Clayton Thomas Naddell, MD
Internal Medicine Physician · Mission Hills, CA
Clayton Thomas Naddell, MD is an internal medicine physician with a practice address in Mission Hills, California, and NPI 1699126904, issued on Jun 28, 2016. Check the license (California A156330, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Clayton Thomas Naddell
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A156330 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11600 Indian Hills RD Ste 102, Mission Hills, CA 91345
- Phone
- (818) 838-4500
- Enumerated
- Jun 28, 2016
- Record last updated
- Mar 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20191025001390); accepts Medicare assignment
- Medical or professional school
- Morehouse School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 11600 Indian Hills RD Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danny Dursun, M.D.Internal Medicine Physician1790005080
- Avinash Gururaja, MDFamily Medicine Physician1518990035
- Ana Navarro, NPFamily Nurse Practitioner1689296337
Verify Clayton Thomas Naddell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A156330Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.1 times the Medicare Part D claims of the average internal medicine physician in 2024
12,989 Medicare Part D claims for 862 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 102 claims were for opioids.
Most prescribed
- Atorvastatin Calcium975 claims
- Metformin Hcl584 claims
- Amlodipine Besylate527 claims
- Lisinopril433 claims
- Losartan Potassium420 claims
- Rosuvastatin Calcium382 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
- Healthcare Partners Affiliates Medical GroupMission Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clayton Thomas Naddell among 17,696 internal medicine physician records in California
Clayton Thomas Naddell, MD 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 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2016 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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).
89 internal medicine physician records list a practice address in Mission Hills
They are 89 of the 731 NPPES records with a practice address in Mission Hills, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Mission Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joseph Chambers, MD.Mission Hills, CA 913451467435297
- Delora Climaco, MD.Mission Hills, CA 913451407880743
- Jay Dhiman, MDMission Hills, CA 913451598758245
- Jose Esparrago, M.D.Mission Hills, CA 913451083616106
- Noel Flores, M.D.Mission Hills, CA 913451316921000
- Jennifer Hyer, D.O.Mission Hills, CA 913451770567711
- Manoj Mathew, M.D.Mission Hills, CA 913451962479816
- Jaganath Naidu, MDMission Hills, CA 913451447283924
Common questions
What is Clayton Thomas Naddell, MD's NPI number?
Clayton Thomas Naddell, MD's National Provider Identifier (NPI) is 1699126904, issued on Jun 28, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Clayton Thomas Naddell, MD located?
The NPPES record lists a practice address at 11600 Indian Hills RD Ste 102, Mission Hills, CA, 91345. Phone: (818) 838-4500. Providers update this record themselves, so call before visiting.
How can I verify Clayton Thomas Naddell, MD's license?
NPPES lists California license number A156330, 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 Clayton Thomas Naddell, MD prescribe under Medicare Part D?
In 2024, Clayton Thomas Naddell, MD had 12,989 Medicare Part D claims for 862 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.