Robin Arash Hatam, D.O.
Internal Medicine Physician · Santa Ana, CA
Robin Arash Hatam, D.O. is an internal medicine physician with a practice address in Santa Ana, California, and NPI 1194053785, issued on Nov 20, 2009. Check the license (California 20A11018, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robin Arash Hatam
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A11018 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3501 S Harbor Blvd, Santa Ana, CA 92704
- Phone
- (714) 929-2300
- Enumerated
- Nov 20, 2009
- Record last updated
- Dec 26, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3501 S Harbor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronnie Alas, M.D.Internal Medicine Physician1306267026
- Joel Arter, MDFamily Medicine Physician1942512744
- Eileen May Barraza, N.P.Nurse Practitioner1487105243
- Rama Bathala-Patel, MDFamily Medicine Physician1992853774
- Charles Egesdal, M.D.Pediatrics Physician1861925471
- Emad Hashemi, M.D.Obstetrics & Gynecology Physician1568492759
Verify Robin Arash Hatam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11018Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $214.71
1 payment: food and beverage; the largest payer was Penumbra, Inc. 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.
Robin Arash Hatam among 17,696 internal medicine physician records in California
Robin Arash Hatam, D.O. 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Ana → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ronnie Alas, M.D.Santa Ana, CA 927041306267026
- Robert Castro, DOSanta Ana, CA 927041285777813
- Iyad Houshan, M.D.Santa Ana, CA 927041497773287
- Wesam Houshan, MDSanta Ana, CA 927041356467112
- Ajay Meka, M.D.Santa Ana, CA 927041063527976
- Meena Meka, M.D.Santa Ana, CA 927041013338722
- Madhavi Mulye, M.D.Santa Ana, CA 927041205056470
- Hima Natla, M.D.Santa Ana, CA 927041730366139
Common questions
What is Robin Arash Hatam, D.O.'s NPI number?
Robin Arash Hatam, D.O.'s National Provider Identifier (NPI) is 1194053785, issued on Nov 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Robin Arash Hatam, D.O. located?
The NPPES record lists a practice address at 3501 S Harbor Blvd, Santa Ana, CA, 92704. Phone: (714) 929-2300. Providers update this record themselves, so call before visiting.
How can I verify Robin Arash Hatam, D.O.'s license?
NPPES lists California license number 20A11018, 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.
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.