Joanna Kopacz, MD
Infectious Disease Physician · Laguna Hills, CA
Joanna Kopacz, MD is an infectious disease physician with a practice address in Laguna Hills, California, and NPI 1275792368, issued on Jun 4, 2008. Check the license (California A128174, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joanna Kopacz
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- A128174 CA
262583 NY
Self-reported in NPPES; status is on the state search - Practice location
- 24411 Health Center Dr Ste 560, Laguna Hills, CA 92653
- Phone
- (949) 218-7251
- Enumerated
- Jun 4, 2008
- Record last updated
- Feb 28, 2024
- Medicare enrollment
- Enrolled (PECOS I20140723001428); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 24411 Health Center Dr Ste 560
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vidal Espeleta, M.D.Pulmonary Disease Physician1245327808
- Bryan Vo, M.D.Pulmonary Disease Physician1851576060
Verify Joanna Kopacz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A128174Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average infectious disease physician in 2024
789 Medicare Part D claims for 178 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Ceftriaxone117 claims
- Meropenem79 claims
- Ertapenem67 claims
- Minocycline Hcl43 claims
- Vancomycin Hcl38 claims
- Cefazolin Sodium27 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: $16.81
1 payment: food and beverage; the largest payer was Insmed, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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.
Joanna Kopacz among 1,119 infectious disease physician records in California
Joanna Kopacz, MD is one of 1,119 infectious disease 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 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2004 · median 2003 among the 735 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Laguna Hills → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Alan White, MDLaguna Hills, CA 926531548229701
- Kamran Hamidi, MDLaguna Beach, CA 926511326038605
- Jagadeesh Reddy, M.D.Laguna Beach, CA 926511083610703
- Charles Bailey, M.D.Aliso Viejo, CA 926561245273119
- Katherine Malkasian, M.D.Newport Beach, CA 926601336192327
- Jeanne Spudick, D.O.Newport Beach, CA 926601902824816
- Susan Allen, MDNewport Beach, CA 926631841276805
- Bonnie Bock, MDNewport Beach, CA 926631225226558
Common questions
What is Joanna Kopacz, MD's NPI number?
Joanna Kopacz, MD's National Provider Identifier (NPI) is 1275792368, issued on Jun 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Kopacz, MD located?
The NPPES record lists a practice address at 24411 Health Center Dr Ste 560, Laguna Hills, CA, 92653. Phone: (949) 218-7251. Providers update this record themselves, so call before visiting.
How can I verify Joanna Kopacz, MD's license?
NPPES lists California license number A128174, 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 Joanna Kopacz, MD prescribe under Medicare Part D?
In 2024, Joanna Kopacz, MD had 789 Medicare Part D claims for 178 beneficiaries; the average among infectious disease physician prescribers was 689. 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.