Corey Carson , PA
Physician Assistant • Walla Walla, WA
301 W Poplar St
Walla Walla, WA 993622858
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 February 2, 2018; this date does not establish years in practice.
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Published CMS data list 386 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:
- 99214 — Established patient outpatient office visit: 109 service units.
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 60 service units.
- 99204 — New patient outpatient office visit: 59 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 9 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 16 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:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 16 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 the full table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Physician Assistant in Walla Walla, WA (2024, 12 clinicians with data). Median for this group: 410. Middle half: 259 to 1,404.
More Medicare Part B services than 65% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: 218. Middle half: 77 to 474.
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 840 in 2020 to 386 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
301 W Poplar St
Walla Walla, WA 993622858
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Tacoma, WA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
169 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 $41,015 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 $30,384 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
16 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
$152 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $24.04 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.
NPI first issued
2018
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)
Corey Carson 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 Corey Carson 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 Walla Walla and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Physician Assistant in Walla Walla, WA (2024, 12 clinicians with data). Median for this group: 410. Middle half: 259 to 1,404.
More Medicare Part B services than 65% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: 218. Middle half: 77 to 474.
Medicare-allowed amount
Close to the middle for clinicians listed under Physician Assistant in Walla Walla, WA (2024, 12 clinicians with data). Median for this group: $38,774. Middle half: $13,205 to $104,497.
A higher Medicare-allowed amount than 80% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: $16,952. Middle half: $6,879 to $34,613.
Paid by Medicare
Close to the middle for clinicians listed under Physician Assistant in Walla Walla, WA (2024, 12 clinicians with data). Median for this group: $28,605. Middle half: $10,461 to $73,281.
A higher Medicare payment amount than 80% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: $12,488. Middle half: $4,857 to $25,122.
Medicare Part D prescriptions
Fewer Part D prescriptions than 95% of clinicians listed under Physician Assistant in Walla Walla, WA (2024, 12 clinicians with data). Median for this group: 573. Middle half: 223 to 858.
Fewer Part D prescriptions than 90% of clinicians listed under Physician Assistant in Washington (2024, 2,001 clinicians with data). Median for this group: 244. Middle half: 75 to 797.
Part D drug cost
A lower Part D drug cost than 95% of clinicians listed under Physician Assistant in Walla Walla, WA (2024, 12 clinicians with data). Median for this group: $31,588. Middle half: $5,548 to $122,509.
A lower Part D drug cost than 90% of clinicians listed under Physician Assistant in Washington (2024, 2,001 clinicians with data). Median for this group: $4,328. Middle half: $751 to $64,764.
28 active clinicians are listed under Physician Assistant with a practice address in Walla Walla, WA (3,718 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Walla Walla
3.6% of these 28 clinicians have the CMS telehealth indicator.
64.3% of these 28 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 decreased 54% from 840 in 2020 to 386 in 2024.
- 2020: 840
- 2021: 848
- 2022: 720
- 2023: 761
- 2024: 386
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Medicare-allowed amount
Medicare-allowed amount decreased 31% from $59,190 in 2020 to $41,015 in 2024.
- 2020: $59,190
- 2021: $67,399
- 2022: $59,644
- 2023: $57,923
- 2024: $41,015
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Paid by Medicare
Paid by Medicare decreased 32% from $44,428 in 2020 to $30,384 in 2024.
- 2020: $44,428
- 2021: $51,912
- 2022: $40,872
- 2023: $40,301
- 2024: $30,384
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 91% from 174 in 2020 to 16 in 2024.
- 2020: 174
- 2021: 133
- 2022: 143
- 2023: 71
- 2024: 16
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30-day fills
30-day fills decreased 94% from 248 in 2020 to 16 in 2024.
- 2020: 248
- 2021: 196
- 2022: 171
- 2023: 81
- 2024: 16
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Part D drug cost
Part D drug cost decreased 94% from $2,455 in 2020 to $152 in 2024.
- 2020: $2,455
- 2021: $2,815
- 2022: $2,628
- 2023: $1,107
- 2024: $152
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $30.44 in 2021 to $24.04 in 2024.
- 2021: $30.44
- 2022: $132.40
- 2024: $24.04
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 · 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 – December 31, 2024): fewer than 11 records totaling $24.04.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Curonix LLC |
Food and Beverage
In-kind items and services
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PNS FREEDOM-4A PERMANENT NEUROSTIMULATOR RECEIVER KIT CHANNEL A | General | $24.04 |
Source: CMS Open Payments, program year 2024, 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 2017–2023 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, 2018–2024; 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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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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109 | 62 | $453.39 | $106.98 |
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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60 | 32 | $197.00 | $90.32 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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59 | 59 | $589.54 | $136.98 |
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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47 | 15 | $197.00 | $90.32 |
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99310
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
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32 | 28 | $290.00 | $128.73 |
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72110
X-ray of lower and sacral spine, minimum of 4 views
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23 | 23 | $450.52 | $41.10 |
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72148
Mri scan of lower spinal canal without contrast
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21 | 21 | $1401.09 | $104.14 |
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99310
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
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20 | 20 | $290.00 | $128.73 |
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99344
Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes
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15 | 15 | $387.00 | $118.79 |
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 |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 16 | 120 | $152.15 | — |
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: 2024-10-11NUCC 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
I20180222000617
WA
8022379619
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
630 N Fairview Dr
Tacoma, WA 984061015
Phone: 5327771423
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physical Medicine & Rehabilitation
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as COREY CARSON, PA
NPI status registered as active in NPPES database
Registered at 301 W POPLAR ST, WALLA WALLA, WA 993622858 (Tel: 5098978959)
Registered at 301 W POPLAR ST STE 220, WALLA WALLA, WA 993622800 (Tel: 5098978959)
Recorded as COREY CARSON
Physician Assistant (license number reported to NPPES: WA PA60824929)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Walla Walla
- Thomas Shaver, PA-C
- Douglas West, PA-C
- Benjamin Nichols
- Kate Hogan
- Derek Sucharda, PA-C
- Mark Coram, PA-C
Mailing Address
301 W Poplar St Ste 220
Walla Walla, WA 993622800
Phone: 5098978959