Arpna Patel, MD
Internal Medicine Physician · Thousand Oaks, CA
Arpna Patel, MD is an internal medicine physician with a practice address in Thousand Oaks, California, and NPI 1427314178, issued on Apr 6, 2012. Check the license (California A128199, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Arpna Patel
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A128199 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Moody CT Ste 200, Thousand Oaks, CA 91360
- Phone
- (805) 418-3500
- Enumerated
- Apr 6, 2012
- Record last updated
- Feb 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20190416002200); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 100 Moody CT Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Roy Bryan, M.D.Diagnostic Radiology Physician1396021648
- Michael Dorsi, MDNeurological Surgery Physician1942355854
Verify Arpna Patel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A128199Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,007 Medicare Part D claims for 120 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate85 claims
- Atorvastatin Calcium64 claims
- Levothyroxine Sodium61 claims
- Gabapentin41 claims
- Losartan Potassium39 claims
- Rosuvastatin Calcium37 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
- The Regents OF The University OF CaliforniaWestlake Village, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Arpna Patel among 17,696 internal medicine physician records in California
Arpna Patel, 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 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
62 internal medicine physician records list a practice address in Thousand Oaks
They are 62 of the 2,434 NPPES records with a practice address in Thousand Oaks, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Thousand Oaks → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jose-Nitram Aliling, M.D.Thousand Oaks, CA 913601912177759
- Manoj Aswani, M.D.Thousand Oaks, CA 913601801848825
- Pedram Bagheri, MDThousand Oaks, CA 913601578785275
- Russell Hines, M.D.Thousand Oaks, CA 913601548213101
- Christina Jacob, M.D.Thousand Oaks, CA 913601497758957
- Bernard Klein, M.D.Thousand Oaks, CA 913601831382738
- Jane Lindberg, MDThousand Oaks, CA 913601467548149
- Steven McCarthy, M.D.Thousand Oaks, CA 913601497765309
Common questions
What is Arpna Patel, MD's NPI number?
Arpna Patel, MD's National Provider Identifier (NPI) is 1427314178, issued on Apr 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Arpna Patel, MD located?
The NPPES record lists a practice address at 100 Moody CT Ste 200, Thousand Oaks, CA, 91360. Phone: (805) 418-3500. Providers update this record themselves, so call before visiting.
How can I verify Arpna Patel, MD's license?
NPPES lists California license number A128199, 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 Arpna Patel, MD prescribe under Medicare Part D?
In 2024, Arpna Patel, MD had 1,007 Medicare Part D claims for 120 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.