Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Robert D. Lang, MD

Individual provider Pediatrics Physician · NPI 1871597377

Robert D. Lang, MD practises Internal Medicine in Grand Rapids, Michigan. Graduated from University of Minnesota Medical School in 1993, 33 years ago. Practices with Grand Valley Medical Specialists PLC, a 19-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
33
Trained at
University of Minnesota Medical School
Licensed in
MI
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1000 E Paris Ave SE Ste 100
Grand Rapids, MI 49546
Phone: (616) 459-3158
Fax: (616) 988-0071
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301061594 (MI)
Pediatrics Physician Taxonomy 208000000X · Licence 4301061594 (MI)

Record details

NPI number1871597377
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2005
Last updated in NPPESNovember 16, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1993 (33 years in practice)
Group practice Grand Valley Medical Specialists Plc — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients97
Services billed 7,806 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $1,062 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Spectrum Health Hospital · Grand Rapids, MI · listed as Spectrum Health Hospital
  • Mary Free Bed At Home, Llc Home health agency · Grand Rapids, MI
  • Corewell Health Reed City Hospital Hospital · Reed City, MI

Colleagues at Grand Valley Medical Specialists PLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 19 clinicians in the practice; 12 are shown here.

Other providers in Grand Rapids