Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Poombavai O Nagappan, MD

Individual provider Internal Medicine Physician · NPI 1043246689

Poombavai O Nagappan, MD practises Internal Medicine in Tigard, Oregon. Qualified in 1995, 31 years ago. Practices with Providence Health and Services Oregon, a 1,426-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
31
Licensed in
OR
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

12442 SW Scholls Ferry Rd Ste 106
Tigard, OR 97223-3396
Phone: (503) 216-9200
Fax: (503) 216-9220
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD22662 (OR)

Record details

NPI number1043246689
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 24, 2006
Last updated in NPPESOctober 2, 2020
Certification dateOctober 2, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Providence Health And Services Oregon — 1426 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 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 patients231
Services billed 1,010 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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. Those with a page here are linked.

  • Providence St Vincent Medical Center Hospital · Portland, OR
  • Legacy Meridian Park Medical Center Hospital · Tualatin, OR
  • Providence Newberg Medical Center Hospital · Newberg, OR
  • Amedisys Home Health Care Home health agency · Portland, OR
  • Providence Home Health Home health agency · Portland, OR
  • Providence Hospice Hospice · Portland, OR

Colleagues at Providence Health and Services Oregon

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1426 clinicians in the practice; 12 are shown here.

Other providers in Tigard