NPPES file of Aug 9, 2026

Caroline Bittner, PHYSICIAN ASSISTANT

Physician Assistant · San Francisco, CA

Caroline Bittner, PHYSICIAN ASSISTANT is a physician assistant with a practice address in San Francisco, California, and NPI 1578076675, issued on Nov 10, 2017. Check the license (California PA55478, 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
1578076675
Name
Caroline Bittner
Credential
PHYSICIAN ASSISTANT
Primary taxonomy
Physician Assistant 363A00000X
License numbers
PA55478 CA
55478 CA
3466 TN
Self-reported in NPPES; status is on the state search
Practice location
2250 Hayes St Ste 208, San Francisco, CA 94117
Phone
(415) 259-4104
Enumerated
Nov 10, 2017
Record last updated
Jun 30, 2022
Fax
(408) 294-6595
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2250 Hayes St Ste 208

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

  1. Kenneth Akizuki, MDOrthopaedic Surgery Physician1073569703
  2. Sara Edwards, M.D.Orthopaedic Surgery Physician1669589214
  3. Alyssa Gee, PA-CSurgical Physician Assistant1508667106
  4. Evar Saelee, PA-CPhysician Assistant1770135022

Verify Caroline Bittner 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 PA55478
    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

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81% fewer Medicare Part D claims than the average physician assistant in 2024

157 Medicare Part D claims for 116 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 18 claims were for opioids.

  1. Caroline Bittner157
  2. Specialty average830

Most prescribed

  1. Cephalexin23 claims
  2. Ibuprofen18 claims
  3. Hydrocodone-Acetaminophen11 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.

  1. Qualityout of 100 · 30% of the final score76.7
  2. Costout of 100 · 30%97.1
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Caroline Bittner among 14,451 physician assistant records in California

Caroline Bittner, PHYSICIAN ASSISTANT 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 2017, is newer than 47% of them.

  • NPI issued2017 · 47% of these records are older, 48% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2022 · 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. Kyle Abraham, PA-CSan Francisco, CA 941171760723647
  2. Elizabeth Andrews, PA-CSan Francisco, CA 941171235535998
  3. Brandon Carr, PA-CSan Francisco, CA 941171033169073
  4. Aaron Franklin, P.T.San Francisco, CA 941171124318589
  5. Shannon Hirokane, PA-CSan Francisco, CA 941171649798422
  6. Phuong Nguyen, PASan Francisco, CA 941171891079059
  7. Jason Quicho, PA-CSan Francisco, CA 941171518312156
  8. Beverly Renick, FNP PA-CSan Francisco, CA 941171245218932

Common questions

What is Caroline Bittner, PHYSICIAN ASSISTANT's NPI number?

Caroline Bittner, PHYSICIAN ASSISTANT's National Provider Identifier (NPI) is 1578076675, issued on Nov 10, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Caroline Bittner, PHYSICIAN ASSISTANT located?

The NPPES record lists a practice address at 2250 Hayes St Ste 208, San Francisco, CA, 94117. Phone: (415) 259-4104. Providers update this record themselves, so call before visiting.

How can I verify Caroline Bittner, PHYSICIAN ASSISTANT's license?

NPPES lists California license number PA55478, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Caroline Bittner, PHYSICIAN ASSISTANT prescribe under Medicare Part D?

In 2024, Caroline Bittner, PHYSICIAN ASSISTANT had 157 Medicare Part D claims for 116 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Caroline Bittner, PHYSICIAN ASSISTANT'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.