Mary E. Barnum, RN, FNP
Family Nurse Practitioner · Medford, OR
Mary E. Barnum, RN, FNP is a family nurse practitioner with a practice address in Medford, Oregon, and NPI 1528390937, issued on Feb 10, 2010. Check the license (Oregon 201050019NP, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary E. Barnum
- Credential
- RN, FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 201050019NP OR
087000076RN OR
Self-reported in NPPES; status is on the state search - Practice location
- 800 E Main St, Medford, OR 97504
- Phone
- (541) 608-7683
- Enumerated
- Feb 10, 2010
- Record last updated
- Sep 16, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (541) 608-7689
- Medicaid ID
- 500635312 OR
- Medicare enrollment
- Enrolled (PECOS I20100416000501); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,384 in Oregon → Look up another NPI →
Also registered at 800 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristine Groskopp, DOFamily Medicine Physician1164446829
- Anne Ryland, PAPhysician Assistant1760683056
Verify Mary E. Barnum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 201050019NPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% more Medicare Part D claims than the average family nurse practitioner in 2024
2,454 Medicare Part D claims for 199 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 49 claims were for opioids.
Most prescribed
- Levothyroxine Sodium185 claims
- Atorvastatin Calcium105 claims
- Omeprazole104 claims
- Lisinopril87 claims
- Rosuvastatin Calcium77 claims
- Metoprolol Succinate69 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.
Industry payments in 2024: $15.97
1 payment: food and beverage; the largest payer was Tactile Systems Technology Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mary E. Barnum among 2,384 family nurse practitioner records in Oregon
Mary E. Barnum, RN, FNP is one of 2,384 family nurse practitioner 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 2010, is newer than 32% of them.
- NPI issued2010 · 32% of these records are older, 65% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2009 · median 2017 among the 1,390 with a school on file
- Record last updated2013 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
167 family nurse practitioner records list a practice address in Medford
They are 167 of the 4,542 NPPES records with a practice address in Medford, and 2,384 family nurse practitioner records in Oregon.
All 2,384 in Oregon → Every provider in Medford → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Patricia Armstrong, FNPMedford, OR 975041548267214
- Melodee Badley, FNPMedford, OR 975041144250432
- Margaret Bismarck, FNPMedford, OR 975041427093301
- Caroline Dryland, FNPMedford, OR 975041285672873
- Cynthia Harper, MSN, FNPMedford, OR 975041578560116
- Mason Harrison, F.N.P.Medford, OR 975041356355846
- Kenneth Millsap, NPMedford, OR 975041750305066
- Sarah Roberson, FNPMedford, OR 975041275641730
Common questions
What is Mary E. Barnum, RN, FNP's NPI number?
Mary E. Barnum, RN, FNP's National Provider Identifier (NPI) is 1528390937, issued on Feb 10, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary E. Barnum, RN, FNP located?
The NPPES record lists a practice address at 800 E Main St, Medford, OR, 97504. Phone: (541) 608-7683. Providers update this record themselves, so call before visiting.
How can I verify Mary E. Barnum, RN, FNP's license?
NPPES lists Oregon license number 201050019NP, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Mary E. Barnum, RN, FNP prescribe under Medicare Part D?
In 2024, Mary E. Barnum, RN, FNP had 2,454 Medicare Part D claims for 199 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.