Active NPI 1669404562 Individual Practitioner Female Practitioner

Dr. Ann M Knowles , MD

Internal Medicine • Everett, WA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ann Knowles, MD is a certified Internal Medicine practicing in Everett, WA. With approximately 33 years of clinical experience since graduating from University Of Nebraska College Of Medicine in 1993, Dr. Knowles delivers high-quality medical care to the local community at 3927 RUCKER AVE.

Dr. Knowles is affiliated with Optum Care Washington Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, manual urinalysis test with examination using microscope, automated. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

3927 Rucker Ave

Everett, WA 982014833

Telephone 4253395442

Associated Practice Facility / Clinic

🏢 Optum Care Washington Pllc Facility NPI 1154318103

Medicare Profile & Education

Medical School

University Of Nebraska College Of Medicine

Graduation Year

1993

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Everett, WA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

33 Yrs +12.7 yrs vs City Avg

City Avg: 20.3 Yrs

State Avg: 23.4 Yrs

Regional Practice Density

175 Specialists

Practicing in Everett, WA (3169 Statewide)

Telehealth Adoption Rate

12.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

62.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Knowles (33 Years) 33 Yrs

Everett Specialty Average (20.3 Years) 20.3 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	149	134	$349.09	$124.09
99213 Established patient office or other outpatient visit, typically 15 minutes	126	120	$248.23	$89.21
36415 Insertion of needle into vein for collection of blood sample	55	50	$18.00	$8.36
81001 Manual urinalysis test with examination using microscope, automated	51	50	$7.25	$3.11
87086 Bacterial colony count, urine	40	39	$18.25	$7.91
80053 Blood test, comprehensive group of blood chemicals	34	34	$22.25	$9.86
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	29	28	$19.50	$8.48
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	26	26	$137.42	$50.28
85027 Complete blood cell count (red cells, white blood cell, platelets), automated test	24	23	$14.50	$5.91
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	16	16	$25.00	$5.88
84484 Troponin (protein) analysis, quantitative	15	15	$26.25	$10.70
86140 Measurement C-reactive protein for detection of infection or inflammation	14	13	$11.75	$4.81
87077 Bacterial culture for aerobic isolates	14	14	$18.25	$7.92
87070 Bacterial culture	13	12	$19.25	$8.45
87088 Bacterial urine culture	13	12	$17.00	$7.93
85652 Red blood cell sedimentation rate, to detect inflammation, automated	12	11	$6.25	$2.65
81003 Automated urinalysis test	11	11	$5.25	$2.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml	1,300	12	$1.25	$0.15
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	203	190	$308.60	$128.34
99213 Established patient office or other outpatient visit, typically 15 minutes	87	83	$217.66	$91.53
36415 Insertion of needle into vein for collection of blood sample	65	61	$14.17	$8.22
81001 Manual urinalysis test with examination using microscope, automated	43	43	$7.25	$2.90
80053 Blood test, comprehensive group of blood chemicals	38	37	$22.25	$10.35
85027 Complete blood cell count (red cells, white blood cell, platelets), automated test	30	29	$14.50	$6.34
84484 Troponin (protein) analysis, quantitative	23	22	$26.25	$12.22
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	22	22	$25.00	$6.54
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	22	22	$130.75	$50.28
87086 Bacterial colony count, urine	21	21	$18.25	$7.59
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	18	18	$19.50	$8.48
71046 X-ray of chest, 2 views	18	18	$94.25	$34.87
87070 Bacterial culture	16	15	$19.25	$8.45
87205 Special gram or giemsa stain for microorganism	15	15	$9.75	$4.18
U0002 2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc	14	14	$125.50	$50.28
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$297.25	$105.23
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$450.50	$168.16
86140 Measurement C-reactive protein for detection of infection or inflammation	13	13	$11.75	$5.08
87147 Identification of organisms by immunologic analysis, other than immunofluorescence method	13	11	$11.75	$5.08
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	12	$430.35	$166.08
69209 Removal of impacted ear wax by washing	11	11	$56.36	$21.03
84443 Blood test, thyroid stimulating hormone (TSH)	11	11	$37.50	$16.46
81003 Automated urinalysis test	11	11	$5.25	$2.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	172	160	$302.27	$127.91
99213 Established patient office or other outpatient visit, typically 15 minutes	51	50	$213.75	$91.66
36415 Insertion of needle into vein for collection of blood sample	49	49	$7.25	$2.96
81001 Manual urinalysis test with examination using microscope, automated	40	36	$7.25	$3.13
80053 Blood test, comprehensive group of blood chemicals	40	39	$22.25	$10.42
U0002 2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc	33	33	$125.50	$45.94
85027 Complete blood cell count (red cells, white blood cell, platelets), automated test	33	33	$14.50	$6.38
87086 Bacterial colony count, urine	31	27	$18.25	$7.98
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	29	24	$19.50	$8.56
84484 Troponin (protein) analysis, quantitative	18	18	$26.25	$12.28
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	17	17	$25.00	$6.20
71046 X-ray of chest, 2 views	17	16	$91.50	$34.73
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$437.25	$167.60
86140 Measurement C-reactive protein for detection of infection or inflammation	14	14	$11.75	$5.11
87502 Detection test by nucleic acid for multiple types influenza virus	12	12	$201.25	$78.63
87077 Bacterial culture for aerobic isolates	12	11	$18.25	$8.03
87070 Bacterial culture	12	12	$19.25	$8.51
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	12	$420.50	$166.62
87205 Special gram or giemsa stain for microorganism	12	12	$9.75	$4.21
90682 Influenza vaccine, quadrivalent derived from recombinant dna	11	11	$147.00	$68.54
G0008 Administration of influenza virus vaccine	11	11	$63.25	$29.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
0012A Adm sarscov2 100mcg/0.5ml2nd	141	141	$30.61	$30.68
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	93	89	$282.75	$130.60
99213 Established patient office or other outpatient visit, typically 15 minutes	92	89	$195.75	$89.62
0011A Adm sarscov2 100mcg/0.5ml1st	81	81	$33.45	$33.52
0064A Adm sarscov2 50mcg/0.25mlbst	73	73	$40.00	$40.42
0003A Adm sarscov2 30mcg/0.3ml 3rd	54	54	$40.00	$39.67
36415 Insertion of needle into vein for collection of blood sample	36	34	$7.25	$2.87
81001 Manual urinalysis test with examination using microscope, automated	36	32	$7.25	$3.17
80053 Blood test, comprehensive group of blood chemicals	31	30	$22.25	$10.30
G0008 Administration of influenza virus vaccine	27	27	$63.25	$17.33
87086 Bacterial colony count, urine	27	24	$18.25	$8.07
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	26	22	$19.50	$8.32
90682 Influenza vaccine, quadrivalent derived from recombinant dna	26	26	$137.25	$65.26
U0002 2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc	22	22	$115.72	$51.31
85027 Complete blood cell count (red cells, white blood cell, platelets), automated test	22	21	$14.50	$6.25
0001A Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; first dose	22	22	$22.18	$19.27
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	20	20	$26.25	$6.67
71046 X-ray of chest, 2 views	19	19	$89.50	$33.22
84484 Troponin (protein) analysis, quantitative	17	17	$26.25	$11.37
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	15	14	$379.75	$160.57
87077 Bacterial culture for aerobic isolates	15	13	$18.25	$7.54
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$430.00	$170.23
87070 Bacterial culture	12	12	$19.25	$7.90
87205 Special gram or giemsa stain for microorganism	11	11	$9.75	$3.88
84443 Blood test, thyroid stimulating hormone (TSH)	11	11	$37.50	$16.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	133	128	$276.00	$110.51
G0008 Administration of influenza virus vaccine	95	95	$63.25	$17.02
90682 Influenza vaccine, quadrivalent derived from recombinant dna	93	93	$123.63	$60.91
99213 Established patient office or other outpatient visit, typically 15 minutes	53	50	$187.00	$74.45
36415 Insertion of needle into vein for collection of blood sample	31	30	$7.25	$2.98
81001 Manual urinalysis test with examination using microscope, automated	29	29	$7.25	$3.08
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	24	22	$19.50	$8.34
80053 Blood test, comprehensive group of blood chemicals	20	20	$22.25	$10.52
71046 X-ray of chest, 2 views	19	18	$74.61	$31.74
87086 Bacterial colony count, urine	19	19	$18.25	$7.78
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$276.50	$109.84
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	15	15	$17.50	$7.72
U0002 2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc	15	15	$102.75	$51.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	193	177	$266.75	$106.46
99213 Established patient office or other outpatient visit, typically 15 minutes	64	59	$181.25	$73.06
36415 Insertion of needle into vein for collection of blood sample	45	38	$7.25	$2.87
81001 Manual urinalysis test with examination using microscope, automated	33	31	$7.25	$3.35
90682 Influenza vaccine, quadrivalent derived from recombinant dna	30	30	$91.25	$49.40
80053 Blood test, comprehensive group of blood chemicals	29	25	$22.25	$11.51
G0008 Administration of influenza virus vaccine	28	28	$62.96	$16.68
71046 X-ray of chest, 2 views	24	23	$69.80	$29.64
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	20	20	$267.25	$109.92
87086 Bacterial colony count, urine	20	19	$18.25	$8.79
84484 Troponin (protein) analysis, quantitative	18	17	$22.00	$12.22
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	18	18	$24.25	$8.58
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	17	17	$17.50	$8.28
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	14	12	$19.50	$9.42
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$185.50	$77.60

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	180	163	$266.42	$104.37
G0008 Administration of influenza virus vaccine	109	109	$55.00	$20.58
90653 Vaccine for influenza for injection into muscle	106	106	$90.75	$53.07
99213 Established patient office or other outpatient visit, typically 15 minutes	75	73	$181.16	$72.48
81001 Manual urinalysis test with examination using microscope, automated	46	41	$7.24	$3.62
87086 Bacterial colony count, urine	35	33	$18.24	$9.28
36415 Insertion of needle into vein for collection of blood sample	34	33	$7.24	$2.68
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	26	24	$19.48	$10.11
80053 Blood test, comprehensive group of blood chemicals	22	22	$20.20	$11.62
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$267.25	$104.24
71046 X-ray of chest, 2 views	12	12	$68.23	$27.23
87070 Bacterial culture	11	11	$19.23	$9.48
87088 Bacterial urine culture	11	11	$16.75	$9.00
87205 Special gram or giemsa stain for microorganism	11	11	$9.73	$4.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	142	138	$251.76	$104.52
G0008 Administration of influenza virus vaccine	66	66	$55.06	$25.46
90653 Vaccine for influenza for injection into muscle	54	54	$80.00	$48.31
99213 Established patient office or other outpatient visit, typically 15 minutes	50	48	$171.38	$69.13
36415 Insertion of needle into vein for collection of blood sample	26	26	$7.13	$2.94
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$252.66	$107.17
80053 Blood test, comprehensive group of blood chemicals	21	21	$19.92	$10.86
81001 Manual urinalysis test with examination using microscope, automated	18	18	$7.50	$4.08
85027 Complete blood cell count (red cells, white blood cell, platelets), automated test	14	14	$15.21	$8.69
71020 X-ray of chest, 2 views, front and side	13	13	$73.31	$26.96
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	13	13	$33.75	$18.65
87086 Bacterial colony count, urine	13	13	$18.85	$10.22
99202 New patient office or other outpatient visit, typically 20 minutes	12	12	$176.75	$74.34

Medical Specialties & State Licenses

CMS Verified: 2026-07-08

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License WA MD00035979

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

Medicaid State Provider ID

8223919 (WA)

Commercial Insurance / Payer ID Railroad Medicare

080148615 (WA)

Commercial Insurance / Payer ID L&i Crime Victim

8924384 (WA)

Commercial Insurance / Payer ID Group Health Cooperative

423898049 (WA)

Commercial Insurance / Payer ID Regence Blueshield

67444 (WA)

Commercial Insurance / Payer ID L&i Regular

0131540 (WA)

Hospital & Practice Group Affiliations

Optum Care Washington Pllc

3927 Rucker Ave, Everett, WA 982014833

Phone: 4253393930

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

17 Associated Practitioners

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Dr. Kenny Koo , MD

Surgery

NPI 1114947629

Doctor of Medicine (M.D.)

Patrick Willauer

Surgery

NPI 1205222551

Dr. Sara Worden , MD

Surgery

NPI 1215063102

Doctor of Medicine (M.D.)

Dr. Thomas Smith , MD

Surgery

NPI 1306943782

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Business Mailing Address July 08, 2026

Registered at 7600 EVERGREEN WAY, EVERETT, WA 982036421 (Tel: 2068605414)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2026

Internal Medicine (License #MD00035979 in WA)

✅

NPI Profile Active June 13, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location June 13, 2014

Registered at 3927 RUCKER AVE, EVERETT, WA 982014833 (Tel: 4253395442)

📍

Updated Business Mailing Address June 13, 2014

Registered at PO BOX 5127, EVERETT, WA 982065127

👤

Provider Name / Credentials Updated June 13, 2014

Recorded as ANN KNOWLES, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 13, 2014

Family Medicine (License #MD00035979 in WA)

🟢

Initial NPI Registration & Enumeration July 07, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1669404562

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 07, 2006

Last Update: July 08, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

7600 Evergreen Way

Everett, WA 982036421

Phone: 2068605414

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.