Arash Nafisi, M.D.
Internal Medicine Physician · Valencia, CA
Arash Nafisi, M.D. is an internal medicine physician with a practice address in Valencia, California, and NPI 1831478122, issued on Aug 4, 2011. Check the license (California A126134, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Arash Nafisi
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A126134 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27235 Tourney RD Ste 2500, Valencia, CA 91355
- Phone
- (661) 253-5851
- Enumerated
- Aug 4, 2011
- Record last updated
- Feb 23, 2022
- Fax
- (661) 253-5852
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 27235 Tourney RD Ste 2500
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Arash Nafisi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A126134Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,545 Medicare Part D claims for 167 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium184 claims
- Amlodipine Besylate115 claims
- Metformin Hcl94 claims
- Ozempic88 claims
- Omeprazole74 claims
- Alendronate Sodium53 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.
Arash Nafisi among 17,696 internal medicine physician records in California
Arash Nafisi, 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 2011, is newer than 66% of them.
- NPI issued2011 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2022 · 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).
38 internal medicine physician records list a practice address in Valencia
They are 38 of the 2,083 NPPES records with a practice address in Valencia, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Valencia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Avelino, MDValencia, CA 913551649298738
- David Campa, M.D.Valencia, CA 913551639170228
- Arousha Davatgarzadeh, M.D.Valencia, CA 913551033213111
- Lakhbinder Dhanda, M.D.Valencia, CA 913551104867555
- Eugene Dorio, M.D.Valencia, CA 913551912956434
- Eric Fernandez, M.D.Valencia, CA 913551326052887
- Bhuvaneswari Gowthaman, M.D.Valencia, CA 913551467435107
- Clement Kim, M.D.Valencia, CA 913551558474262
Common questions
What is Arash Nafisi, M.D.'s NPI number?
Arash Nafisi, M.D.'s National Provider Identifier (NPI) is 1831478122, issued on Aug 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Arash Nafisi, M.D. located?
The NPPES record lists a practice address at 27235 Tourney RD Ste 2500, Valencia, CA, 91355. Phone: (661) 253-5851. Providers update this record themselves, so call before visiting.
How can I verify Arash Nafisi, M.D.'s license?
NPPES lists California license number A126134, 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 Arash Nafisi, M.D. prescribe under Medicare Part D?
In 2024, Arash Nafisi, M.D. had 1,545 Medicare Part D claims for 167 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.