Dr. Allison J. Porter , MD
Surgery • Mount Vernon, WA
1400 E. Kincade Street
Mount Vernon, WA 982744127
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on March 31, 2009; this date does not establish years in practice.
-
Published CMS data list 257 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.
-
Published Part B service records, 2024:
- 99204 — New patient outpatient office visit: 77 service units.
- 99214 — Established patient outpatient office visit: 73 service units.
- 43239 — Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope: 32 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 8 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 118 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.
-
Published Part D records, 2024:
- Oxycodone Hcl — 36 prescription fills, including refills.
- Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) — 33 prescription fills, including refills.
- Omeprazole — 25 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
-
More Medicare Part B services than 80% of clinicians listed under Surgery in Washington (2024, 325 clinicians with data). Median for this group: 116. Middle half: 63 to 221.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 269 in 2020 to 257 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1400 E. Kincade Street
Mount Vernon, WA 982744127
CMS Doctors and Clinicians lists 1 group name: Public Hospital Dist No 1 Skagit. 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
University Of Washington School Of Medicine
2009
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
202 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 $29,199 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 $21,699 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
122 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
$3,113 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: $10,575.44 across 18 records.
By nature of payment
- Education: $8,000.00 across 3 records.
- Travel and Lodging: $2,411.96 across 9 records.
- Food and Beverage: $163.48 across 6 records.
Reporting-company totals
- INTUITIVE SURGICAL, INC.: $8,008.99 across 4 records.
- Globus Medical, Inc.: $2,566.45 across 14 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).
Years since graduation
17 years (graduated 2009)
CMS Doctors and Clinicians data list 2009 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
2009
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, “Does your provider accept Medicare as full payment?”
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)
Dr. Porter 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 Dr. Porter 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 Mount Vernon and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 80% of clinicians listed under Surgery in Washington (2024, 325 clinicians with data). Median for this group: 116. Middle half: 63 to 221.
Too few clinicians listed under Surgery in Mount Vernon have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 65% of clinicians listed under Surgery in Washington (2024, 325 clinicians with data). Median for this group: $17,811. Middle half: $7,693 to $32,723.
Too few clinicians listed under Surgery in Mount Vernon have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 65% of clinicians listed under Surgery in Washington (2024, 325 clinicians with data). Median for this group: $13,577. Middle half: $5,745 to $25,028.
Too few clinicians listed under Surgery in Mount Vernon have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Surgery in Washington (2024, 308 clinicians with data). Median for this group: 52. Middle half: 28 to 107.
Too few clinicians listed under Surgery in Mount Vernon have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Surgery in Washington (2024, 308 clinicians with data). Median for this group: $263. Middle half: $101 to $827.
Too few clinicians listed under Surgery in Mount Vernon have Medicare Part D data for 2024 to compare.
17 active clinicians are listed under Surgery with a practice address in Mount Vernon, WA (791 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mount Vernon
29.4% of these 17 clinicians have the CMS telehealth indicator.
64.7% of these 17 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 stayed about the same: 269 in 2020 and 257 in 2024.
- 2020: 269
- 2021: 243
- 2022: 272
- 2023: 260
- 2024: 257
-
Medicare-allowed amount
Medicare-allowed amount varied from year to year: $29,065 in 2020 and $29,199 in 2024.
- 2020: $29,065
- 2021: $26,983
- 2022: $48,450
- 2023: $48,476
- 2024: $29,199
-
Paid by Medicare
Paid by Medicare varied from year to year: $20,913 in 2020 and $21,699 in 2024.
- 2020: $20,913
- 2021: $19,990
- 2022: $36,632
- 2023: $36,555
- 2024: $21,699
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 10% from 131 in 2020 to 118 in 2024.
- 2020: 131
- 2021: 79
- 2022: 82
- 2023: 64
- 2024: 118
-
30-day fills
30-day fills decreased 23% from 158 in 2020 to 122 in 2024.
- 2020: 158
- 2021: 99
- 2022: 97
- 2023: 64
- 2024: 122
-
Part D drug cost
Part D drug cost decreased 27% from $4,260 in 2020 to $3,113 in 2024.
- 2020: $4,260
- 2021: $2,058
- 2022: $1,962
- 2023: $1,594
- 2024: $3,113
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $98.64 in 2020 to $10,575.44 in 2025.
- 2020: $98.64
- 2022: $593.54
- 2023: $12,197.43
- 2024: $14,778.25
- 2025: $10,575.44
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): 18 records totaling $10,575.44.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| INTUITIVE SURGICAL, INC. |
Education
Cash or cash equivalent
|
Da Vinci Surgical System | General | $4,000.00 |
| INTUITIVE SURGICAL, INC. |
Education
Cash or cash equivalent
|
Da Vinci Surgical System | General | $2,000.00 |
| INTUITIVE SURGICAL, INC. |
Education
Cash or cash equivalent
|
Da Vinci Surgical System | General | $2,000.00 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $752.86 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $631.60 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $376.34 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $280.16 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $185.00 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $162.00 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
ALIF | General | $73.42 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
ALIF | General | $28.60 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $24.90 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
HEDRON | General | $18.19 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $12.00 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
HEDRON | General | $9.38 |
| INTUITIVE SURGICAL, INC. |
Food and Beverage
In-kind items and services
|
Da Vinci Surgical System | General | $8.99 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $7.00 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
ALIF | General | $5.00 |
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 |
|---|---|---|---|---|
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
77 | 77 | $177.01 | $131.39 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
73 | 56 | $135.00 | $95.88 |
|
43239
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope
|
32 | 32 | $708.00 | $115.54 |
|
45380
Biopsy of large bowel using a flexible endoscope
|
17 | 17 | $834.00 | $131.87 |
|
99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
|
17 | 17 | $205.00 | $142.35 |
|
91010
Study of esophagus to assess movement
|
16 | 16 | $270.00 | $63.20 |
|
99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
|
13 | 13 | $278.00 | $128.58 |
|
99442
Telephone medical discussion with physician, 11-20 minutes
|
12 | 12 | $183.00 | $86.77 |
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 |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 36 | 52 | $54.51 | 36 |
| Sod Sulf-Potass Sulf-Mag Sulf | Sodium, Potassium,mag Sulfates | 33 | 47 | $2,421.41 | 32 |
| Omeprazole | Omeprazole | 25 | 825 | $478.20 | — |
| Ibuprofen | Ibuprofen | 24 | 306 | $158.41 | 23 |
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: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20140610000857
WA
3870739980
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
Public Hospital Dist No 1 Skagit
1400 E Kincaid St, Mount Vernon, WA 982744127
Phone: 3604282500
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery - Plastic and Reconstructive Surgery
Doctor of Medicine (M.D.)
Surgery
Physician Assistant - Surgical
Physician Assistant (Certified)
Nurse Practitioner
Advanced Registered Nurse Practitioner
Nurse Practitioner - Family
Nurse Practitioner (Certified)
Physician Assistant - Surgical
Physician Assistant
Career & Practice History
NPI enumerated March 31, 2009.
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 Surgery Specialists in Mount Vernon
- Dr. Janice Kang, MD
- Weslee Chew
- Dr. Edward Prevatt, MD
- Dr. Jess Schultz, MD
- Dr. Melissa Wong, MD
- Dr. Theodore Bosch, MD
More public profiles in Washington
Directory navigation, in NPI number order.
- Miyong Kim, NP Nurse Practitioner - Family · Tacoma
- Jerrica Werner, MD Internal Medicine - Infectious Disease · Seattle
- Cooper Kersey, MD Internal Medicine - Cardiovascular Disease · Seattle
- Kelsey Hogg, PA-C Physician Assistant · Seattle
- Jacob Debell, PA-C Physician Assistant · Seattle
- Zackary Hanson, PA-C Physician Assistant - Medical · Stanwood
- Riley Mccorkle, RDN Dietitian, Registered · Spokane
- Andrew Murry, DC Chiropractor · Bellingham
- James Juneau, RPH Pharmacist · Bellingham
- Kelli True, CRNA Nurse Anesthetist, Certified Registered · Seattle
- Michelle Mackenzie, MD Family Medicine · Bremerton
- Hannah Bishop Internal Medicine - Cardiovascular Disease · Bremerton
Mailing Address
1400 E. Kincade Street, Attn: Credentialiing
Mount Vernon, WA 982744127
Phone: 3604282500