Ronald C. Fagan, M.D.
Internal Medicine Physician · Farmingdale, NY
Ronald C. Fagan, M.D. is an internal medicine physician with a practice address in Farmingdale, New York, and NPI 1972524486, issued on Jul 21, 2006. Check the license (New York 178331, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ronald C. Fagan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 178331 NY
Self-reported in NPPES; status is on the state search - Practice location
- 4900 Hempstead Tpke, Farmingdale, NY 11735
- Phone
- (516) 752-7000
- Enumerated
- Jul 21, 2006
- Record last updated
- May 6, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (516) 586-8644
- Medicaid IDs
- 01291969 NY
03367237 NY - Medicare enrollment
- Enrolled (PECOS I20070713000604); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 4900 Hempstead Tpke
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aimee Goodwin, RPA-CSurgical Physician Assistant1356303259
- Orlando Suarez, M.D.Internal Medicine Physician1366773319
Verify Ronald C. Fagan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 178331Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average internal medicine physician in 2024
3,640 Medicare Part D claims for 396 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium274 claims
- Levothyroxine Sodium156 claims
- Omeprazole154 claims
- Famotidine119 claims
- Metformin Hcl100 claims
- Amlodipine Besylate97 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: $2,434.76
95 payments; by number, the most common kind was food and beverage; the largest payer was Phathom Pharmaceuticals, 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.
Bills Medicare through one group practice
- Ronald C Fagan MD PCFarmingdale, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald C. Fagan among 12,067 internal medicine physician records in New York
Ronald C. Fagan, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 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 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1989 · median 2002 among the 7,221 with a school on file
- Record last updated2014 · 61% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 internal medicine physician records list a practice address in Farmingdale
They are 10 of the 809 NPPES records with a practice address in Farmingdale, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Farmingdale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Khondokar HassanFarmingdale, NY 117351427807841
- Azmatullah Hussaini, M.D.Farmingdale, NY 117351366725335
- Nahid KhanFarmingdale, NY 117351811768658
- Dominic Posillico, M.D.Farmingdale, NY 117351730113895
- Wendy Rogart, M.D.Farmiongdale, NY 117351326130964
- Fazle Showon, DOFarmingdale, NY 117351184290892
- Rebecca Stalek, MDFarmingdale, NY 117351194935056
- Orlando Suarez, M.D.Farmingdale, NY 117351366773319
Common questions
What is Ronald C. Fagan, M.D.'s NPI number?
Ronald C. Fagan, M.D.'s National Provider Identifier (NPI) is 1972524486, issued on Jul 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald C. Fagan, M.D. located?
The NPPES record lists a practice address at 4900 Hempstead Tpke, Farmingdale, NY, 11735. Phone: (516) 752-7000. Providers update this record themselves, so call before visiting.
How can I verify Ronald C. Fagan, M.D.'s license?
NPPES lists New York license number 178331, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ronald C. Fagan, M.D. prescribe under Medicare Part D?
In 2024, Ronald C. Fagan, M.D. had 3,640 Medicare Part D claims for 396 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.