Heather Lyn Gerstl, PA-C
Physician Assistant · Lancaster, CA
Heather Lyn Gerstl, PA-C is a physician assistant with a practice address in Lancaster, California, and NPI 1558591701, issued on Jul 22, 2009. Check the license (California 20971, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Heather Lyn Gerstl
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 20971 CA
Self-reported in NPPES; status is on the state search - Practice location
- 43112 15TH St W, Lancaster, CA 93534
- Phone
- (877) 544-4404
- Enumerated
- Jul 22, 2009
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (661) 538-9483
- Medicare enrollment
- Enrolled (PECOS I20100714000073); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 43112 15TH St W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Heather Lyn Gerstl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 20971Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average physician assistant in 2024
755 Medicare Part D claims for 414 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 88 claims were for opioids.
Most prescribed
- Prednisone72 claims
- Ipratropium Bromide50 claims
- Cephalexin43 claims
- Albuterol Sulfate Hfa40 claims
- Tramadol Hcl-Acetaminophen38 claims
- Doxycycline Monohydrate28 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
- Southern California Permanente Medical GroupPanorama City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Heather Lyn Gerstl among 14,451 physician assistant records in California
Heather Lyn Gerstl, PA-C is one of 14,451 physician assistant 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 2009, is newer than 25% of them.
- NPI issued2009 · 25% of these records are older, 73% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2010 · median 2018 among the 7,214 with a school on file
- Record last updated2021 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physician Assistant providers in California
There are 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Lancaster → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Willie Anderson, PA-CLancaster, CA 935341497864268
- Shannon Chavez, PACLancaster, CA 935341952576191
- Carol Grant-Dougherty, P.A.Lancaster, CA 935341114037579
- Richard Krajewski, P.A.-CLancaster, CA 935341215049002
- Annmarie Moreno, PA-C MSPALancaster, CA 935341215124854
- Donald Pierre, PALancaster, CA 935341457578924
- Daniel Rajaratnam, PA-CLancaster, CA 935341669650180
- Lori Rodriguez, PALancaster, CA 935341902880032
Common questions
What is Heather Lyn Gerstl, PA-C's NPI number?
Heather Lyn Gerstl, PA-C's National Provider Identifier (NPI) is 1558591701, issued on Jul 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Heather Lyn Gerstl, PA-C located?
The NPPES record lists a practice address at 43112 15TH St W, Lancaster, CA, 93534. Phone: (877) 544-4404. Providers update this record themselves, so call before visiting.
How can I verify Heather Lyn Gerstl, PA-C's license?
NPPES lists California license number 20971, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Heather Lyn Gerstl, PA-C prescribe under Medicare Part D?
In 2024, Heather Lyn Gerstl, PA-C had 755 Medicare Part D claims for 414 beneficiaries; the average among physician assistant prescribers was 830. 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.