Graciela Lia Imbastari, MD
Internal Medicine Physician · Orange, CA
Graciela Lia Imbastari, MD is an internal medicine physician with a practice address in Orange, California, and NPI 1801809983, issued on Aug 13, 2006. Check the license (California A46536, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Graciela Lia Imbastari
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A46536 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2617 E Chapman Ave, Orange, CA 92869
- Phone
- (714) 538-6822
- Enumerated
- Aug 13, 2006
- Record last updated
- Oct 25, 2022
- Fax
- (714) 280-4826
- Medicare enrollment
- Enrolled (PECOS I20100505000675); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2617 E Chapman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alex Dariushnia, M.D.Family Medicine Physician1336243385
- Semira Dariushnia, M.D.Family Medicine Physician1184725053
- Jeffrey Dembner, MDNeurological Surgery Physician1356423271
- Daniel Dobalian, M.D.Obstetrics & Gynecology Physician1578743894
- Danielle Garcia, PSY DPsychologist1326273350
- Linda Haase, FNPFamily Medicine Physician1699867242
Verify Graciela Lia Imbastari in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A46536Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,655 Medicare Part D claims for 425 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 183 claims were for opioids.
Most prescribed
- Atorvastatin Calcium452 claims
- Levothyroxine Sodium389 claims
- Amlodipine Besylate239 claims
- Metoprolol Succinate237 claims
- Valsartan177 claims
- Zolpidem Tartrate149 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.
Industry payments in 2024: $1,333.66
58 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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.
Bills Medicare through one group practice
- Astra Medical GroupOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Graciela Lia Imbastari among 17,696 internal medicine physician records in California
Graciela Lia Imbastari, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2004 among the 11,065 with a school on file
- 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).
187 internal medicine physician records list a practice address in Orange
They are 187 of the 13,245 NPPES records with a practice address in Orange, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Orange → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aladean Abdrabbo, M.D.Orange, CA 928691578905675
- Saif Al Yaseen, M.D.Orange, CA 928691356684096
- Jay Amin, MDOrange, CA 928691568564193
- Laura Cho, M.D.Orange, CA 928691982790820
- Kathleen Glaspy, M.D.Orange, CA 928691134311186
- John Godes, MDOrange, CA 928691730330572
- Yio-Fan Hsu, M.D.Orange, CA 928691588989529
- Hassan Jadid, M.D.Orange, CA 928691104171925
Common questions
What is Graciela Lia Imbastari, MD's NPI number?
Graciela Lia Imbastari, MD's National Provider Identifier (NPI) is 1801809983, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Graciela Lia Imbastari, MD located?
The NPPES record lists a practice address at 2617 E Chapman Ave, Orange, CA, 92869. Phone: (714) 538-6822. Providers update this record themselves, so call before visiting.
How can I verify Graciela Lia Imbastari, MD's license?
NPPES lists California license number A46536, 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 Graciela Lia Imbastari, MD prescribe under Medicare Part D?
In 2024, Graciela Lia Imbastari, MD had 7,655 Medicare Part D claims for 425 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.