NPPES file of Aug 9, 2026

Kelly Sowa Siemens, M.D.

Family Medicine Physician · Davis, CA

Kelly Sowa Siemens, M.D. is a family medicine physician with a practice address in Davis, California, and NPI 1760467435, issued on Dec 14, 2005. Check the license (California A073249, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1760467435
Name
Kelly Sowa Siemens
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A073249 CA
Self-reported in NPPES; status is on the state search
Practice location
2660 W Covell Blvd, Davis, CA 95616
Phone
(530) 747-3000
Enumerated
Dec 14, 2005
Record last updated
Apr 21, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(530) 747-3080
Medicare enrollment
Enrolled (PECOS I20081209000569); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 1998
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 2660 W Covell Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Thomas Alan, M.D.Internal Medicine Physician1235115635
  2. Jonathan Chiang, DOFamily Medicine Physician1497117071
  3. Anmol Chohan, M.DInternal Medicine Physician1386917177
  4. Karen Chung, MDFamily Medicine Physician1699100560
  5. Jacob Dima, D.O.Family Medicine Physician1205152295
  6. Heidi Henchell, DOFamily Medicine Physician1598860959

Verify Kelly Sowa Siemens in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A073249    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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20% more Medicare Part D claims than the average family medicine physician in 2024

4,241 Medicare Part D claims for 348 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 217 claims were for opioids.

  1. Kelly Siemens4,241
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium241 claims
  2. Levothyroxine Sodium232 claims
  3. Amlodipine Besylate169 claims
  4. Losartan Potassium135 claims
  5. Hydrocodone-Acetaminophen117 claims
  6. Gabapentin96 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.

Bills Medicare through one group practice

  1. Regents OF The University OF CaliforniaSacramento, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kelly Sowa Siemens among 17,133 family medicine physician records in California

Kelly Sowa Siemens, 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 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 fileYes · 62% of these records are
  • Graduated1998 · median 2005 among the 10,652 with a school on file
  • Record last updated2011 · 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).

96 family medicine physician records list a practice address in Davis

They are 96 of the 1,711 NPPES records with a practice address in Davis, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Davis → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Lisa Baumeister, MDDavis, CA 956161952354805
  2. John Chuck, M.D.Davis, CA 956161164408704
  3. Rebecca Darsey, MDDavis, CA 956161447240916
  4. Wetona Eidson-Ton, M.D.Davis, CA 956161609851674
  5. Sarah Jones, MDDavis, CA 956161306882030
  6. Melissa Marshall, M.D.Davis, CA 956161477526291
  7. Karen Mo, M.D.Davis, CA 956161326023086
  8. Thomas Ormiston, MDDavis, CA 956161568498319

Common questions

What is Kelly Sowa Siemens, M.D.'s NPI number?

Kelly Sowa Siemens, M.D.'s National Provider Identifier (NPI) is 1760467435, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Kelly Sowa Siemens, M.D. located?

The NPPES record lists a practice address at 2660 W Covell Blvd, Davis, CA, 95616. Phone: (530) 747-3000. Providers update this record themselves, so call before visiting.

How can I verify Kelly Sowa Siemens, M.D.'s license?

NPPES lists California license number A073249, 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 Kelly Sowa Siemens, M.D. prescribe under Medicare Part D?

In 2024, Kelly Sowa Siemens, M.D. had 4,241 Medicare Part D claims for 348 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.