Ralph G. Ryan, M.D.
Cardiovascular Disease Physician · Oak Park, IL
Ralph G. Ryan, M.D. is a cardiovascular disease physician with a practice address in Oak Park, Illinois, and NPI 1548254972, issued on Aug 31, 2005. Check the license (Illinois 036054943, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ralph G. Ryan
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 036054943 IL
4301043406 MI
Self-reported in NPPES; status is on the state search - Practice location
- 14 Lake St, Oak Park, IL 60302
- Phone
- (708) 383-0113
- Enumerated
- Aug 31, 2005
- Record last updated
- Jan 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (708) 383-9911
- Medicaid ID
- 1632944 MI
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,073 in Illinois → Look up another NPI →
Also registered at 14 Lake St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Morgan Beatty, MD, MPHFamily Medicine Physician1811488679
- Jennifer Bello Kottenstette, MDFamily Medicine Physician1679733372
- Ashley BoumgardenFamily Nurse Practitioner1912751975
Verify Ralph G. Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036054943Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
113 Medicare Part D claims for 20 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Jardiance19 claims
- Spironolactone18 claims
- Rosuvastatin Calcium17 claims
- Entresto16 claims
- Metoprolol Succinate15 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.
Ralph G. Ryan among 1,073 cardiovascular disease physician records in Illinois
Ralph G. Ryan, M.D. is one of 1,073 cardiovascular disease physician records with a practice address in Illinois. 85% 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, 92% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2020 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Illinois
There are 1,073 cardiovascular disease physician records in Illinois.
All 1,073 in Illinois → Every provider in Oak Park → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Mark Balek, M.D.Oak Park, IL 603021952557316
- Farid Gholitabar, M.D.Oak Park, IL 603021801278650
- Katherine Heretis, M.D.Oak Park, IL 603021710151550
- Nirali Patel, MD, MBAOak Park, IL 603021205576154
- Shannon Li, MDOak Park, IL 603041164957064
- William Millman, M.D.River Forest, IL 603051689663429
- David Cusick, M.D.Berwyn, IL 604021093779647
- Donald Dixon, M.D.Berwyn, IL 604021134183221
Common questions
What is Ralph G. Ryan, M.D.'s NPI number?
Ralph G. Ryan, M.D.'s National Provider Identifier (NPI) is 1548254972, issued on Aug 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ralph G. Ryan, M.D. located?
The NPPES record lists a practice address at 14 Lake St, Oak Park, IL, 60302. Phone: (708) 383-0113. Providers update this record themselves, so call before visiting.
How can I verify Ralph G. Ryan, M.D.'s license?
NPPES lists Illinois license number 036054943, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ralph G. Ryan, M.D. prescribe under Medicare Part D?
In 2024, Ralph G. Ryan, M.D. had 113 Medicare Part D claims for 20 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.