Active NPI 1770543159 Individual Practitioner Male Practitioner

Dr. John Joseph Ondrejka , MD

Internal Medicine • Mentor, OH

Professional Overview & Biography Verified Profile Summary

Dr. John Ondrejka, MD is a registered healthcare professional specializing in Internal Medicine in Mentor, OH. Practice services are available at 7956 TYLER BLVD under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, urinalysis, manual test, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

7956 Tyler Blvd

Mentor, OH 440604806

Telephone 4407161283

Fax 4407161605

Associated Practice Facility / Clinic

🏢 Lake Hospital System, Inc Facility NPI 1205896404

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Mentor, OH

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 32.4 Yrs

State Avg: 26.9 Yrs

Regional Practice Density

17 Specialists

Practicing in Mentor, OH (5516 Statewide)

Telehealth Adoption Rate

35.3% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

52.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2020)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	14	14	$106.29	$50.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	131	113	$96.20	$49.86
81002 Urinalysis, manual test	36	30	$4.00	$3.33
99202 New patient office or other outpatient visit, typically 20 minutes	36	36	$101.17	$50.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	24	$145.00	$77.87

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	78	74	$96.17	$49.74
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	35	$139.00	$75.46
99202 New patient office or other outpatient visit, typically 20 minutes	22	22	$96.09	$48.18
81002 Urinalysis, manual test	16	15	$4.00	$3.44

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	63	62	$138.67	$77.01
99213 Established patient office or other outpatient visit, typically 15 minutes	37	35	$90.57	$49.76
99213 Established patient office or other outpatient visit, typically 15 minutes	34	34	$81.21	$49.74
99202 New patient office or other outpatient visit, typically 20 minutes	19	19	$92.53	$49.49
81002 Urinalysis, manual test	18	16	$4.00	$3.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	16	$140.75	$76.59
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$141.25	$75.30
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	11	11	$21.00	$16.26

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License OH 35-055148

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

2073581 (OH)

Commercial Insurance / Payer ID Qualchoice

80507 (OH)

Commercial Insurance / Payer ID United Healthcare

6600162 (OH)

Commercial Insurance / Payer ID Dept Of Labor

264200000 (OH)

Commercial Insurance / Payer ID Medical Mutual Of Ohio

341425870042 (OH)

Commercial Insurance / Payer ID Federal Black Lung

264200000 (OH)

Commercial Insurance / Payer ID Anthem

000000339419 (OH)

Practice Associates & Co-Workers

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

1 Associated Practitioners

Dr. Isabelita Guadiz , MD

Pediatrics

NPI 1366411696

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 February 22, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location February 22, 2016

Registered at 7956 TYLER BLVD, MENTOR, OH 440604806 (Tel: 4407161283)

📍

Updated Business Mailing Address February 22, 2016

Registered at 510 5TH AVE, CHARDON, OH 440241076 (Tel: 4402868908)

👤

Provider Name / Credentials Updated February 22, 2016

Recorded as JOHN ONDREJKA, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 22, 2016

Internal Medicine (License #35-055148 in OH)

🟢

Initial NPI Registration & Enumeration March 28, 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: 1770543159

Entity Type:

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

Enumeration Date: March 28, 2006

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

510 5th Ave

Chardon, OH 440241076

Phone: 4402868908

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.