John Tso, D.O.
Internal Medicine Physician · McKeesport, PA
John Tso, D.O. is an internal medicine physician with a practice address in McKeesport, Pennsylvania, and NPI 1366829764, issued on May 5, 2015. Check the license (Pennsylvania OS019428, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- John Tso
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS019428 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Fifth Ave, McKeesport, PA 15132
- Phone
- (412) 664-2782
- Enumerated
- May 5, 2015
- Record last updated
- Mar 27, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (412) 664-2784
- Medicare enrollment
- Enrolled (PECOS I20220221001319); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2015
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 1500 Fifth Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bhawna AgarwalInternal Medicine Physician1699157966
- Oluremi Ajala, M.D.Internal Medicine Physician1629412325
- April Andreen, PHARMDPharmacist1053836221
- Joud Arnouk, M.DInternal Medicine Physician1306295456
- Payam Arya, MDAnatomic Pathology & Clinical Pathology Physician1922237429
- Oday Awad, M.D.Internal Medicine Physician1447633730
Verify John Tso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS019428Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average internal medicine physician in 2024
470 Medicare Part D claims for 164 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 47 claims were for opioids.
Most prescribed
- Pantoprazole Sodium26 claims
- Atorvastatin Calcium25 claims
- Oxycodone Hcl24 claims
- Amoxicillin-Clavulanate Potass21 claims
- Prednisone18 claims
- Amlodipine Besylate15 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.
Industry payments in 2024: $29.14
1 payment: food and beverage; the largest payer was Heartflow, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- South Sound Inpatient Physicians PLLCTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Tso among 7,300 internal medicine physician records in Pennsylvania
John Tso, D.O. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 62% of them.
- NPI issued2015 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2015 · median 2008 among the 4,208 with a school on file
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 internal medicine physician records list a practice address in McKeesport
They are 35 of the 1,096 NPPES records with a practice address in McKeesport, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in McKeesport → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Oluremi Ajala, M.D.McKeesport, PA 151321629412325
- Rudolph Antoncic, MDMcKeesport, PA 151321871667907
- Jonathan Arnold, MDMcKeesport, PA 151321528486313
- Benjamin Bandoh, M.DMcKeesport, PA 151321497199285
- Jason Bierenbaum, MDMcKeesport, PA 151321609098052
- Luis Corral Guerrero, M.D.McKeesport, PA 151321164835195
- Reena KarnikMcKeesport, PA 151321851593503
- Senta Kastler, M.D.McKeesport, PA 151321073751038
Common questions
What is John Tso, D.O.'s NPI number?
John Tso, D.O.'s National Provider Identifier (NPI) is 1366829764, issued on May 5, 2015. An NPI identifies a provider in billing; it is not a license.
Where is John Tso, D.O. located?
The NPPES record lists a practice address at 1500 Fifth Ave, McKeesport, PA, 15132. Phone: (412) 664-2782. Providers update this record themselves, so call before visiting.
How can I verify John Tso, D.O.'s license?
NPPES lists Pennsylvania license number OS019428, 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 John Tso, D.O. prescribe under Medicare Part D?
In 2024, John Tso, D.O. had 470 Medicare Part D claims for 164 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.