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TAMMY NADINE O'NEILL PA-C
NPI 1548454101
Physician Assistant in Bishop, CA

Active since August 28, 2007PECOS EnrolledAccepts Medicare Assignment
153 PIONEER LN STE B, BISHOP, CA 93514(760) 873-2849 Get Directions Write a Review

NPPES record last updated: June 16, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Tammy Nadine O'neill Pa-c NPPES

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

TAMMY NADINE O'NEILL PA-C (NPI 1548454101) is an individual physician assistant in Bishop, California, licensed in California (PA23196) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Bishop, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1548454101
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameTAMMY NADINE O'NEILLCredential: PA-C
Location Address153 PIONEER LN STE BBishop, CA 93514-2517
Mailing Address150 Pioneer LnBishop, CA 93514-2556 · (760) 873-5811 · Fax (760) 873-2626
Phone(760) 873-2849
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateAugust 28, 2007
Last NPPES UpdateJune 16, 2026
NPPES CertifiedJune 16, 2026
✔ NPI 1548454101 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Licenses✔ Licensed in CA · PA23196✔ Licensed in WA · PA10005256
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.
153 PIONEER LN STE B, Bishop, CA 93514
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Secondary Practice Location 1

Location 1150 Pioneer LnBishop, CA 93514-2556 · Phone (760) 873-5811

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

Tammy Nadine O'neill Pa-c 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 ID7315034287
PECOS Enrollment IDI20170726003290
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93514 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
$90.32 typical visit price
range $58.87 – $176.60
Typical copayment $22.58 (range $14.71 – $44.15)
Most-billed visit code 99203
Established Patient
$73.16 typical visit price
range $19.28 – $144.60
Typical copayment $18.29 (range $4.82 – $36.15)
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 16

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

MARGO MARIE LELLA APRN, FNP
Nurse Practitioner (Family)
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-2849
DR. THOMAS JOSEPH BOO MD
Family Medicine
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-2849
ROBYN LISA LEE CNM
Advanced Practice Midwife
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-5811
UTTAMA SHARMA MD
Family Medicine
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-2849
JENNIFER FIGUEROA PA
Physician Assistant
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-2602
NORTHERN INYO HEALTHCARE DISTRICT
Clinic/Center (Rural Health)
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-2849
JENNIFER L. NORRIS CNM
Advanced Practice Midwife
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-2602
MS. LOIS ALEXANDER FNP
Nurse Practitioner
153 PIONEER LN STE B
BISHOP, CA 93514
Mono County (760) 873-2849

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 Tammy O'neill's NPI number?

The NPI number for Tammy O'neill is 1548454101. It was assigned to this individual provider in the NPPES registry on August 28, 2007.

Where is Tammy O'neill located?

Tammy O'neill practices at 153 Pioneer Ln Ste B, Bishop, CA 93514. The listed phone number is (760) 873-2849.

What is Tammy O'neill's specialty?

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

Is Tammy O'neill enrolled in Medicare?

Yes. Tammy O'neill 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.

When was this NPI record last updated?

The NPPES record for Tammy O'neill was last updated on June 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 50 days 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.