Martin Joseph Waltsak, PA-C
Physician Assistant · Garden Grove, CA
Martin Joseph Waltsak, PA-C is a physician assistant with a practice address in Garden Grove, California, and NPI 1669409652, issued on Jun 27, 2006. Check the license (California PA14773, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Martin Joseph Waltsak
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA14773 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12942 Harbor Blvd, Garden Grove, CA 92840
- Phone
- (714) 705-2120
- Enumerated
- Jun 27, 2006
- Record last updated
- Mar 22, 2023
- Medicaid IDs
- PA14773 - WILMINGTON CA
PA14773 CA - Medicare enrollment
- Enrolled (PECOS I20061101000329); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 12942 Harbor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Malouf, M.D.Family Medicine Physician1578549234
- Hien Nguyen, DOFamily Medicine Physician1902335904
- Joseph Nguyen, D.O.Family Medicine Physician1710209622
- Parveen Vora, MDFamily Medicine Physician1215134689
Verify Martin Joseph Waltsak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA14773Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average physician assistant in 2024
2,083 Medicare Part D claims for 607 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 119 claims were for opioids.
Most prescribed
- Azithromycin81 claims
- Prednisone71 claims
- Amlodipine Besylate63 claims
- Tramadol Hcl58 claims
- Losartan Potassium57 claims
- Celecoxib55 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
- Providence Medical FoundationGarden Grove, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Martin Joseph Waltsak among 14,451 physician assistant records in California
Martin Joseph Waltsak, 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1998 · median 2018 among the 7,214 with a school on file
- Record last updated2023 · 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).
40 physician assistant records list a practice address in Garden Grove
They are 40 of the 4,572 NPPES records with a practice address in Garden Grove, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Garden Grove → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Robert CaoGarden Grove, CA 928401982162863
- Ponlork ChhornGarden Grove, CA 928401477488476
- Dena Fisher, P.A,Garden Grove, CA 928401821270273
- Pam Maurer, PAGarden Grove, CA 928401518902782
- Chau Nguyen, PA-CGarden Grove, CA 928401548504533
- Gia NguyenGarden Grove, CA 928401528741691
- Eileen Nguyen, PA-CGarden Grove, CA 928401780540633
- Bich Tram Do, PA-CGarden Grove, CA 928411154762359
Common questions
What is Martin Joseph Waltsak, PA-C's NPI number?
Martin Joseph Waltsak, PA-C's National Provider Identifier (NPI) is 1669409652, issued on Jun 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Martin Joseph Waltsak, PA-C located?
The NPPES record lists a practice address at 12942 Harbor Blvd, Garden Grove, CA, 92840. Phone: (714) 705-2120. Providers update this record themselves, so call before visiting.
How can I verify Martin Joseph Waltsak, PA-C's license?
NPPES lists California license number PA14773, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Martin Joseph Waltsak, PA-C prescribe under Medicare Part D?
In 2024, Martin Joseph Waltsak, PA-C had 2,083 Medicare Part D claims for 607 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.