Karen Muchowski, MD
Family Medicine Physician · Temecula, CA
Karen Muchowski, MD is a family medicine physician with a practice address in Temecula, California, and NPI 1699791178, issued on Jul 15, 2006. Check the license (California C54621, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Muchowski
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- C54621 CA
MD20723 OR
MD00041586 WA
Self-reported in NPPES; status is on the state search - Practice location
- 31795 Rancho California RD Ste B-700, Temecula, CA 92591
- Phone
- (760) 291-6700
- Enumerated
- Jul 15, 2006
- Record last updated
- Dec 12, 2024
- Fax
- (951) 294-9039
- Medicaid ID
- 8241044 WA
- Medicare enrollment
- Enrolled (PECOS I20160518001761); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 31795 Rancho California RD Ste B-700
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly Boyatt, M.D.Family Medicine Physician1295784130
- Jordan Price, DOInternal Medicine Physician1437786688
Verify Karen Muchowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C54621Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average family medicine physician in 2024
2,032 Medicare Part D claims for 177 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 72 claims were for opioids.
Most prescribed
- Atorvastatin Calcium150 claims
- Losartan Potassium99 claims
- Levothyroxine Sodium85 claims
- Amlodipine Besylate84 claims
- Lisinopril68 claims
- Omeprazole62 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: $303.88
17 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
Bills Medicare through one group practice
- Graybill Medical Group IncMurrieta, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Muchowski among 17,133 family medicine physician records in California
Karen Muchowski, 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 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 fileYes · 62% of these records are
- Graduated1996 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 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).
80 family medicine physician records list a practice address in Temecula
They are 80 of the 4,057 NPPES records with a practice address in Temecula, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Temecula → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Alwin Bagingito, M.D.Temecula, CA 925911821172065
- Kelly Boyatt, M.D.Temecula, CA 925911295784130
- Jay Ferns, D.O.Temecula, CA 925911003911892
- Roland Fuertez, M.D.Temecula, CA 925911952475428
- Erik Lundquist, M.D.Temecula, CA 925911508845181
- James Nevins, M.D.Temecula, CA 925911285696534
- Consuelo Ocampo, MDTemecula, CA 925911952408981
- Kristin Olah, M.D.Temecula, CA 925911811970916
Common questions
What is Karen Muchowski, MD's NPI number?
Karen Muchowski, MD's National Provider Identifier (NPI) is 1699791178, issued on Jul 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Muchowski, MD located?
The NPPES record lists a practice address at 31795 Rancho California RD Ste B-700, Temecula, CA, 92591. Phone: (760) 291-6700. Providers update this record themselves, so call before visiting.
How can I verify Karen Muchowski, MD's license?
NPPES lists California license number C54621, 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 Karen Muchowski, MD prescribe under Medicare Part D?
In 2024, Karen Muchowski, MD had 2,032 Medicare Part D claims for 177 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.