Regina Lynn Petersen, PA-C
Medical Physician Assistant · Encinitas, CA
Regina Lynn Petersen, PA-C is a medical physician assistant with a practice address in Encinitas, California, and NPI 1770721714, issued on Jan 29, 2009. Check the license (California PA16911, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Regina Lynn Petersen
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA16911 CA
Self-reported in NPPES; status is on the state search - Practice location
- 477 N EL Camino Real, Encinitas, CA 92024
- Phone
- (800) 727-4777
- Enumerated
- Jan 29, 2009
- Record last updated
- Nov 24, 2025
- Medicare enrollment
- Enrolled (PECOS I20050606000453); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 477 N EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angel Bair, NPNurse Practitioner1235218389
- Elizabeth Bartolomeo, ANPAdult Health Nurse Practitioner1952532095
- Donna Beck, PHDMarriage & Family Therapist1780015362
- Robert Brunst, MD PHDFamily Medicine Physician1639257546
- Jennifer Cates, PA-CMedical Physician Assistant1972622751
- Mary Ann Cathey, FNPFamily Nurse Practitioner1013995604
Verify Regina Lynn Petersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA16911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average medical physician assistant in 2024
22 Medicare Part D claims for 18 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
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
- Scripps HealthEncinitas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Regina Lynn Petersen among 3,376 medical physician assistant records in California
Regina Lynn Petersen, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 38% of them.
- NPI issued2009 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2003 · median 2012 among the 1,347 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Encinitas → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Maria ArgoudEncinitas, CA 920241598081820
- Jessica Brower, PAEncinitas, CA 920241861725392
- Amanda BurrellEncinitas, CA 920241548884398
- Jennifer Cates, PA-CEncinitas, CA 920241972622751
- Michael Davis, PA-CEncinitas, CA 920241922115229
- Amy Dusenberry, P.A.Encinitas, CA 920241972696813
- Lauren Edwards, PA-CEncinitas, CA 920241023382074
- Erica Ewing, PA-CEncinitas, CA 920241285311712
Common questions
What is Regina Lynn Petersen, PA-C's NPI number?
Regina Lynn Petersen, PA-C's National Provider Identifier (NPI) is 1770721714, issued on Jan 29, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Regina Lynn Petersen, PA-C located?
The NPPES record lists a practice address at 477 N EL Camino Real, Encinitas, CA, 92024. Phone: (800) 727-4777. Providers update this record themselves, so call before visiting.
How can I verify Regina Lynn Petersen, PA-C's license?
NPPES lists California license number PA16911, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Regina Lynn Petersen, PA-C prescribe under Medicare Part D?
In 2024, Regina Lynn Petersen, PA-C had 22 Medicare Part D claims for 18 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.