NPPES file of Aug 9, 2026

Louise N. Bacon, M.D.

Surgery Physician · Mission Viejo, CA

Louise N. Bacon, M.D. is a surgery physician with a practice address in Mission Viejo, California, and NPI 1063732428, issued on Jun 9, 2010. Check the license (California 135799, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063732428
Name
Louise N. Bacon
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License number
135799 CA
Self-reported in NPPES; status is on the state search
Practice location
26732 Crown Valley Pkwy Ste 440, Mission Viejo, CA 92691
Phone
(949) 364-1007
Enumerated
Jun 9, 2010
Record last updated
Feb 9, 2026
Fax
(949) 364-0317
Medicare enrollment
Enrolled (PECOS I20150702000170); accepts Medicare assignment
Medical or professional school
Meharry Medical College School Of Medicine, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 26732 Crown Valley Pkwy Ste 440

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Moskaitis, PA-CSurgical Physician Assistant1912230046

Verify Louise N. Bacon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 135799
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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69% fewer Medicare Part D claims than the average surgery physician in 2024

45 Medicare Part D claims for 25 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Louise Bacon45
  2. Specialty average147

Most prescribed

  1. Ondansetron Odt12 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 86.1 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score80.8
  2. Costout of 100 · 30%64.1
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $500.06

12 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Louise Bacon$500.06
  2. Specialty average$3,513.80

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

  1. South Orange County Surgical Medical Group IncLaguna Hills, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Louise N. Bacon among 3,118 surgery physician records in California

Louise N. Bacon, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 67% of them.

  • NPI issued2010 · 67% of these records are older, 30% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2010 · median 2003 among the 1,901 with a school on file
  • Record last updated2026 · 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 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

The 8 surgery physician records with the nearest ZIP codes

  1. Marla Anderson, MDMission Viejo, CA 926911528130333
  2. Matthew BradyMission Viejo, CA 926911376863621
  3. Ashton Christian, MDMission Viejo, CA 926911699207704
  4. Kenneth Kushner, M.D.Mission Viejo, CA 926911518967702
  5. Anne Luhan, M.D., F.A.C.S.Mission Viejo, CA 926911093985731
  6. Ralph Maeda, M.D.Mission Viejo, CA 926911902806136
  7. Carl Schwab, M.D.Mission Viejo, CA 926911497968804
  8. John Shaver, M.D.Mission Viejo, CA 926911598765729

Common questions

What is Louise N. Bacon, M.D.'s NPI number?

Louise N. Bacon, M.D.'s National Provider Identifier (NPI) is 1063732428, issued on Jun 9, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Louise N. Bacon, M.D. located?

The NPPES record lists a practice address at 26732 Crown Valley Pkwy Ste 440, Mission Viejo, CA, 92691. Phone: (949) 364-1007. Providers update this record themselves, so call before visiting.

How can I verify Louise N. Bacon, M.D.'s license?

NPPES lists California license number 135799, 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 Louise N. Bacon, M.D. prescribe under Medicare Part D?

In 2024, Louise N. Bacon, M.D. had 45 Medicare Part D claims for 25 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

What is Louise N. Bacon, M.D.'s MIPS final score?

The 2023 MIPS final score is 86.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.