Katherine Renee Newcomb, M.D.
Internal Medicine Physician · Groveland, CA
Katherine Renee Newcomb, M.D. is an internal medicine physician with a practice address in Groveland, California, and NPI 1528193786, issued on Feb 21, 2007. Check the license (California G59102, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine Renee Newcomb
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G59102 CA
Self-reported in NPPES; status is on the state search - Practice location
- 21340 Beaver CT, Groveland, CA 95321
- Phone
- (209) 962-4611
- Enumerated
- Feb 21, 2007
- Record last updated
- Apr 4, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (209) 962-5860
- Medicare enrollment
- Enrolled (PECOS I20200528002390); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Katherine Renee Newcomb in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G59102Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% more Medicare Part D claims than the average internal medicine physician in 2024
5,955 Medicare Part D claims for 391 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 120 claims were for opioids.
Most prescribed
- Atorvastatin Calcium443 claims
- Amlodipine Besylate309 claims
- Metoprolol Succinate290 claims
- Levothyroxine Sodium198 claims
- Omeprazole194 claims
- Lisinopril192 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 practice group's MIPS final score for 2023 (Medicare payment program): 83.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- St Lukes Clinic-Treasure Valley LLCBoise, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Renee Newcomb among 17,696 internal medicine physician records in California
Katherine Renee Newcomb, 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1985 · median 2004 among the 11,065 with a school on file
- Record last updated2013 · 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).
1 internal medicine physician record lists a practice address in Groveland
They are 1 of the 44 NPPES records with a practice address in Groveland, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Groveland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Soma Krishnamoorthi, M.D.Escalon, CA 953201013011055
- Marissa Wen, MDLathrop, CA 953301467999169
- Robert Southmayd, D.O.Ceres, CA 953071982700969
- Maria Bacay, MDManteca, CA 953361679599070
- Bernard Bacay, MDManteca, CA 953361629094032
- Santokh Bhullar, MDManteca, CA 953361760594105
- Russell Carter, MDManteca, CA 953361528049988
- Terry Croasdale, M.D.Manteca, CA 953361295713147
Common questions
What is Katherine Renee Newcomb, M.D.'s NPI number?
Katherine Renee Newcomb, M.D.'s National Provider Identifier (NPI) is 1528193786, issued on Feb 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Renee Newcomb, M.D. located?
The NPPES record lists a practice address at 21340 Beaver CT, Groveland, CA, 95321. Phone: (209) 962-4611. Providers update this record themselves, so call before visiting.
How can I verify Katherine Renee Newcomb, M.D.'s license?
NPPES lists California license number G59102, 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 Katherine Renee Newcomb, M.D. prescribe under Medicare Part D?
In 2024, Katherine Renee Newcomb, M.D. had 5,955 Medicare Part D claims for 391 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Katherine Renee Newcomb, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.3 of 100, reported for the practice group. 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.