Kimberly M. Opitz, MPA, PA-C
Physician Assistant · Napa, CA
Kimberly M. Opitz, MPA, PA-C is a physician assistant with a practice address in Napa, California, and NPI 1376875872, issued on Feb 8, 2010. Check the license (California PA20736, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kimberly M. Opitz
- Credential
- MPA, PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA20736 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3273 Claremont Way, Napa, CA 94558
- Phone
- (707) 254-7117
- Enumerated
- Feb 8, 2010
- Record last updated
- Nov 11, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (707) 265-6435
- Medicaid ID
- GR0102820 CA
- Medicare enrollment
- Enrolled (PECOS I20101113000018); 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 3273 Claremont Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kimberly M. Opitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA20736Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average physician assistant in 2024
447 Medicare Part D claims for 170 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 232 claims were for opioids.
Most prescribed
- Oxycodone Hcl125 claims
- Tramadol Hcl91 claims
- Celecoxib90 claims
- Ondansetron Odt32 claims
- Diclofenac Sodium28 claims
- Doxycycline Hyclate23 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): 99.2 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
- Napa Valley Orthopaedic Medical Group IncNapa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kimberly M. Opitz among 14,451 physician assistant records in California
Kimberly M. Opitz, MPA, 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 2010, is newer than 27% of them.
- NPI issued2010 · 27% of these records are older, 70% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2009 · 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).
Physician Assistant providers in California
There are 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Napa → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Mia Alarcon, P.A.- CNapa, CA 945581184857542
- Kaelyn Caspillo, PA-CNapa, CA 945581023672763
- Jose Coronado, PANapa, CA 945581598701310
- Michelle Del Rosario, PA-CNapa, CA 945581447516026
- Kate Donnelly, PA-CNapa, CA 945581760502603
- Megan Ford, PANapa, CA 945581609281252
- Lulu Garcia, PACNapa, CA 945581730467051
- Kristine Himmerick, PANapa, CA 945581073514840
Common questions
What is Kimberly M. Opitz, MPA, PA-C's NPI number?
Kimberly M. Opitz, MPA, PA-C's National Provider Identifier (NPI) is 1376875872, issued on Feb 8, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Kimberly M. Opitz, MPA, PA-C located?
The NPPES record lists a practice address at 3273 Claremont Way, Napa, CA, 94558. Phone: (707) 254-7117. Providers update this record themselves, so call before visiting.
How can I verify Kimberly M. Opitz, MPA, PA-C's license?
NPPES lists California license number PA20736, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kimberly M. Opitz, MPA, PA-C prescribe under Medicare Part D?
In 2024, Kimberly M. Opitz, MPA, PA-C had 447 Medicare Part D claims for 170 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Kimberly M. Opitz, MPA, PA-C's MIPS final score?
The 2023 MIPS final score is 99.2 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.