Carlos Orval Weiss, MD
Geriatric Medicine (Internal Medicine) Physician · Byron Center, MI
Carlos Orval Weiss, MD is a geriatric medicine (internal medicine) physician with a practice address in Byron Center, Michigan, and NPI 1609880616, issued on Jul 27, 2006. Check the license (Michigan 4301074215, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Carlos Orval Weiss
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 4301074215 MI
Self-reported in NPPES; status is on the state search - Practice location
- 7751 Byron Center Ave SW Ste C, Byron Center, MI 49315
- Phone
- (616) 267-7668
- Enumerated
- Jul 27, 2006
- Record last updated
- Feb 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 184 in Michigan → Look up another NPI →
Also registered at 7751 Byron Center Ave SW Ste C
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katelin Aris, NPGerontology Nurse Practitioner1730748609
- Alison Aubry, NPGerontology Nurse Practitioner1538536966
- Grayson Baker, NPGerontology Nurse Practitioner1144812561
- Michelle Barton, MDInternal Medicine Physician1649765942
- Cynthia Betterly, DNPGerontology Nurse Practitioner1508254426
- Carly Boss, AGPCNPGerontology Nurse Practitioner1487318606
Verify Carlos Orval Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301074215Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
2,304 Medicare Part D claims for 242 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 110 claims were for opioids.
Most prescribed
- Levothyroxine Sodium91 claims
- Omeprazole80 claims
- Atorvastatin Calcium79 claims
- Sertraline Hcl78 claims
- Gabapentin75 claims
- Potassium Chloride75 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.
Carlos Orval Weiss among 184 geriatric medicine (internal medicine) physician records in Michigan
Carlos Orval Weiss, MD is one of 184 geriatric medicine (internal medicine) physician records with a practice address in Michigan. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 43% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 54% of these records are
- Record last updated2021 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 geriatric medicine (internal medicine) physician records list a practice address in Byron Center
They are 5 of the 317 NPPES records with a practice address in Byron Center, and 184 geriatric medicine (internal medicine) physician records in Michigan.
All 184 in Michigan → Every provider in Byron Center → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Iris Boettcher, MDByron Center, MI 493151003863226
- Guibin Li, M.D.Byron Center, MI 493151578733325
- Vera Nattler, MDByron Center, MI 493151821731118
- Amy Sanborn, DOByron Center, MI 493151861752164
- Steven Hamberg, MDHolland, MI 494231447207709
- Sana ChamsJackson, MI 492021730531146
- Marvin Fields, MDJackson, MI 492011932157476
- Elena Gupta, MDJackson, MI 492011598946782
Common questions
What is Carlos Orval Weiss, MD's NPI number?
Carlos Orval Weiss, MD's National Provider Identifier (NPI) is 1609880616, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Carlos Orval Weiss, MD located?
The NPPES record lists a practice address at 7751 Byron Center Ave SW Ste C, Byron Center, MI, 49315. Phone: (616) 267-7668. Providers update this record themselves, so call before visiting.
How can I verify Carlos Orval Weiss, MD's license?
NPPES lists Michigan license number 4301074215, 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 Carlos Orval Weiss, MD prescribe under Medicare Part D?
In 2024, Carlos Orval Weiss, MD had 2,304 Medicare Part D claims for 242 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.