Active NPI 1891723599 Individual Practitioner Male Practitioner

Josefino Calibo Diaz

Internal Medicine • Duluth, MN

✓ Accepts Medicare Assignment

Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Josefino Diaz is a registered Internal Medicine practitioner in Duluth, MN. With approximately 43 years of clinical practice since graduating from Saint Louis University School Of Medicine in 1983, Josefino Diaz provides healthcare services at the registered practice location at 400 E 3RD ST.

Josefino Diaz is affiliated with Polinsky Medical Rehabilitation Center and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, subsequent nursing facility care with high level of medical decision making, per day, if using time, at least, initial nursing facility visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

400 E 3rd St

Duluth, MN 558051951

Telephone 2187868364

Associated Practice Facility / Clinic

🏢 The Duluth Clinic, Ltd Facility NPI 1245278209

Medicare Profile & Education

Medical School

Saint Louis University School Of Medicine

Graduation Year

1983

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Duluth, MN

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

43 Yrs +21.4 yrs vs City Avg

City Avg: 21.6 Yrs

State Avg: 23.6 Yrs

Regional Practice Density

68 Specialists

Practicing in Duluth, MN (2726 Statewide)

Telehealth Adoption Rate

19.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

65.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Diaz (43 Years) 43 Yrs

Duluth Specialty Average (21.6 Years) 21.6 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	168	99	$220.54	$91.20
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	40	22	$476.80	$146.66
99306 Initial nursing facility visit, typically 45 minutes per day	39	37	$570.77	$173.14
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	24	24	$265.75	$126.10
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	20	16	$446.80	$146.61

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	248	150	$218.61	$91.83
99306 Initial nursing facility visit, typically 45 minutes per day	29	27	$543.00	$175.55
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	20	17	$442.00	$147.78
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	17	11	$442.00	$148.08
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	14	14	$256.00	$125.97

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	333	206	$210.03	$95.34
99306 Initial nursing facility visit, typically 45 minutes per day	41	40	$527.78	$159.51
99213 Established patient office or other outpatient visit, typically 15 minutes	39	28	$161.38	$64.96
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	28	21	$430.75	$129.75
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	24	24	$248.67	$128.87
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	16	12	$432.81	$129.68

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	355	233	$202.70	$96.88
99306 Initial nursing facility visit, typically 45 minutes per day	50	46	$509.50	$160.12
99213 Established patient office or other outpatient visit, typically 15 minutes	36	20	$177.94	$65.03
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	36	26	$416.00	$132.27
G0179 Physician re-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 to affirm the initial imp	23	13	$136.00	$40.94
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	20	12	$415.00	$132.27
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	16	13	$167.00	$52.63

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	305	193	$219.18	$77.69
99306 Initial nursing facility visit, typically 45 minutes per day	70	62	$492.57	$164.05
99213 Established patient office or other outpatient visit, typically 15 minutes	40	25	$166.40	$50.53
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	26	20	$403.46	$133.92
99443 Telephone medical discussion with physician, 21-30 minutes	20	19	$320.00	$78.20
99442 Telephone medical discussion with physician, 11-20 minutes	14	12	$218.50	$50.65
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	14	12	$167.00	$53.19

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	392	260	$186.44	$76.75
99306 Initial nursing facility visit, typically 45 minutes per day	108	100	$467.14	$163.03
99213 Established patient office or other outpatient visit, typically 15 minutes	54	38	$127.78	$49.80
G0179 Physician re-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 to affirm the initial imp	28	11	$136.00	$40.78
99316 Nursing facility discharge management, more than 30 minutes	24	22	$358.50	$103.31
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	22	18	$167.00	$52.41
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	18	14	$377.00	$132.47
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	17	17	$217.59	$114.24

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	396	249	$140.24	$76.73
99306 Initial nursing facility visit, typically 45 minutes per day	113	99	$448.00	$163.58
99213 Established patient office or other outpatient visit, typically 15 minutes	94	68	$88.31	$49.76
99316 Nursing facility discharge management, more than 30 minutes	44	42	$351.00	$103.71
G0179 Physician re-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 to affirm the initial imp	34	12	$136.00	$41.42
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	20	20	$279.60	$169.10
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	16	14	$361.00	$133.55
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	16	16	$215.00	$115.19
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	15	13	$167.00	$53.03

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	416	257	$91.84	$76.50
99213 Established patient office or other outpatient visit, typically 15 minutes	105	82	$59.81	$49.53
99306 Initial nursing facility visit, typically 45 minutes per day	65	65	$448.00	$160.80
G0179 Physician re-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 to affirm the initial imp	38	12	$136.00	$41.01
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	26	23	$358.23	$132.69
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	24	24	$262.67	$168.02
99316 Nursing facility discharge management, more than 30 minutes	21	20	$351.00	$103.10
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	18	16	$167.00	$53.02
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	15	15	$214.73	$108.91

Medical Specialties & State Licenses

CMS Verified: 2020-06-22

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MN 44952

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.

Internal Medicine - Geriatric Medicine

NUCC Taxonomy Code: 207RG0300X

State License MN 44952

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

442858700 (MN)

Hospital & Practice Group Affiliations

Polinsky Medical Rehabilitation Center

1600 Miller Trunk Hwy, Duluth, MN 558115640

Phone: 2187865360

Practice Associates & Co-Workers

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

40 Associated Practitioners

Molly Dwyer , APRN, CNP

Nurse Practitioner - Psychiatric/Mental Health

NPI 1003468760

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Dr. Amy Larson , MD

Hospitalist

NPI 1003565292

Doctor of Medicine (M.D.)

Kelsey O'neil , APRN, CNP

Nurse Practitioner - Family

NPI 1003677303

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Annette Barker

Nurse Practitioner - Family

NPI 1003845595

Bruce Derauf

Radiology - Diagnostic Radiology

NPI 1003847385

Nizar Saleh

Internal Medicine - Cardiovascular Disease

NPI 1003857889

Career & Practice History Timeline

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

7 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 22, 2020

Internal Medicine (License #44952 in MN)

✅

NPI Profile Active May 09, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location May 09, 2011

Registered at 400 E 3RD ST, DULUTH, MN 558051951 (Tel: 2187868364)

📍

Updated Business Mailing Address May 09, 2011

Registered at 400 E 3RD ST, DULUTH, MN 558051951 (Tel: 2187868364)

👤

Provider Name / Credentials Updated May 09, 2011

Recorded as JOSEFINO DIAZ

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 09, 2011

Internal Medicine (License #44952 in MN)

🟢

Initial NPI Registration & Enumeration June 29, 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: 1891723599

Entity Type:

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

Enumeration Date: June 29, 2006

Last Update: June 22, 2020

Sole Proprietor: No

Update or Correct Profile

Mailing Address

400 E 3rd St

Duluth, MN 558051951

Phone: 2187868364

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.