Ariel Lopez-Chavez, M.D., M.S.
Medical Oncology Physician · Pittsburgh, PA
Ariel Lopez-Chavez, M.D., M.S. is a medical oncology physician with a practice address in Pittsburgh, Pennsylvania, and NPI 1871786913, issued on Aug 22, 2007. Check the license (Pennsylvania MD435376, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Ariel Lopez-Chavez
- Credential
- M.D., M.S.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- MD435376 PA
Self-reported in NPPES; status is on the state search - Practice location
- 314 E North Ave, Pittsburgh, PA 15212
- Phone
- (412) 325-5700
- Enumerated
- Aug 22, 2007
- Record last updated
- Jul 27, 2023
- Medicare enrollment
- Enrolled (PECOS I20230810000068); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 265 in Pennsylvania → Look up another NPI →
Also registered at 314 E North Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sushil Beriwal, MDRadiation Oncology Physician1538139134
- Antonios Christou, M.D.Medical Oncology Physician1922044098
- Timothy Dougherty, MDRadiation Oncology Physician1205498102
- Larisa Greenberg, MDMedical Oncology Physician1144220385
- Rachel Harken, RDRegistered Dietitian1619101607
- Alexander HelfandHematology & Oncology Physician1639525850
Verify Ariel Lopez-Chavez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD435376Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average medical oncology physician in 2024
92 Medicare Part D claims for 34 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Prochlorperazine Maleate25 claims
- Dexamethasone14 claims
- Tagrisso11 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): 85.6 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,512.09
3 payments; by number, the most common kind was education; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 3,343 providers of this specialty with any payment received $11,773.47 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Allegheny Clinic Medical OncologyPittsburgh, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ariel Lopez-Chavez among 265 medical oncology physician records in Pennsylvania
Ariel Lopez-Chavez, M.D., M.S. is one of 265 medical oncology physician records with a practice address in Pennsylvania. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2005 · median 2002 among the 189 with a school on file
- Record last updated2023 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Pennsylvania
There are 265 medical oncology physician records in Pennsylvania.
All 265 in Pennsylvania → Every provider in Pittsburgh → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Antonios Christou, M.D.Pittsburgh, PA 152121922044098
- Larisa Greenberg, MDPittsburgh, PA 152121144220385
- Dulabh Monga, MDPittsburgh, PA 152121578564019
- Naga Sai Krishna Patibandla, M.D.Pittsburgh, PA 152121861948069
- Jane Raymond, MDPittsburgh, PA 152121518968825
- Nancy Davidson, M.D.Pittsburgh, PA 152131114954153
- Shannon Huggins-Puhalla, MDPittsburgh, PA 152131326251299
- Ashwin SomasundaramPittsburgh, PA 152131356784763
Common questions
What is Ariel Lopez-Chavez, M.D., M.S.'s NPI number?
Ariel Lopez-Chavez, M.D., M.S.'s National Provider Identifier (NPI) is 1871786913, issued on Aug 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ariel Lopez-Chavez, M.D., M.S. located?
The NPPES record lists a practice address at 314 E North Ave, Pittsburgh, PA, 15212. Phone: (412) 325-5700. Providers update this record themselves, so call before visiting.
How can I verify Ariel Lopez-Chavez, M.D., M.S.'s license?
NPPES lists Pennsylvania license number MD435376, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ariel Lopez-Chavez, M.D., M.S. prescribe under Medicare Part D?
In 2024, Ariel Lopez-Chavez, M.D., M.S. had 92 Medicare Part D claims for 34 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Ariel Lopez-Chavez, M.D., M.S.'s MIPS final score?
The 2023 MIPS final score is 85.6 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.