Tammy Witschger, PA-C
Physician Assistant · Santa Cruz, CA
Tammy Witschger, PA-C is a physician assistant with a practice address in Santa Cruz, California, and NPI 1376734053, issued on Aug 7, 2007. Check the license (California PA19304, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tammy Witschger
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA19304 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1555 Soquel Dr, Santa Cruz, CA 95065
- Phone
- (831) 464-1776
- Enumerated
- Aug 7, 2007
- Record last updated
- Mar 11, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20071129000710); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1555 Soquel Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paul Angelo, RNFamily Nurse Practitioner1750268793
- Francisco Arrieta, MDFamily Medicine Physician1861232498
- Vivian Banh, DOAnesthesiology Physician1992332662
- James Bergum, CCPPerfusionist1073148235
- Upasna Bhuria, MDAnesthesiology Physician1700020575
- Daniel BishopStudent in an Organized Health Care Education/Training Program1407507304
Verify Tammy Witschger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA19304Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average physician assistant in 2024
247 Medicare Part D claims for 171 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 27 claims were for opioids.
Most prescribed
- Cephalexin27 claims
- Ondansetron Odt21 claims
- Nitrofurantoin Mono-Macro17 claims
- Tramadol Hcl17 claims
- Amoxicillin-Clavulanate Potass16 claims
- Ibuprofen14 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): 94.6 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Dignity Health Medical FoundationSanta Cruz, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tammy Witschger among 14,451 physician assistant records in California
Tammy Witschger, 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 2007, is newer than 13% of them.
- NPI issued2007 · 13% of these records are older, 78% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2007 · median 2018 among the 7,214 with a school on file
- Record last updated2010 · 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).
94 physician assistant records list a practice address in Santa Cruz
They are 94 of the 5,138 NPPES records with a practice address in Santa Cruz, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Santa Cruz → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Acelina AlvarezSanta Cruz, CA 950651992775431
- Mark Buraczynski, PA-CSanta Cruz, CA 950651336277441
- Charles GrenierSanta Cruz, CA 950651932179868
- David Keenan, PA-CSanta Cruz, CA 950651225167208
- Sharon Kluger, PA-CSanta Cruz, CA 950651063581668
- Daniel Manion, PASanta Cruz, CA 950651821145749
- Brian Martin, PACSanta Cruz, CA 950651639182843
- Scott Merlo, PASanta Cruz, CA 950651952479644
Common questions
What is Tammy Witschger, PA-C's NPI number?
Tammy Witschger, PA-C's National Provider Identifier (NPI) is 1376734053, issued on Aug 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tammy Witschger, PA-C located?
The NPPES record lists a practice address at 1555 Soquel Dr, Santa Cruz, CA, 95065. Phone: (831) 464-1776. Providers update this record themselves, so call before visiting.
How can I verify Tammy Witschger, PA-C's license?
NPPES lists California license number PA19304, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Tammy Witschger, PA-C prescribe under Medicare Part D?
In 2024, Tammy Witschger, PA-C had 247 Medicare Part D claims for 171 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Tammy Witschger, PA-C's MIPS final score?
The 2023 MIPS final score is 94.6 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.