NPPES file of Aug 9, 2026

Alyssa Ellen Guerrero, PA-C

Medical Physician Assistant · Philadelphia, PA

Alyssa Ellen Guerrero, PA-C is a medical physician assistant with a practice address in Philadelphia, Pennsylvania, and NPI 1609315084, issued on Feb 17, 2017. Check the license (Pennsylvania MA058898, as entered in NPPES) with the Pennsylvania 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
1609315084
Name
Alyssa Ellen Guerrero
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
MA058898 PA
Self-reported in NPPES; status is on the state search
Practice location
230 W Washington SQ, Philadelphia, PA 19106
Phone
(215) 829-3668
Enumerated
Feb 17, 2017
Record last updated
Dec 20, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20171129002001); 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 230 W Washington SQ

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

  1. Taylor Apostolico, MS GCGenetic Counselor (M.S.)1841711355
  2. Kimberly Backstrom, DPTPhysical Therapist1386603959
  3. Douglas Beach, MDHematology & Oncology Physician1457598930
  4. Mark Berger, M.D.Cardiovascular Disease Physician1962491449
  5. Arielle Bivas, NPAdult Health Nurse Practitioner1841607314
  6. Bryan Blanchard, CRNPAcute Care Nurse Practitioner1003859018

Verify Alyssa Ellen Guerrero in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license MA058898
    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 Pennsylvania 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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89% fewer Medicare Part D claims than the average medical physician assistant in 2024

132 Medicare Part D claims for 66 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Alyssa Guerrero132
  2. Specialty average1,148

Most prescribed

  1. Doxycycline Hyclate36 claims
  2. Gabapentin16 claims
  3. Sulfamethoxazole-Trimethoprim12 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): 85.5 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 score73.6
  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, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 3 group practices

  1. Clinical Health Care Associates OF New Jersey PCCherry Hill, NJ
  2. Novacare Outpatient Rehabilitation East, Inc.Collegeville, PA
  3. University OF Penn - Medical GroupPhiladelphia, PA

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

Alyssa Ellen Guerrero among 3,897 medical physician assistant records in Pennsylvania

Alyssa Ellen Guerrero, PA-C is one of 3,897 medical physician assistant records with a practice address in Pennsylvania. 80% 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 64% of them.

  • NPI issued2017 · 64% of these records are older, 32% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2016 · median 2015 among the 2,467 with a school on file
  • Record last updated2019 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in Pennsylvania

There are 3,897 medical physician assistant records in Pennsylvania.

The 8 medical physician assistant records with the nearest ZIP codes

  1. John Delrossi, PA-CPhiladelphia, PA 191061497970453
  2. Diti DesaiPhiladelphia, PA 191061871966846
  3. Kathryn Doshi, PA-CPhiladelphia, PA 191061245580067
  4. Michael Fejka, PA-CPhiladelphia, PA 191061134203037
  5. Christina Gehman, PA-CPhiladelphia, PA 191061497099766
  6. Sherri Hansell, PA-CPhiladelphia, PA 191061720339419
  7. Janel Jesberger, PA-CPhiladelphia, PA 191061760928204
  8. Jenean Lane, PA-CPhiladelphia, PA 191061942225149

Common questions

What is Alyssa Ellen Guerrero, PA-C's NPI number?

Alyssa Ellen Guerrero, PA-C's National Provider Identifier (NPI) is 1609315084, issued on Feb 17, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Alyssa Ellen Guerrero, PA-C located?

The NPPES record lists a practice address at 230 W Washington SQ, Philadelphia, PA, 19106. Phone: (215) 829-3668. Providers update this record themselves, so call before visiting.

How can I verify Alyssa Ellen Guerrero, PA-C's license?

NPPES lists Pennsylvania license number MA058898, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

How much does Alyssa Ellen Guerrero, PA-C prescribe under Medicare Part D?

In 2024, Alyssa Ellen Guerrero, PA-C had 132 Medicare Part D claims for 66 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.

What is Alyssa Ellen Guerrero, PA-C's MIPS final score?

The 2023 MIPS final score is 85.5 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.