Diane Korsower, M.D.
Family Medicine Physician · Arcata, CA
Diane Korsower, M.D. is a family medicine physician with a practice address in Arcata, California, and NPI 1710046008, issued on Dec 6, 2006. Check the license (California G37007, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diane Korsower
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G37007 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Harpst St, Arcata, CA 95521
- Phone
- (707) 826-3146
- Enumerated
- Dec 6, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 826-5042
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1 Harpst St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Brown, R.N.Registered Nurse1588029482
- Ruth EppersonStudent in an Organized Health Care Education/Training Program1407307135
- Janiel Giraldo, AMFTMarriage & Family Therapist1023639788
- Jasmine GuerraClinical Social Worker1942095427
- Jamie GutierrezMarriage & Family Therapist1376404780
- Thea LamersHealth & Wellness Coach1003733288
Verify Diane Korsower in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G37007Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
14 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Diane Korsower among 17,133 family medicine physician records in California
Diane Korsower, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2007 · 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 family medicine physician records list a practice address in Arcata
They are 29 of the 829 NPPES records with a practice address in Arcata, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Arcata → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Gerald Alston, MDArcata, CA 955211578650388
- Corinne Basch, M.D.Arcata, CA 955211790853083
- Judy Burns, MDArcata, CA 955211679669253
- Jay Davis, M.D.Arcata, CA 955211083658470
- Alan Glaseroff, M.D.Arcata, CA 955211760569396
- Andrew Hooper, MDArcata, CA 955211053404525
- Gail Hovorka, MDArcata, CA 955211417043969
- Karen March, MDArcata, CA 955211922194687
Common questions
What is Diane Korsower, M.D.'s NPI number?
Diane Korsower, M.D.'s National Provider Identifier (NPI) is 1710046008, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diane Korsower, M.D. located?
The NPPES record lists a practice address at 1 Harpst St, Arcata, CA, 95521. Phone: (707) 826-3146. Providers update this record themselves, so call before visiting.
How can I verify Diane Korsower, M.D.'s license?
NPPES lists California license number G37007, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diane Korsower, M.D. prescribe under Medicare Part D?
In 2024, Diane Korsower, M.D. had 14 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.