Kathy Marie Clewell, M.D.
Internal Medicine Physician · Poway, CA
Kathy Marie Clewell, M.D. is an internal medicine physician with a practice address in Poway, California, and NPI 1326100835, issued on Dec 14, 2006. Check the license (California G81095, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kathy Marie Clewell
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- G81095 CA
G018095 CA
G08109C CA
Self-reported in NPPES; status is on the state search - Practice location
- 15525 Pomerado RD A-4, Poway, CA 92064
- Phone
- (858) 592-7040
- Enumerated
- Dec 14, 2006
- Record last updated
- Oct 18, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (858) 592-7049
- Medicare enrollment
- Enrolled (PECOS I20080520000231); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1993
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Kathy Marie Clewell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% more Medicare Part D claims than the average internal medicine physician in 2024
4,465 Medicare Part D claims for 275 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 91 claims were for opioids.
Most prescribed
- Atorvastatin Calcium303 claims
- Amlodipine Besylate211 claims
- Levothyroxine Sodium209 claims
- Valsartan177 claims
- Gabapentin144 claims
- Prednisone105 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): 63.8 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).
Industry payments in 2024: $1,193.66
62 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Kathy Marie Clewell among 17,696 internal medicine physician records in California
Kathy Marie Clewell, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2018 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 internal medicine physician records list a practice address in Poway
They are 23 of the 1,306 NPPES records with a practice address in Poway, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Poway → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jerome Brodkin, MDPoway, CA 920641518933878
- David Carty, MDPoway, CA 920641205802568
- Belinda Dure-Smith, MDPoway, CA 920641487620662
- Suzanne Johnston, D.OPoway, CA 920641780787762
- Bill Joswig, MDPoway, CA 920641245206457
- Stuart Klein, MDPoway, CA 920641104834472
- Dennis Mamaril, MDPoway, CA 920641508832601
- Richard Merino, MDPoway, CA 920641174628317
Common questions
What is Kathy Marie Clewell, M.D.'s NPI number?
Kathy Marie Clewell, M.D.'s National Provider Identifier (NPI) is 1326100835, issued on Dec 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kathy Marie Clewell, M.D. located?
The NPPES record lists a practice address at 15525 Pomerado RD A-4, Poway, CA, 92064. Phone: (858) 592-7040. Providers update this record themselves, so call before visiting.
How can I verify Kathy Marie Clewell, M.D.'s license?
NPPES lists California license number G81095, 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 Kathy Marie Clewell, M.D. prescribe under Medicare Part D?
In 2024, Kathy Marie Clewell, M.D. had 4,465 Medicare Part D claims for 275 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Kathy Marie Clewell, M.D.'s MIPS final score?
The 2023 MIPS final score is 63.8 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.