Edward Kerwin, M.D.
Allergy Physician · Medford, OR
Edward Kerwin, M.D. is an allergy physician with a practice address in Medford, Oregon, and NPI 1568465847, issued on May 31, 2005. Check the license (Oregon MD18405, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Edward Kerwin
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- MD18405 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3860 Crater Lake Ave, Medford, OR 97504
- Phone
- (541) 858-1003
- Enumerated
- May 31, 2005
- Record last updated
- Jul 10, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (541) 858-1091
- Medicaid ID
- 056700 OR
- Medicare enrollment
- Enrolled (PECOS I20040427000191); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 1988
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 10 in Oregon → Look up another NPI →
Also registered at 3860 Crater Lake Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arundhati Chandini Arjun, MDAllergy & Immunology (Internal Medicine) Physician1356952261
- Kary Kelly, NP-PPFamily Nurse Practitioner1356795504
- Jaleh Ostovar, FNP-CFamily Nurse Practitioner1962503961
- Kevin Parks, M.D.Allergy Physician1467499475
Verify Edward Kerwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD18405Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average allergy physician in 2024
511 Medicare Part D claims for 132 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Prednisone91 claims
- Fluticasone-Salmeterol65 claims
- Albuterol Sulfate Hfa64 claims
- Fluticasone Propionate60 claims
- Montelukast Sodium49 claims
- Breo Ellipta31 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.
The MIPS final score for 2023 (Medicare payment program): 27.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Allergy And Asthma Center OF Southern Oregon, PCRoseburg, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Edward Kerwin among 10 allergy physician records in Oregon
Edward Kerwin, M.D. is one of 10 allergy physician records with a practice address in Oregon. 40% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 70% newer
- In a Medicare fileYes · 40% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Record last updated2020 · 80% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in Oregon
There are 10 allergy physician records in Oregon.
All 10 in Oregon → Every provider in Medford → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Kevin Parks, M.D.Medford, OR 975041467499475
- Alice Chou, MDEugene, OR 974011508802521
- Candice Rohr, MDEugene, OR 974011326084344
- Joel Depper, M.D.Bend, OR 977011194733519
- Kevin Kral, M.D.Bend, OR 977011134100092
- Laurel Anderson Cowell, MDPortland, OR 972251356346217
- Anita Tam Su, MDPortland, OR 972131891905261
- Robert Schwartz, MDPortland, OR 972111568482610
Common questions
What is Edward Kerwin, M.D.'s NPI number?
Edward Kerwin, M.D.'s National Provider Identifier (NPI) is 1568465847, issued on May 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Edward Kerwin, M.D. located?
The NPPES record lists a practice address at 3860 Crater Lake Ave, Medford, OR, 97504. Phone: (541) 858-1003. Providers update this record themselves, so call before visiting.
How can I verify Edward Kerwin, M.D.'s license?
NPPES lists Oregon license number MD18405, 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 Edward Kerwin, M.D. prescribe under Medicare Part D?
In 2024, Edward Kerwin, M.D. had 511 Medicare Part D claims for 132 beneficiaries; the average among allergy physician prescribers was 750. Part D covers Medicare prescriptions only.
What is Edward Kerwin, M.D.'s MIPS final score?
The 2023 MIPS final score is 27.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.