NPPES file of Aug 9, 2026

Leigh Ann Ballou, PA-C

Surgical Physician Assistant · Loma Linda, CA

Leigh Ann Ballou, PA-C is a surgical physician assistant with a practice address in Loma Linda, California, and NPI 1891794657, issued on Jul 14, 2005. Check the license (California PA16765, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1891794657
Name
Leigh Ann Ballou
Credential
PA-C
Primary taxonomy
Surgical Physician Assistant 363AS0400X
License number
PA16765 CA
Self-reported in NPPES; status is on the state search
Practice location
11234 Anderson St, Loma Linda, CA 92354
Phone
(909) 558-6386
Enumerated
Jul 14, 2005
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20120521000684); accepts Medicare assignment
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 11234 Anderson St

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

  1. Carolyn AbbasiAnesthesiology Physician1811287311
  2. Marian Abdelmalek, DOInternal Medicine Physician1285218024
  3. Faiz Abdur-Rahman, MDStudent in an Organized Health Care Education/Training Program1144073768
  4. Marc Abou AssaliStudent in an Organized Health Care Education/Training Program1689317265
  5. Adina Achiriloaie, MDDiagnostic Neuroimaging (Radiology) Physician1992983282
  6. Ana Acosta, MDStudent in an Organized Health Care Education/Training Program1265179774

Verify Leigh Ann Ballou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA16765
    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
Find 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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74% fewer Medicare Part D claims than the average surgical physician assistant in 2024

79 Medicare Part D claims for 42 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 13 claims were for opioids.

  1. Leigh Ballou79
  2. Specialty average304

Most prescribed

  1. Gabapentin15 claims
  2. Clopidogrel12 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.

Bills Medicare through one group practice

  1. Regents OF The University OF CaliforniaOrange, CA

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

Leigh Ann Ballou among 1,075 surgical physician assistant records in California

Leigh Ann Ballou, PA-C is one of 1,075 surgical physician assistant 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 98% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2002 · median 2012 among the 649 with a school on file
  • Record last updated2007 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Physician Assistant providers in California

There are 1,075 surgical physician assistant records in California.

The 8 surgical physician assistant records with the nearest ZIP codes

  1. Andrea RidaLoma Linda, CA 923541629541354
  2. Jason Roddick, PA-CLoma Linda, CA 923541164509899
  3. O. Shattuck, P.A.Loma Linda, CA 923541568569598
  4. Andrew FelixLoma Linda, CA 923501851179154
  5. Mark Grove, PA-CLoma Linda, CA 923501679306153
  6. Peter Peng, PA-CLoma Linda, CA 923501497421747
  7. Gerardo Arreguin, P.ARedlands, CA 923731033413455
  8. Andre Blake, P.A.Redlands, CA 923731588655682

Common questions

What is Leigh Ann Ballou, PA-C's NPI number?

Leigh Ann Ballou, PA-C's National Provider Identifier (NPI) is 1891794657, issued on Jul 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Leigh Ann Ballou, PA-C located?

The NPPES record lists a practice address at 11234 Anderson St, Loma Linda, CA, 92354. Phone: (909) 558-6386. Providers update this record themselves, so call before visiting.

How can I verify Leigh Ann Ballou, PA-C's license?

NPPES lists California license number PA16765, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Leigh Ann Ballou, PA-C prescribe under Medicare Part D?

In 2024, Leigh Ann Ballou, PA-C had 79 Medicare Part D claims for 42 beneficiaries; the average among surgical physician assistant prescribers was 304. 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.