John Charles Siano, MD
Internal Medicine Physician · Lansing, MI
John Charles Siano, MD is an internal medicine physician with a practice address in Lansing, Michigan, and NPI 1689628067, issued on May 20, 2006. Check the license (Michigan 430051450, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John Charles Siano
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 430051450 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1200 E Michigan Ave, Lansing, MI 48912
- Phone
- (517) 484-4033
- Enumerated
- May 20, 2006
- Record last updated
- Apr 23, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (517) 484-2701
- Medicaid ID
- 1689628067 MI
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 1200 E Michigan Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Charles Siano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 430051450Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average internal medicine physician in 2024
8,028 Medicare Part D claims for 646 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 450 claims were for opioids.
Most prescribed
- Atorvastatin Calcium419 claims
- Levothyroxine Sodium382 claims
- Lisinopril265 claims
- Amlodipine Besylate257 claims
- Losartan Potassium242 claims
- Ozempic219 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: $1,746.10
90 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer 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.
John Charles Siano among 5,735 internal medicine physician records in Michigan
John Charles Siano, 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2015 · 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).
135 internal medicine physician records list a practice address in Lansing
They are 135 of the 5,276 NPPES records with a practice address in Lansing, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Lansing → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Cynthia Boynton, M.D.Lansing, MI 489121013969930
- James Fletcher, MD, DPMLansing, MI 489121346214467
- Habtamu Handro, M.D.Lansing, MI 489121558316000
- Fred Isaacs, M.D.Lansing, MI 489121487609665
- Carol Lyon, M.D.Lansing, MI 489121982659090
- Harry McCoy, M.D.Lansing, MI 489121003850702
Common questions
What is John Charles Siano, MD's NPI number?
John Charles Siano, MD's National Provider Identifier (NPI) is 1689628067, issued on May 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Charles Siano, MD located?
The NPPES record lists a practice address at 1200 E Michigan Ave, Lansing, MI, 48912. Phone: (517) 484-4033. Providers update this record themselves, so call before visiting.
How can I verify John Charles Siano, MD's license?
NPPES lists Michigan license number 430051450, 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 John Charles Siano, MD prescribe under Medicare Part D?
In 2024, John Charles Siano, MD had 8,028 Medicare Part D claims for 646 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.