JOHN YOONKEUN JUN M.D.
NPI 1487878559
Internal Medicine - Endocrinology, Diabetes & Metabolism in Toledo, OH

Q: What is John Jun's NPI number?

The NPI number for John Jun is 1487878559. It was assigned to this individual provider in the NPPES registry on April 12, 2007.

Q: What is John Jun's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for John Jun was last updated on February 10, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 12, 2007PECOS EnrolledAccepts Medicare Assignment

2100 W CENTRAL AVE FL 2, TOLEDO, OH 43606(567) 420-1600(567) 420-1633 Get Directions Write a Review

NPPES record last updated: February 10, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 17, 2025, Jul 12, 2019, Dec 29, 2017 (3 updates tracked since 2017).

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About John Yoonkeun Jun M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN YOONKEUN JUN M.D. (NPI 1487878559) is an individual endocrinology, diabetes & metabolism provider in Toledo, Ohio, licensed in Ohio (35.128476) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Toledo Medical Center, and maintains a secondary practice location in Toledo.

NPPES Registry Identity

NPI1487878559

Entity TypeIndividualMale

Primary Taxonomy207RE0101X

Provider Legal NameJOHN YOONKEUN JUNCredential: M.D.

Location Address2100 W CENTRAL AVE FL 2Toledo, OH 43606

Mailing Address3000 Arlington Ave Stop 1108Toledo, OH 43614-2595 · (419) 383-5322

Phone(567) 420-1600

Fax(567) 420-1633

Sole ProprietorNo

Medical School CMSOtherGraduated 1998

Enumeration DateApril 12, 2007

Last NPPES UpdateFebruary 10, 20263 updates tracked since enumeration

NPPES CertifiedFebruary 10, 2026

✔ NPI 1487878559 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

Licenses✔ Licensed in OH · 35.128476✔ Licensed in PA · MT187224

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

2100 W CENTRAL AVE FL 2, Toledo, OH 43606

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Secondary Practice Location 1

Location 13125 Transverse DrToledo, OH 43614-8008 · Phone (419) 383-3780 · Fax (419) 383-2023

Other Identifiers 1

Medicaid0164737OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Yoonkeun Jun M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9830264837

PECOS Enrollment IDI20160527001811

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

79 services58 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

75 services38 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

72 services61 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

47 services43 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

41 services28 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

30 services30 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Toledo Medical Center

Acute Care Hospitals · Toledo, OH

3/5 CMS rating

OwnershipGovernment - State

CMS Certification Number360048

Location3000 Arlington AvenueToledo, OH 43699 · Lucas County

Emergency services

Promedica Toledo Hospital

Acute Care Hospitals · Toledo, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360068

Location2142 North Cove BoulevardToledo, OH 43606 · Lucas County

Emergency services Birthing friendly

Blanchard Valley Hospital

Acute Care Hospitals · Findlay, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number360095

Location1900 South Main StreetFindlay, OH 45840 · Hancock County

Birthing friendly

Bay Park Community Hospital

Acute Care Hospitals · Oregon, OH

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number360259

Location2801 Bay Park DriveOregon, OH 43616 · Lucas County

Emergency services Birthing friendly

Fostoria Community Hospital

Critical Access Hospitals · Fostoria, OH

OwnershipVoluntary non-profit - Private

CMS Certification Number361318

Location501 Van Buren StreetFostoria, OH 44830 · Seneca County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43606 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.12 typical visit price

range $54.34 – $166.65

Typical copayment $31.53 (range $13.58 – $41.66)

Most-billed visit code 99204

Established Patient

$96.44 typical visit price

range $17.10 – $135.40

Typical copayment $24.11 (range $4.27 – $33.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

38%194 patients2/55-star benchmark: 85%

Diabetes: Eye Exam

Percentage of patients 18-75 years of age with diabetes who had a retinal or dilated eye exam by an eye care professional during the measurement period or a negative retinal exam (no evidence of retinopathy) in the 12 months prior to the measurement period

20%200 patients1/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

71%1,298 patients1/55-star benchmark: 99%

Health Information Exchange

The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…

12%109 patients1/55-star benchmark: 88%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

99%173 patients4/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

56%448 patients3/55-star benchmark: 97%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

47%410 patients2/55-star benchmark: 97%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

100%448 patients5/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

56%448 patients3/55-star benchmark: 89%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

42%448 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

4 suppliers44 claims44 services$181.21 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. BASIL E AKPUNONU M.D.

Internal Medicine