Dr. Ann M Knowles , MD
Internal Medicine โข Everett, WA
3927 Rucker Ave
Everett, WA 982014833
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 7, 2006; this date does not establish years in practice.
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Published CMS data list 642 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.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 149 service units.
- 99213 โ Established patient outpatient office visit: 126 service units.
- 36415 โ Insertion of needle into vein for collection of blood sample: 55 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 17 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 703 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.
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Published Part D records, 2024:
- Prednisone โ 177 prescription fills, including refills.
- Doxycycline Hyclate โ 104 prescription fills, including refills.
- Cephalexin โ 54 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 18 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 85% of clinicians listed under Internal Medicine in Everett, WA (2024, 97 clinicians with data). Median for this group: 325. Middle half: 168 to 513.
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Washington (2024, 1,563 clinicians with data). Median for this group: 445. Middle half: 181 to 884.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 562 in 2020 to 642 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
3927 Rucker Ave
Everett, WA 982014833
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: Optum Care Washington Pllc. 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 Nebraska College Of Medicine
1993
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
297 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 $33,397 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 $23,662 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
738 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
$4,947 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)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
33 years (graduated 1993)
CMS Doctors and Clinicians data list 1993 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
2006
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
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)
Dr. Knowles 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. Knowles 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 Everett and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 85% of clinicians listed under Internal Medicine in Everett, WA (2024, 97 clinicians with data). Median for this group: 325. Middle half: 168 to 513.
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Washington (2024, 1,563 clinicians with data). Median for this group: 445. Middle half: 181 to 884.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Everett, WA (2024, 97 clinicians with data). Median for this group: $33,330. Middle half: $18,924 to $50,772.
Close to the middle for clinicians listed under Internal Medicine in Washington (2024, 1,563 clinicians with data). Median for this group: $44,391. Middle half: $19,546 to $81,175.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Everett, WA (2024, 97 clinicians with data). Median for this group: $25,649. Middle half: $14,403 to $38,541.
A lower Medicare payment amount than 60% of clinicians listed under Internal Medicine in Washington (2024, 1,563 clinicians with data). Median for this group: $34,352. Middle half: $14,821 to $61,951.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Internal Medicine in Everett, WA (2024, 84 clinicians with data). Median for this group: 148. Middle half: 59 to 2,913.
Close to the middle for clinicians listed under Internal Medicine in Washington (2024, 1,654 clinicians with data). Median for this group: 834. Middle half: 101 to 3,989.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Everett, WA (2024, 84 clinicians with data). Median for this group: $9,716. Middle half: $738 to $137,389.
A lower Part D drug cost than 70% of clinicians listed under Internal Medicine in Washington (2024, 1,654 clinicians with data). Median for this group: $61,689. Middle half: $2,998 to $293,737.
174 active clinicians are listed under Internal Medicine with a practice address in Everett, WA (3,081 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Everett
12.1% of these 174 clinicians have the CMS telehealth indicator.
71.8% of these 174 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 increased 14% from 562 in 2020 to 642 in 2024.
- 2020: 562
- 2021: 942
- 2022: 641
- 2023: 2,033
- 2024: 642
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Medicare-allowed amount
Medicare-allowed amount increased 12% from $29,911 in 2020 to $33,397 in 2024.
- 2020: $29,911
- 2021: $43,365
- 2022: $37,362
- 2023: $45,047
- 2024: $33,397
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Paid by Medicare
Paid by Medicare varied from year to year: $22,572 in 2020 and $23,662 in 2024.
- 2020: $22,572
- 2021: $35,617
- 2022: $28,473
- 2023: $32,434
- 2024: $23,662
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 138% from 296 in 2020 to 703 in 2024.
- 2020: 296
- 2021: 274
- 2022: 443
- 2023: 667
- 2024: 703
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30-day fills
30-day fills increased 139% from 308 in 2020 to 738 in 2024.
- 2020: 308
- 2021: 274
- 2022: 449
- 2023: 678
- 2024: 738
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Part D drug cost
Part D drug cost increased 88% from $2,630 in 2020 to $4,947 in 2024.
- 2020: $2,630
- 2021: $2,742
- 2022: $4,213
- 2023: $5,818
- 2024: $4,947
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (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.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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, 2017โ2024; 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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149 | 134 | $349.09 | $124.09 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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126 | 120 | $248.23 | $89.21 |
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36415
Insertion of needle into vein for collection of blood sample
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55 | 50 | $18.00 | $8.36 |
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81001
Manual urinalysis test with examination using microscope, automated
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51 | 50 | $7.25 | $3.11 |
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87086
Bacterial colony count, urine
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40 | 39 | $18.25 | $7.91 |
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80053
Blood test, comprehensive group of blood chemicals
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34 | 34 | $22.25 | $9.86 |
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87186
Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution
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29 | 28 | $19.50 | $8.48 |
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87635
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
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26 | 26 | $137.42 | $50.28 |
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85027
Complete blood cell count (red cells, white blood cell, platelets), automated test
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24 | 23 | $14.50 | $5.91 |
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93005
Routine electrocardiogram (ecg) using at least 12 leads with tracing
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16 | 16 | $25.00 | $5.88 |
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84484
Troponin (protein) analysis, quantitative
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15 | 15 | $26.25 | $10.70 |
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86140
Measurement c-reactive protein for detection of infection or inflammation
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14 | 13 | $11.75 | $4.81 |
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87077
Bacterial culture for aerobic isolates
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14 | 14 | $18.25 | $7.92 |
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87070
Bacterial culture, any other source except urine, blood or stool, aerobic
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13 | 12 | $19.25 | $8.45 |
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87088
Bacterial urine culture
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13 | 12 | $17.00 | $7.93 |
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85652
Red blood cell sedimentation rate, to detect inflammation, automated
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12 | 11 | $6.25 | $2.65 |
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81003
Automated urinalysis test
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11 | 11 | $5.25 | $2.20 |
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 |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 177 | 1,300 | $432.64 | 160 |
| Doxycycline Hyclate | Doxycycline Hyclate | 104 | 750 | $794.77 | 102 |
| Cephalexin | Cephalexin | 54 | 623 | $480.52 | 52 |
| Meloxicam | Meloxicam | 48 | 1,474 | $236.33 | 32 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 46 | 328 | $370.94 | 46 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 40 | 712 | $940.35 | 33 |
| Fluconazole | Fluconazole | 29 | 486 | $307.83 | 24 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 28 | 426 | $275.08 | 28 |
| Cefuroxime | Cefuroxime Axetil | 28 | 194 | $351.89 | 28 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 26 | 185 | $155.96 | 25 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 19 | 93 | $93.04 | 17 |
| Tizanidine Hcl | Tizanidine Hcl | 18 | 306 | $85.82 | 18 |
| Paxlovid | Nirmatrelvir/Ritonavir | 17 | 85 | $0.00 | 17 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 16 | 329 | $175.70 | 14 |
| Azithromycin | Azithromycin | 15 | 76 | $43.77 | 15 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 13 | 44 | $50.52 | 13 |
| Methocarbamol | Methocarbamol | 13 | 97 | $92.94 | 12 |
| Losartan Potassium | Losartan Potassium | 12 | 960 | $58.46 | โ |
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: 2026-07-08NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20100219000451
WA
7810031473
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
Optum Care Washington Pllc
3927 Rucker Ave, Everett, WA 982014833
Phone: 4253393930
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Surgery
Doctor of Medicine (M.D.)
Physician Assistant - Surgical
Physician Assistant (Certified)
Surgery
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 7600 EVERGREEN WAY, EVERETT, WA 982036421 (Tel: 2068605414)
Internal Medicine (license number reported to NPPES: WA MD00035979)
NPI status registered as active in NPPES database
Registered at 3927 RUCKER AVE, EVERETT, WA 982014833 (Tel: 4253395442)
Registered at PO BOX 5127, EVERETT, WA 982065127
Recorded as ANN KNOWLES, M.D.
Family Medicine (license number reported to NPPES: WA MD00035979)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Everett
- Dr. Ryan Trinh, MD
- Dr. Chad Rieck, MD
- Dr. Arti Rajvanshi, MD
- Dr. Yeu-Yao Cheng, MD
- Dr. Angela Muriithi, MBCHB
- Dr. Baljit Banga, MD
Mailing Address
7600 Evergreen Way
Everett, WA 982036421
Phone: 2068605414