Frank Geoffrey Marx, MD
Internal Medicine Physician · Klamath Falls, OR
Frank Geoffrey Marx, MD is an internal medicine physician with a practice address in Klamath Falls, Oregon, and NPI 1942296678, issued on Sep 27, 2005. Check the license (Oregon 10494, as entered in NPPES) on the Oregon Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Frank Geoffrey Marx
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 10494 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2865 Daggett Ave, Klamath Falls, OR 97601
- Phone
- (541) 274-6311
- Enumerated
- Sep 27, 2005
- Record last updated
- Dec 20, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (541) 884-0730
- Medicaid ID
- 126466 OR
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 2865 Daggett Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Monna Alwine, NURSE PRACTITICIONERAdult Health Nurse Practitioner1215415708
- Mychal Amos, PHARMDPharmacist1992878318
- Jessica Atchley, BSN, RNStudent in an Organized Health Care Education/Training Program1649127937
- Merri Barber, BSN, RN, IBCLCLactation Consultant (Registered Nurse)1073138814
- Susan Barnes, MDAnesthesiology Physician1235210881
Verify Frank Geoffrey Marx in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license 10494Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Frank Geoffrey Marx among 2,116 internal medicine physician records in Oregon
Frank Geoffrey Marx, 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 not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2013 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,116 in Oregon → Every provider in Klamath Falls → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Brown, MDKlamath Falls, OR 976011518353549
- Charles Christensen, MDKlamath Falls, OR 976011801970983
- Charles Cofas, M.D.Klamath Falls, OR 976011053371666
- Sidra Iftikhar, MDKlamath Falls, OR 976011457912966
- Chin Hee Jun, M.D.Klamath Falls, OR 976011477708790
- Mahi Khan, M.D.Klamath Falls, OR 976011699967521
- Kieran Kubac, MDKlamath Falls, OR 976011114487741
- Slavka Kucinska, MDKlamath Falls, OR 976011982698221
Common questions
What is Frank Geoffrey Marx, MD's NPI number?
Frank Geoffrey Marx, MD's National Provider Identifier (NPI) is 1942296678, issued on Sep 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Frank Geoffrey Marx, MD located?
The NPPES record lists a practice address at 2865 Daggett Ave, Klamath Falls, OR, 97601. Phone: (541) 274-6311. Providers update this record themselves, so call before visiting.
How can I verify Frank Geoffrey Marx, MD's license?
NPPES lists Oregon license number 10494, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.