Active NPI 1609869643 Individual Practitioner Male Practitioner

Dr. Michael Mackenzie Johnson , MD

Internal Medicine • Sun City, AZ

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Michael Johnson, MD is a certified Internal Medicine practicing in Sun City, AZ. With approximately 43 years of clinical experience since graduating from University Of Arizona College Of Medicine in 1983, Dr. Johnson delivers high-quality medical care to the local community at 14678 N DEL WEBB BLVD.

Dr. Johnson is affiliated with Maxwell Group and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, annual depression screening, 5 to. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

14678 N Del Webb Blvd

Sun City, AZ 853512137

Telephone 6239338289

Fax 6239332596

Associated Practice Facility / Clinic

🏢 Maxwell Group Facility NPI 1912188384

Medicare Profile & Education

Medical School

University Of Arizona College Of Medicine

Graduation Year

1983

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Sun City, AZ

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

43 Yrs +14.3 yrs vs City Avg

City Avg: 28.7 Yrs

State Avg: 25.1 Yrs

Regional Practice Density

56 Specialists

Practicing in Sun City, AZ (2967 Statewide)

Telehealth Adoption Rate

23.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

36.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Johnson (43 Years) 43 Yrs

Sun City Specialty Average (28.7 Years) 28.7 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	709	366	$162.00	$123.26
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	324	324	$275.00	$124.63
G0444 Annual depression screening, 5 to 15 minutes	320	320	$48.00	$18.13
G0442 Annual alcohol misuse screening, 5 to 15 minutes	222	222	$48.00	$18.10
99213 Established patient office or other outpatient visit, typically 15 minutes	180	130	$114.00	$87.69
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	131	131	$48.00	$24.35
93000 Routine ekg using at least 12 leads including interpretation and report	99	93	$49.00	$13.64
99495 Transitional care management services for problem of at least moderate complexity	45	41	$250.00	$199.31
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	30	30	$268.00	$161.24
99496 Transitional care management services for problem of high complexity	22	20	$350.00	$270.01
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	17	16	$84.00	$51.54
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes	15	15	$31.00	$14.09

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	653	366	$162.00	$123.64
G0444 Annual depression screening, 5 to 15 minutes	336	336	$48.00	$17.73
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	329	329	$275.00	$124.35
99213 Established patient office or other outpatient visit, typically 15 minutes	224	152	$114.00	$87.46
G0442 Annual alcohol misuse screening, 5 to 15 minutes	124	124	$48.00	$17.78
93000 Routine ekg using at least 12 leads including interpretation and report	120	117	$49.00	$13.87
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	114	114	$48.00	$24.72
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	34	23	$84.00	$50.48
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	30	30	$268.00	$161.56
99495 Transitional care management services for problem of at least moderate complexity	29	24	$237.86	$197.38
99496 Transitional care management services for problem of high complexity	29	26	$320.69	$259.88
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	29	17	$94.00	$60.63
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes	16	15	$31.00	$14.30
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$180.00	$108.99

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	439	310	$162.00	$124.80
99213 Established patient office or other outpatient visit, typically 15 minutes	345	266	$114.08	$88.68
G0444 Annual depression screening, 5 to 15 minutes	324	324	$48.00	$17.71
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	324	324	$275.00	$126.99
G0442 Annual alcohol misuse screening, 5 to 15 minutes	128	128	$48.00	$18.15
93000 Routine ekg using at least 12 leads including interpretation and report	114	113	$49.00	$13.94
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	96	96	$48.00	$25.61
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	68	15	$9.00	$1.14
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	29	21	$84.00	$51.46
99495 Transitional care management services for problem of at least moderate complexity	29	27	$218.00	$201.70
99496 Transitional care management services for problem of high complexity	24	24	$300.00	$271.26
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$268.00	$162.56
69209 Removal of impacted ear wax by washing	17	14	$42.00	$18.09
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	15	15	$180.00	$109.49
J1030 Injection, methylprednisolone acetate, 40 mg	14	12	$10.00	$6.51
92250 Photography of the retina	13	13	$138.00	$35.95
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes	12	12	$31.00	$14.97
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	11	11	$37.00	$22.55

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	567	370	$114.00	$89.83
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	351	278	$162.00	$127.29
G0444 Annual depression screening, 5 to 15 minutes	320	320	$48.00	$18.13
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	318	318	$251.43	$129.95
G0442 Annual alcohol misuse screening, 5 to 15 minutes	204	204	$48.00	$18.10
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	124	25	$9.00	$1.28
93000 Routine ekg using at least 12 leads including interpretation and report	119	114	$49.00	$14.49
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	112	112	$48.00	$26.19
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	70	29	$60.00	$40.07
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	29	25	$84.00	$51.75
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	29	20	$37.00	$22.18
J1030 Injection, methylprednisolone acetate, 40 mg	26	23	$10.00	$5.68
99496 Transitional care management services for problem of high complexity	23	21	$300.00	$273.52
99495 Transitional care management services for problem of at least moderate complexity	23	21	$218.00	$201.97
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	20	17	$41.00	$13.86
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month	20	11	$63.25	$36.63
99487 Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month	18	11	$140.00	$88.82
69209 Removal of impacted ear wax by washing	17	16	$42.00	$17.14
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$180.00	$110.42

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	862	428	$114.00	$74.53
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	379	379	$240.00	$115.47
G0444 Annual depression screening, 5 to 15 minutes	343	343	$48.00	$18.04
G0442 Annual alcohol misuse screening, 5 to 15 minutes	268	268	$48.00	$17.93
93000 Routine ekg using at least 12 leads including interpretation and report	156	153	$49.00	$16.80
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	108	21	$9.00	$1.46
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	98	97	$48.00	$26.49
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	98	28	$60.00	$41.75
G0008 Administration of influenza virus vaccine	61	61	$60.00	$16.58
90662 Influenza vaccine split virus, preservative free	61	61	$92.00	$60.98
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	53	36	$84.00	$53.22
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	41	41	$144.00	$118.44
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	40	36	$162.00	$108.80
G0009 Administration of pneumococcal vaccine	39	39	$48.00	$16.51
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	32	23	$37.00	$22.62
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$180.00	$107.12
J1030 Injection, methylprednisolone acetate, 40 mg	24	19	$10.00	$6.04
G2058 Chronic care management services, each additional 20 minutes of clinical staff time directed by a physician or other qualified health care professional, per calendar month (list separately in addition to code for primary procedure). (do not report g2058 fo	17	15	$56.00	$37.48
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes	17	17	$31.00	$15.23
69209 Removal of impacted ear wax by washing	14	12	$45.00	$18.39
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	12	11	$41.00	$14.25
99496 Transitional care management services for problem of high complexity	11	11	$300.00	$244.58

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	859	467	$114.00	$72.83
G0442 Annual alcohol misuse screening, 5 to 15 minutes	418	418	$48.00	$17.63
G0444 Annual depression screening, 5 to 15 minutes	410	410	$48.00	$17.63
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	404	404	$240.00	$113.53
93000 Routine ekg using at least 12 leads including interpretation and report	175	172	$49.00	$16.67
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	76	18	$9.00	$1.60
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	42	29	$37.00	$22.21
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	25	21	$84.00	$52.12
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	25	25	$180.00	$102.76
J1030 Injection, methylprednisolone acetate, 40 mg	19	18	$10.00	$6.33
69209 Removal of impacted ear wax by washing	17	14	$42.00	$18.19
99495 Transitional care management services for problem of at least moderate complexity	17	16	$218.00	$160.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,016	507	$108.26	$71.60
G0442 Annual alcohol misuse screening, 5 to 15 minutes	435	435	$45.76	$17.87
G0444 Annual depression screening, 5 to 15 minutes	431	431	$45.77	$17.53
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	426	426	$198.73	$114.15
93000 Routine ekg using at least 12 leads including interpretation and report	194	190	$46.48	$16.57
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	84	21	$8.43	$1.82
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	30	17	$35.40	$21.13
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$172.50	$105.68
J1030 Injection, methylprednisolone acetate, 40 mg	21	21	$9.71	$6.66
69209 Removal of impacted ear wax by washing	19	19	$39.79	$18.45
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	17	16	$79.88	$52.75
93925 Ultrasound of leg arteries or artery grafts	13	13	$389.00	$257.01
93880 Ultrasound of both sides of head and neck blood flow	13	13	$304.00	$200.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,096	536	$95.00	$72.01
G0444 Annual depression screening, 5 to 15 minutes	469	469	$40.00	$17.69
G0442 Annual alcohol misuse screening, 5 to 15 minutes	468	468	$40.00	$17.69
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	455	455	$145.34	$113.76
93000 Routine ekg using at least 12 leads including interpretation and report	245	239	$41.00	$16.78
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	140	29	$7.00	$1.79
G0008 Administration of influenza virus vaccine	105	104	$50.00	$25.01
90662 Influenza vaccine split virus, preservative free	101	101	$60.00	$48.05
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	40	26	$70.00	$53.07
J1030 Injection, methylprednisolone acetate, 40 mg	35	29	$9.00	$5.64
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	29	29	$141.79	$106.69
99202 New patient office or other outpatient visit, typically 20 minutes	28	28	$105.50	$73.86
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	22	14	$31.00	$19.92
69209 Removal of impacted ear wax by washing	20	19	$38.50	$16.55
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	14	14	$117.14	$96.25
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	13	13	$40.00	$25.40
G0009 Administration of pneumococcal vaccine	13	13	$40.00	$25.01

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License AZ 12960

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

Commercial Insurance / Payer ID Blue Cross Blue Shield

AZ0054230 (AZ)

Commercial Insurance / Payer ID Railroad Medicare

110061076 (AZ)

Hospital & Practice Group Affiliations

Maxwell Group

14678 N Del Webb Blvd, Sun City, AZ 853512137

Phone: 6239338289

Practice Associates & Co-Workers

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

14 Associated Practitioners

Dr. Michael Willcox , MD

Family Medicine

NPI 1053809855

Doctor of Medicine (M.D.)

Christopher Huber , FNP-C

Nurse Practitioner - Family

NPI 1124551965

Family Nurse Practitioner (Certified)

Monique Phan , PA

Physician Assistant

NPI 1144005166

Physician Assistant

Dr. Randall Piette , MD

Internal Medicine

NPI 1154314243

Doctor of Medicine (M.D.)

Dr. Seokhan Song , DO, MS

Family Medicine

NPI 1194163170

Doctor of Osteopathic Medicine (D.O.), Master of Science

Dr. Mark Brown , MD

Internal Medicine

NPI 1225021264

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active September 09, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location September 09, 2016

Registered at 14678 N DEL WEBB BLVD, SUN CITY, AZ 853512137 (Tel: 6239338289)

📍

Updated Business Mailing Address September 09, 2016

Registered at 14678 N DEL WEBB BLVD, SUN CITY, AZ 853512137 (Tel: 6239338289)

👤

Provider Name / Credentials Updated September 09, 2016

Recorded as MICHAEL JOHNSON, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 09, 2016

Internal Medicine (License #12960 in AZ)

🟢

Initial NPI Registration & Enumeration August 24, 2005

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: 1609869643

Entity Type:

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

Enumeration Date: August 24, 2005

Last Update: September 09, 2016

Sole Proprietor: No

Update or Correct Profile

Mailing Address

14678 N Del Webb Blvd

Sun City, AZ 853512137

Phone: 6239338289

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.