NPPES file of Aug 9, 2026

Melissa Juncker, PA

Physician Assistant · San Francisco, CA

Melissa Juncker, PA is a physician assistant with a practice address in San Francisco, California, and NPI 1275534562, issued on Aug 9, 2005. Check the license (California PA18024, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275534562
Name
Melissa Juncker
Credential
PA
Primary taxonomy
Physician Assistant 363A00000X
License number
PA18024 CA
Self-reported in NPPES; status is on the state search
Practice location
1600 Market St, San Francisco, CA 94102
Phone
(415) 746-1812
Enumerated
Aug 9, 2005
Record last updated
Aug 23, 2023
Fax
(415) 829-2326
Medicare enrollment
Enrolled (PECOS I20061212000392); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1600 Market St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brad Bertrand, FNPFamily Nurse Practitioner1063842920
  2. Kacie Cooke, PAPhysician Assistant1487949707
  3. Inderjeet KaurFamily Nurse Practitioner1275243255
  4. Maxx Kumiski, PAPhysician Assistant1952800203

Verify Melissa Juncker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA18024
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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73% fewer Medicare Part D claims than the average physician assistant in 2024

225 Medicare Part D claims for 188 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.

  1. Melissa Juncker225
  2. Specialty average830

Most prescribed

  1. Paxlovid37 claims
  2. Nitrofurantoin Mono-Macro23 claims
  3. Cephalexin21 claims
  4. Amoxicillin-Clavulanate Potass17 claims
  5. Prednisone14 claims
  6. Albuterol Sulfate Hfa12 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 MIPS final score for 2023 (Medicare payment program): 96.5 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score80.3
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Ucsf Health Medical FoundationSan Bruno, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Melissa Juncker among 14,451 physician assistant records in California

Melissa Juncker, PA 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 99% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2002 · 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).

Physician Assistant providers in California

There are 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Kelly Arditi, PA-CSan Francisco, CA 941021508041583
  2. Morgan CavanaughSan Francisco, CA 941021932960986
  3. Kathy ChenSan Francisco, CA 941021871255927
  4. Kacie Cooke, PASan Francisco, CA 941021487949707
  5. Michele Etzbach, PA-CSan Francisco, CA 941021588471460
  6. Charis Fasoldt, PASan Francisco, CA 941021447943667
  7. James Franicevich, NPSan Francisco, CA 941021205953676
  8. Melissa Heyer, PA-CSan Francisco, CA 941021043555170

Common questions

What is Melissa Juncker, PA's NPI number?

Melissa Juncker, PA's National Provider Identifier (NPI) is 1275534562, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Melissa Juncker, PA located?

The NPPES record lists a practice address at 1600 Market St, San Francisco, CA, 94102. Phone: (415) 746-1812. Providers update this record themselves, so call before visiting.

How can I verify Melissa Juncker, PA's license?

NPPES lists California license number PA18024, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Melissa Juncker, PA prescribe under Medicare Part D?

In 2024, Melissa Juncker, PA had 225 Medicare Part D claims for 188 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Melissa Juncker, PA's MIPS final score?

The 2023 MIPS final score is 96.5 of 100. 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.