Stephen Kolpacoff, MD
Family Medicine Physician · Yreka, CA
Stephen Kolpacoff, MD is a family medicine physician with a practice address in Yreka, California, and NPI 1437153384, issued on Jun 9, 2005. Check the license (California G61132, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Kolpacoff
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G61132 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 E Oberlin RD, Yreka, CA 96097
- Phone
- (530) 841-8513
- Enumerated
- Jun 9, 2005
- Record last updated
- May 16, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (530) 842-9640
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 101 E Oberlin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Malony, MS, RDRegistered Dietitian1164545778
Verify Stephen Kolpacoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G61132Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
168 Medicare Part D claims for 47 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin19 claims
- Hydrochlorothiazide11 claims
- Nitrofurantoin Mono-Macro11 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.
Stephen Kolpacoff among 17,133 family medicine physician records in California
Stephen Kolpacoff, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2019 · 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).
13 family medicine physician records list a practice address in Yreka
They are 13 of the 424 NPPES records with a practice address in Yreka, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Yreka → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Judy Broeckel, M.D.Yreka, CA 960971831116821
- Louis Derouchey, MDYreka, CA 960971407850498
- David Herfindahl, M.DYreka, CA 960971831115237
- Savannah Kenny, FNPYreka, CA 960971538635065
- Mathilde Moazazi, M.D.Yreka, CA 960971366671224
- Jon Mundall, MDYreka, CA 960971063435576
- Barbara North, M.D.Yreka, CA 960971295802312
- Samuel Rabinowitz, M.D.Yreka, CA 960971497844088
Common questions
What is Stephen Kolpacoff, MD's NPI number?
Stephen Kolpacoff, MD's National Provider Identifier (NPI) is 1437153384, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Kolpacoff, MD located?
The NPPES record lists a practice address at 101 E Oberlin RD, Yreka, CA, 96097. Phone: (530) 841-8513. Providers update this record themselves, so call before visiting.
How can I verify Stephen Kolpacoff, MD's license?
NPPES lists California license number G61132, 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 Stephen Kolpacoff, MD prescribe under Medicare Part D?
In 2024, Stephen Kolpacoff, MD had 168 Medicare Part D claims for 47 beneficiaries; 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.