Shannon Marie Williams , ARNP
Nurse Practitioner • Walla Walla, WA
1412 Clarence Ave
Walla Walla, WA 993627246
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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Shannon Williams is listed in NPPES under Nurse Practitioner.
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NPI assigned on January 26, 2015; this date does not establish years in practice.
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Published CMS data list 1,782 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:
- 99308 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 1,182 service units.
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 473 service units.
- 99315 — Nursing facility discharge day management: 76 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 6 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 1,153 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:
- Furosemide — 73 prescription fills, including refills.
- Gabapentin — 59 prescription fills, including refills.
- Potassium Chloride — 50 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 47 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Walla Walla, WA (2024, 11 clinicians with data). Median for this group: 708. Middle half: 127 to 1,107.
More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: 234. Middle half: 84 to 502.
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 1,882 in 2020 to 1,782 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1412 Clarence Ave
Walla Walla, WA 993627246
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
239 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 $125,990 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 $94,771 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
1,160 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
$53,878 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: $837.97 across 3 records.
By nature of payment
- Consulting Fee: $682.50 across 1 record.
- Education: $99.00 across 1 record.
- Food and Beverage: $56.47 across 1 record.
Reporting-company totals
- Pfizer Inc.: $682.50 across 1 record.
- Exelixis Inc.: $99.00 across 1 record.
- Genmab U.S., Inc.: $56.47 across 1 record.
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
2015
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)
Shannon Williams 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 Shannon Williams 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
More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Walla Walla, WA (2024, 11 clinicians with data). Median for this group: 708. Middle half: 127 to 1,107.
More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: 234. Middle half: 84 to 502.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Nurse Practitioner in Walla Walla, WA (2024, 11 clinicians with data). Median for this group: $46,252. Middle half: $11,538 to $75,307.
A higher Medicare-allowed amount than 90% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: $18,362. Middle half: $7,179 to $35,594.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Nurse Practitioner in Walla Walla, WA (2024, 11 clinicians with data). Median for this group: $33,568. Middle half: $8,880 to $56,642.
A higher Medicare payment amount than 90% of clinicians listed under Nurse Practitioner in Washington (2024, 893 clinicians with data). Median for this group: $13,803. Middle half: $5,221 to $25,979.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Walla Walla, WA (2024, 11 clinicians with data). Median for this group: 761. Middle half: 307 to 1,035.
More Part D prescriptions than 75% of clinicians listed under Nurse Practitioner in Washington (2024, 1,099 clinicians with data). Median for this group: 277. Middle half: 74 to 877.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner in Walla Walla, WA (2024, 11 clinicians with data). Median for this group: $53,878. Middle half: $9,340 to $193,684.
A higher Part D drug cost than 65% of clinicians listed under Nurse Practitioner in Washington (2024, 1,099 clinicians with data). Median for this group: $11,694. Middle half: $1,114 to $110,470.
21 active clinicians are listed under Nurse Practitioner with a practice address in Walla Walla, WA (2,310 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Walla Walla
9.5% of these 21 clinicians have the CMS telehealth indicator.
57.1% of these 21 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: 1,882 in 2020 and 1,782 in 2024.
- 2020: 1,882
- 2021: 2,115
- 2022: 2,121
- 2023: 1,982
- 2024: 1,782
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $127,938 in 2020 and $125,990 in 2024.
- 2020: $127,938
- 2021: $132,624
- 2022: $129,342
- 2023: $136,406
- 2024: $125,990
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Paid by Medicare
Paid by Medicare stayed about the same: $96,134 in 2020 and $94,771 in 2024.
- 2020: $96,134
- 2021: $102,421
- 2022: $97,461
- 2023: $103,268
- 2024: $94,771
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 173% from 423 in 2020 to 1,153 in 2024.
- 2020: 423
- 2021: 502
- 2022: 829
- 2023: 1,378
- 2024: 1,153
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30-day fills
30-day fills increased 174% from 424 in 2020 to 1,160 in 2024.
- 2020: 424
- 2021: 502
- 2022: 833
- 2023: 1,378
- 2024: 1,160
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Part D drug cost
Part D drug cost increased 454% from $9,725 in 2020 to $53,878 in 2024.
- 2020: $9,725
- 2021: $10,871
- 2022: $51,876
- 2023: $63,325
- 2024: $53,878
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $77.99 in 2022 to $837.97 in 2025.
- 2022: $77.99
- 2023: $276.95
- 2024: $74.99
- 2025: $837.97
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 $837.97.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Consulting Fee
Cash or cash equivalent
|
ELREXFIO | General | $682.50 |
| Exelixis Inc. |
Education
In-kind items and services
|
— | General | $99.00 |
| Genmab U.S., Inc. |
Food and Beverage
In-kind items and services
|
Epkinly | General | $56.47 |
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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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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1,182 | 208 | $115.00 | $62.29 |
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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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473 | 185 | $145.00 | $90.07 |
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99315
Nursing facility discharge day management, 30 minutes or less
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76 | 72 | $105.00 | $68.17 |
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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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19 | 19 | $215.00 | $128.40 |
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99307
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes
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18 | 17 | $75.00 | $33.68 |
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99316
Nursing facility discharge management, more than 30 minutes
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14 | 14 | $140.00 | $109.51 |
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 |
|---|---|---|---|---|---|
| Furosemide | Furosemide | 73 | 2,097 | $558.25 | 16 |
| Gabapentin | Gabapentin | 59 | 1,533 | $1,236.26 | 12 |
| Potassium Chloride | Potassium Chloride | 50 | 1,431 | $967.85 | 14 |
| Atorvastatin Calcium | Atorvastatin Calcium | 49 | 1,448 | $804.81 | 11 |
| Lisinopril | Lisinopril | 48 | 1,398 | $535.42 | 15 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 45 | 475 | $994.18 | 11 |
| Losartan Potassium | Losartan Potassium | 45 | 1,319 | $700.99 | — |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 45 | 391 | $600.56 | — |
| Amlodipine Besylate | Amlodipine Besylate | 40 | 1,200 | $369.20 | — |
| Metformin Hcl | Metformin Hcl | 38 | 1,089 | $735.87 | — |
| Metoprolol Succinate | Metoprolol Succinate | 34 | 946 | $817.01 | 14 |
| Sertraline Hcl | Sertraline Hcl | 30 | 894 | $748.18 | — |
| Baclofen | Baclofen | 26 | 716 | $799.96 | — |
| Levothyroxine Sodium | Levothyroxine Sodium | 26 | 758 | $364.25 | — |
| Donepezil Hcl | Donepezil Hcl | 23 | 671 | $312.00 | — |
| Fentanyl | Fentanyl | 22 | 342 | $1,042.51 | — |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 22 | 230 | $564.94 | — |
| Xarelto | Rivaroxaban | 22 | 301 | $6,479.68 | — |
| Oxycodone Hcl | Oxycodone Hcl | 22 | 157 | $481.90 | — |
| Eliquis | Apixaban | 22 | 323 | $6,906.44 | — |
| Carvedilol | Carvedilol | 21 | 630 | $443.14 | — |
| Lorazepam | Lorazepam | 21 | 219 | $224.58 | 14 |
| Duloxetine Hcl | Duloxetine Hcl | 21 | 578 | $898.76 | — |
| Buspirone Hcl | Buspirone Hcl | 20 | 571 | $498.27 | — |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 20 | 95 | $113.58 | 15 |
(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
Self-certified to NPPES: 2023-06-06NUCC 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: 163W00000X
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20170329001334
WA
7810272101
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1412 CLARENCE AVE, WALLA WALLA, WA 993627246 (Tel: 5039278521)
NPI status registered as active in NPPES database
Registered at 55 W TIETAN ST, WALLA WALLA, WA 993624445 (Tel: 5095253720)
Registered at 55 W TIETAN ST, WALLA WALLA, WA 993624445 (Tel: 5095253720)
Recorded as SHANNON WILLIAMS, ARNP
Registered Nurse (license number reported to NPPES: OR 200642784RN)
Registered at 1943 S BERNARD ST, WALLA WALLA, WA 993625030 (Tel: 5039278521)
Registered at 1943 S BERNARD ST, WALLA WALLA, WA 993625030 (Tel: 5039278521)
NPI status registered as active in NPPES database
Registered at 4531 SE BELMONT ST STE 100, PORTLAND, OR 972151675 (Tel: 5032156556)
Registered at 4531 SE BELMONT ST STE 100, PORTLAND, OR 972151675 (Tel: 5032156556)
Recorded as SHANNON WILLIAMS, RN
Registered Nurse (license number reported to NPPES: OR 200642784RN)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Walla Walla
- Chelane Fackenthall, ARNP
- Lauren Berg, ARNP
- Judith Raboy, NP
- Alissa Ralston, ARNP
- Angela Marroquin, MSN, FNP, ARNP
- Donna Lin
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Directory navigation, in NPI number order.
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- Joshua Agbunag, PharmD Pharmacist · Moses Lake
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Mailing Address
55 W Tietan St
Walla Walla, WA 993624445
Phone: 5095253720