Ranjana S. Nathan, MD
Internal Medicine Physician · Tigard, OR
Ranjana S. Nathan, MD is an internal medicine physician with a practice address in Tigard, Oregon, and NPI 1588690127, issued on Jun 24, 2006. Check the license (Oregon MD18451, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ranjana S. Nathan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD18451 OR
Self-reported in NPPES; status is on the state search - Practice location
- 12442 SW Scholls Ferry RD, Tigard, OR 97223
- Phone
- (503) 216-9200
- Enumerated
- Jun 24, 2006
- Record last updated
- Mar 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (503) 216-9220
- Medicaid ID
- 121439 OR
- Medicare enrollment
- Enrolled (PECOS I20100610000158); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 12442 SW Scholls Ferry RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandra Antonovic, M.D.Pediatrics Physician1184773319
- Evagelia Baros, DOInternal Medicine Physician1003019340
- Kathryn Carr, P.T.Physical Therapist1174724736
- Rebecca CrowderStudent in an Organized Health Care Education/Training Program1750256236
- Kirsten Crowley, MDPediatrics Physician1396838280
- Mary Dunlap, ANPAdult Health Nurse Practitioner1629002639
Verify Ranjana S. Nathan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD18451Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average internal medicine physician in 2024
10,341 Medicare Part D claims for 721 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 113 claims were for opioids.
Most prescribed
- Atorvastatin Calcium852 claims
- Levothyroxine Sodium604 claims
- Amlodipine Besylate506 claims
- Losartan Potassium391 claims
- Metoprolol Succinate380 claims
- Omeprazole288 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Providence Health And Services OregonTigard, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ranjana S. Nathan among 2,116 internal medicine physician records in Oregon
Ranjana S. Nathan, MD is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1988 · median 2008 among the 1,232 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Oregon
There are 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Tigard → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Evagelia Baros, DOTigard, OR 972231003019340
- Milton Blettel, MDTigard, OR 972231336208388
- Brian Burke, MDTigard, OR 972231790822625
- Samuel Fellin, DOTigard, OR 972231265463996
- Heidi Hagman, M.D.Tigard, OR 972231962489575
- Aileen Kim, MDTigard, OR 972231255360657
- Lawrence LangsdorfTigard, OR 972231639101439
- Daniel Mangum, DOTigard, OR 972231710055322
Common questions
What is Ranjana S. Nathan, MD's NPI number?
Ranjana S. Nathan, MD's National Provider Identifier (NPI) is 1588690127, issued on Jun 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ranjana S. Nathan, MD located?
The NPPES record lists a practice address at 12442 SW Scholls Ferry RD, Tigard, OR, 97223. Phone: (503) 216-9200. Providers update this record themselves, so call before visiting.
How can I verify Ranjana S. Nathan, MD's license?
NPPES lists Oregon license number MD18451, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ranjana S. Nathan, MD prescribe under Medicare Part D?
In 2024, Ranjana S. Nathan, MD had 10,341 Medicare Part D claims for 721 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.