Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Tanja O'Connor, DO

Individual provider Obstetrics & Gynecology Physician · NPI 1609978741

Tanja O'Connor, DO practises Obstetrics/Gynecology in Ephrata, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 1987, 39 years ago. Practices with Wellspan Medical Group, a 2,342-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
39
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
PA
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

175 Martin Ave Ste 125
Ephrata, PA 17522-1761
Phone: (717) 721-5700
Fax: (717) 715-1296
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 35 Erick Rd, Lancaster, PA 17601-3111 — (717) 721-5700
  • 845 Helen Dr, Lebanon, PA 17042-7493 — (717) 273-8835
  • 6 W Newport Rd Ste 7, Lititz, PA 17543-7774 — (717) 721-5700

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 05009575L (PA)

Record details

NPI number1609978741
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedSeptember 1, 2006
Last updated in NPPESSeptember 30, 2026
Certification dateSeptember 30, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1987 (39 years in practice)
Group practice Wellspan Medical Group — 2342 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients50
Services billed 89 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Wellspan Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2342 clinicians in the practice; 12 are shown here.

Other providers in Ephrata