Arizona).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mesa
8.3% of these 472 clinicians have the CMS telehealth indicator.
37.1% of these 472 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.
-
Medicare Part B services
Medicare Part B services increased 179% from 166 in 2022 to 463 in 2024.
- 2022: 166
- 2023: 171
- 2024: 463
-
Medicare-allowed amount
Medicare-allowed amount increased 62% from $20,276 in 2022 to $32,929 in 2024.
- 2022: $20,276
- 2023: $20,026
- 2024: $32,929
-
Paid by Medicare
Paid by Medicare increased 30% from $17,806 in 2022 to $23,225 in 2024.
- 2022: $17,806
- 2023: $16,403
- 2024: $23,225
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 695% from 62 in 2022 to 493 in 2024.
- 2022: 62
- 2023: 76
- 2024: 493
-
30-day fills
30-day fills increased 721% from 62 in 2022 to 509 in 2024.
- 2022: 62
- 2023: 76
- 2024: 509
-
Part D drug cost
Part D drug cost went from $325 in 2022 to $4,195 in 2024.
- 2022: $325
- 2023: $552
- 2024: $4,195
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $53.21 in 2023 to $31.13 in 2024.
- 2023: $53.21
- 2024: $31.13
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (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.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2024 (payments made January 1 โ December 31, 2024): fewer than 11 records totaling $31.13.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
UNID_PASS | General | $31.13 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021โ2023 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, 2022โ2024; 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 |
|---|---|---|---|---|
|
72100
X-ray of lower and sacral spine, 2-3 views
|
102 | 90 | $97.00 | $32.34 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
102 | 76 | $224.58 | $73.78 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
96 | 75 | $318.98 | $103.81 |
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
47 | 47 | $413.23 | $135.18 |
|
72040
X-ray of upper spine, 2-3 views
|
40 | 31 | $96.18 | $31.56 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
25 | 25 | $276.05 | $91.63 |
|
22853
Insertion of cage or mesh device to spine bone and disc space during spine fusion
|
24 | 16 | $86.82 | $32.99 |
|
G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
|
16 | 16 | $46.89 | $13.48 |
|
63047
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment
|
11 | 11 | $372.02 | $111.32 |
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 |
|---|---|---|---|---|---|
| Gabapentin | Gabapentin | 158 | 5,065 | $1,697.22 | 81 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 79 | 2,114 | $730.61 | 60 |
| Oxycodone Hcl | Oxycodone Hcl | 66 | 599 | $404.20 | 44 |
| Methylprednisolone | Methylprednisolone | 51 | 305 | $384.54 | 51 |
| Tramadol Hcl | Tramadol Hcl | 46 | 472 | $141.28 | 31 |
| Pregabalin | Pregabalin | 39 | 1,170 | $442.10 | 26 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 23 | 243 | $312.11 | 21 |
| Meloxicam | Meloxicam | 19 | 600 | $22.93 | โ |
| Tizanidine Hcl | Tizanidine Hcl | 12 | 167 | $59.80 | 11 |
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: 2025-08-13NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20230823000726
AZ
2567856396
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
Center For Orthopedic Research And Education Llc
10494 W Thunderbird Blvd, Sun City, AZ 853516122
Phone: 8669742673
Center For Orthopedic Research And Education Llc
14520 W Granite Valley Dr, Sun City West, AZ 853755855
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
Physician Assistant (Certified)
Physician Assistant
Physician Assistant (Certified)
Physical Medicine & Rehabilitation
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner
Physician Assistant - Surgical
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1500 S DOBSON RD STE 202, MESA, AZ 852024724 (Tel: 8669742673)
Registered at 18444 N 25TH AVE STE 310, PHOENIX, AZ 850231266 (Tel: 6697426738)
Registered at 1611 LAKE SUPERIOR RD APT 104, VALPARAISO, IN 463836228 (Tel: 7086738226)
Recorded as KASSANDRA HARDTKE, PA-C
Physician Assistant (license number reported to NPPES: IN 10003485A)
NPI status registered as active in NPPES database
Registered at 8701 BROADWAY, MERRILLVILLE, IN 464107035 (Tel: 2197385500)
Registered at 1575 BENTON ST, CRETE, IL 604173132 (Tel: 7086738226)
Recorded as KASSANDRA KERNAGIS, PA-C
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Mesa
- Jordan Breisch, PA-C
- Julia Scott, PA-C
- Kassondra Mellen, PHYSICIAN ASSISTANT
- Tracy Vincent, PA-C
- Jacob Layfield
- Jessica Dettra, PA
Mailing Address
18444 N 25th Ave Ste 310
Phoenix, AZ 850231266
Phone: 6697426738