NPPES file of Aug 9, 2026

Alissa L. Larson, PA-C

Physician Assistant · Rochester, NY

Alissa L. Larson, PA-C is a physician assistant with a practice address in Rochester, New York, and NPI 1457872509, issued on Jun 29, 2017. Check the license (New York 031183, as entered in NPPES) with the New York 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
1457872509
Name
Alissa L. Larson
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License numbers
031183 NY
12475 MN
Self-reported in NPPES; status is on the state search
Practice location
1300 Jefferson RD Suite 100, Rochester, NY 14642
Phone
(585) 413-1800
Enumerated
Jun 29, 2017
Record last updated
Jan 26, 2024
Medicare enrollment
Enrolled (PECOS I20240131000970); accepts Medicare assignment
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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Verify Alissa L. Larson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 031183
    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 New York license search

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55% fewer Medicare Part D claims than the average physician assistant in 2024

377 Medicare Part D claims for 277 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.

  1. Alissa Larson377
  2. Specialty average830

Most prescribed

  1. Prednisone52 claims
  2. Cephalexin48 claims
  3. Amoxicillin-Clavulanate Potass28 claims
  4. Doxycycline Hyclate27 claims
  5. Albuterol Sulfate Hfa26 claims
  6. Sulfamethoxazole-Trimethoprim20 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): 83.5 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 score81.8
  2. Costout of 100 · 30%63.3
  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, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. University OF RochesterRochester, NY
  2. University OF Rochester Urgent CarePenfield, NY

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

Alissa L. Larson among 15,555 physician assistant records in New York

Alissa L. Larson, PA-C is one of 15,555 physician assistant records with a practice address in New York. 74% 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, 49% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 52% of these records are
  • Graduated2017 · median 2018 among the 8,158 with a school on file
  • Record last updated2024 · 48% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

630 physician assistant records list a practice address in Rochester

They are 630 of the 20,520 NPPES records with a practice address in Rochester, and 15,555 physician assistant records in New York.

The 8 physician assistant records with the nearest ZIP codes

  1. Mary Andolsek, NPRochester, NY 146421235166232
  2. Britta Baughman, RPA-C, MPASRochester, NY 146421598791329
  3. Timothy Chilelli, P.A.Rochester, NY 146421356369557
  4. Stephen D'Ambrosio, MPAS, PA-CRochester, NY 146421245260835
  5. Kimberly Fitch, RPA-CRochester, NY 146421063458347
  6. Christopher George, RPA-CRochester, NY 146421386670255
  7. Kim Ingraham, RPA-CRochester, NY 146421245267368
  8. Claire Lynch, RPA-CRochester, NY 146421780602029

Common questions

What is Alissa L. Larson, PA-C's NPI number?

Alissa L. Larson, PA-C's National Provider Identifier (NPI) is 1457872509, issued on Jun 29, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Alissa L. Larson, PA-C located?

The NPPES record lists a practice address at 1300 Jefferson RD Suite 100, Rochester, NY, 14642. Phone: (585) 413-1800. Providers update this record themselves, so call before visiting.

How can I verify Alissa L. Larson, PA-C's license?

NPPES lists New York license number 031183, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

How much does Alissa L. Larson, PA-C prescribe under Medicare Part D?

In 2024, Alissa L. Larson, PA-C had 377 Medicare Part D claims for 277 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Alissa L. Larson, PA-C's MIPS final score?

The 2023 MIPS final score is 83.5 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.