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JOHN CARL ONDERKO PAC
NPI 1548231863
Physician Assistant in Johnstown, PA

Active since January 27, 2006PECOS EnrolledAccepts Medicare Assignment
334 BLOOMFIELD ST, STE 205, JOHNSTOWN, PA 15904(814) 266-8686(814) 266-6478 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

About John Carl Onderko Pac NPPES

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

JOHN CARL ONDERKO PAC (NPI 1548231863) is an individual physician assistant in Johnstown, Pennsylvania, licensed in Pennsylvania (MA000154L) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Conemaugh Memorial Medical Center, and is a graduate of Other (1979).

NPPES Registry Identity

NPI1548231863
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameJOHN CARL ONDERKOCredential: PAC
Location Address334 BLOOMFIELD ST, STE 205Johnstown, PA 15904
Mailing Address334 Bloomfield St, Ste 205Johnstown, PA 15904 · (814) 266-8686 · Fax (814) 266-6478
Phone(814) 266-8686
Fax(814) 266-6478
Sole ProprietorNo
Medical School CMSOtherGraduated 1979
Enumeration DateJanuary 27, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1548231863 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in PA · MA000154L
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
334 BLOOMFIELD ST, Johnstown, PA 15904
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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 Carl Onderko Pac 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 ID5597787606
PECOS Enrollment IDI20060103000422
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 3

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 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.
56 services33 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
20 services15 patients
Annual alcohol misuse screening, 5 to 15 minutes G0442
An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.
14 services14 patients

Hospital Affiliations CMS Care Compare

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

Conemaugh Memorial Medical Center

Acute Care Hospitals · Johnstown, PA
3/5 CMS rating
OwnershipProprietary
CMS Certification Number390110
Location1086 Franklin StreetJohnstown, PA 15905 · Cambria County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 15904 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
$84.88 typical visit price
range $54.64 – $166.87
Typical copayment $21.22 (range $13.66 – $41.71)
Most-billed visit code 99203
Established Patient
$68.36 typical visit price
range $17.33 – $135.84
Typical copayment $17.09 (range $4.33 – $33.96)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

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

FOOTSTEPS PSYCHOLOGICAL SERVICES
Community/Behavioral Health
334 BLOOMFIELD ST, SUITE 202
JOHNSTOWN, PA 15904
Cambria County (814) 266-5238
TAMMY K HASLETT PH D
Psychologist
334 BLOOMFIELD ST, SUITE 204
JOHNSTOWN, PA 15904
Cambria County (814) 266-5238
FOOTSTEPS PSYCHOLOGICAL SERVICES
Counselor (Professional)
334 BLOOMFIELD ST, SUITE 204
JOHNSTOWN, PA 15904
Cambria County (814) 266-5238
CHARLES WILBUR STOTLER MD
Family Medicine
334 BLOOMFIELD ST, STE 205
JOHNSTOWN, PA 15904
Cambria County (814) 266-8686
CHARLES W. STOTLER, M.D.
Family Medicine
334 BLOOMFIELD ST, SUITE 205
JOHNSTOWN, PA 15904
Cambria County (814) 266-8686
MRS. MELISSA JAY LEONARDIS PA
Physician Assistant
334 BLOOMFIELD ST
JOHNSTOWN, PA 15904
Cambria County (814) 266-8686
FOOTSTEPS PSYCHOLOGICAL SERVICES
Psychologist
334 BLOOMFIELD ST, SUITE 104
JOHNSTOWN, PA 15904
Cambria County (814) 266-5238

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Onderko's NPI number?

The NPI number for John Onderko is 1548231863. It was assigned to this individual provider in the NPPES registry on January 27, 2006.

Where is John Onderko located?

John Onderko practices at 334 Bloomfield St Ste 205, Johnstown, PA 15904. The listed phone number is (814) 266-8686.

What is John Onderko's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is John Onderko enrolled in Medicare?

Yes. John Onderko is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is John Onderko affiliated with any hospitals?

According to CMS data, John Onderko is affiliated with Conemaugh Memorial Medical Center.

When was this NPI record last updated?

The NPPES record for John Onderko was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.