Robert A. Chang, MD
Internal Medicine Physician · Mount Clemens, MI
Robert A. Chang, MD is an internal medicine physician with a practice address in Mount Clemens, Michigan, and NPI 1093712093, issued on Jul 5, 2005. Check the license (Michigan 4301054727, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Robert A. Chang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301054727 MI
Self-reported in NPPES; status is on the state search - Practice location
- 133 S Main St, Mount Clemens, MI 48043
- Phone
- (586) 468-1600
- Enumerated
- Jul 5, 2005
- Record last updated
- Dec 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (586) 465-0329
- Medicaid ID
- 3476505 MI
- Medicare enrollment
- Enrolled (PECOS I20050304000626); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 133 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nikhil Ambulgekar, M.D.Cardiovascular Disease Physician1497074264
- Christopher Davis, PA-CPhysician Assistant1962637686
- Arsenio De Leon, M.D.Pulmonary Disease Physician1689737041
- Tara Deryavoush, D.OInternal Medicine Physician1851718092
- Adrienne Doerr, P.A.Physician Assistant1568652410
- Jerome Finkel, M.D.Internal Medicine Physician1942206735
Verify Robert A. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301054727Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average internal medicine physician in 2024
11,614 Medicare Part D claims for 642 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 488 claims were for opioids.
Most prescribed
- Atorvastatin Calcium700 claims
- Levothyroxine Sodium671 claims
- Losartan Potassium544 claims
- Amlodipine Besylate431 claims
- Metoprolol Succinate383 claims
- Lisinopril293 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: $690.72
34 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. 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 2 group practices
- Henry Ford Macomb Hospital CorporationClinton Township, MI
- Henry Ford Physician PartnersMount Clemens, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert A. Chang among 5,735 internal medicine physician records in Michigan
Robert A. Chang, MD is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% 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, 90% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1986 · median 2006 among the 3,564 with a school on file
- Record last updated2020 · 54% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 internal medicine physician records list a practice address in Mount Clemens
They are 39 of the 858 NPPES records with a practice address in Mount Clemens, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Mount Clemens → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Youssef Abbiss, D.O.Mount Clemens, MI 480431982991881
- Ernesto Bedia, M.D.Mount Clemens, MI 480431346301645
- Elizabeth Brooks, D.O.Mount Clemens, MI 480431184852204
- Tara Deryavoush, D.OMount Clemens, MI 480431851718092
- Jerome Finkel, M.D.Mount Clemens, MI 480431942206735
- Pasquale Iaderosa, MDMount Clemens, MI 480431962409094
- Gurdeep Kaur, M.D.Mount Clemens, MI 480431487624235
- Vasudevarao Mandava, M.DMount Clemens, MI 480431073501821
Common questions
What is Robert A. Chang, MD's NPI number?
Robert A. Chang, MD's National Provider Identifier (NPI) is 1093712093, issued on Jul 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert A. Chang, MD located?
The NPPES record lists a practice address at 133 S Main St, Mount Clemens, MI, 48043. Phone: (586) 468-1600. Providers update this record themselves, so call before visiting.
How can I verify Robert A. Chang, MD's license?
NPPES lists Michigan license number 4301054727, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert A. Chang, MD prescribe under Medicare Part D?
In 2024, Robert A. Chang, MD had 11,614 Medicare Part D claims for 642 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.