Paul Andrew Chang, MD
Internal Medicine Physician · Ontario, OH
Paul Andrew Chang, MD is an internal medicine physician with a practice address in Ontario, Ohio, and NPI 1245217496, issued on Dec 29, 2005. Check the license (Ohio 35078250C, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Paul Andrew Chang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35078250C OH
Self-reported in NPPES; status is on the state search - Practice location
- 2558 W 4TH St, Ontario, OH 44906
- Phone
- (419) 529-4100
- Enumerated
- Dec 29, 2005
- Record last updated
- Jan 6, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (419) 529-8700
- Medicaid ID
- 2192694 OH
- Medicare enrollment
- Enrolled (PECOS I20050713000975); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Also registered at 2558 W 4TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Irene Lin, DDSPediatric Dentistry1982765640
Verify Paul Andrew Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35078250CCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,079 Medicare Part D claims for 168 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate140 claims
- Losartan Potassium136 claims
- Omeprazole132 claims
- Lisinopril131 claims
- Metoprolol Succinate108 claims
- Fluticasone Propionate99 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.
Paul Andrew Chang among 5,277 internal medicine physician records in Ohio
Paul Andrew Chang, MD is one of 5,277 internal medicine physician records with a practice address in Ohio. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1996 · median 2006 among the 3,414 with a school on file
- Record last updated2014 · 58% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 internal medicine physician records list a practice address in Ontario
They are 7 of the 310 NPPES records with a practice address in Ontario, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Ontario → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vamsee Amirneni, MDOntario, OH 449061346400058
- William Ballinger, M.D.Mansfield, OH 449061730167602
- Mustafa Garbadawala, M.D.Mansfield, OH 449061548294127
- Gregory Gosky, MDMansfield, OH 449061588741151
- Eric Haus, D.O.Mansfield, OH 449061114128311
- Babbaljeet Kaur, MDMansfield, OH 449061093167959
- James Mooney, MDMansfield, OH 449061740292853
- John Nirmalnath, M.D.Ontario, OH 449061225210651
Common questions
What is Paul Andrew Chang, MD's NPI number?
Paul Andrew Chang, MD's National Provider Identifier (NPI) is 1245217496, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Paul Andrew Chang, MD located?
The NPPES record lists a practice address at 2558 W 4TH St, Ontario, OH, 44906. Phone: (419) 529-4100. Providers update this record themselves, so call before visiting.
How can I verify Paul Andrew Chang, MD's license?
NPPES lists Ohio license number 35078250C, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Paul Andrew Chang, MD prescribe under Medicare Part D?
In 2024, Paul Andrew Chang, MD had 3,079 Medicare Part D claims for 168 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.