Douglas Rudolph Farrell
Nephrology Physician · New York, NY
Douglas Rudolph Farrell is a nephrology physician with a practice address in New York, New York, and NPI 1184186934, issued on Apr 2, 2019. Check the license (New York 317547, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Douglas Rudolph Farrell
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 317547 NY
Self-reported in NPPES; status is on the state search - Practice location
- 5 E 98TH St FL 12, New York, NY 10029
- Phone
- (212) 659-8086
- Enumerated
- Apr 2, 2019
- Record last updated
- Sep 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20251023000820); accepts Medicare assignment
- Medical or professional school
- Rutgers, Robert Woood Johnson Medical School, 2019
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,049 in New York → Look up another NPI →
Also registered at 5 E 98TH St FL 12
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jesse BrooksPhysician Assistant1922899624
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- Veronica Delaney, MDNephrology Physician1043210297
- Joseph Dinorcia, M.D.Transplant Surgery Physician1740503911
- Ghideon Ezaz, M.D.Gastroenterology Physician1689963332
Verify Douglas Rudolph Farrell 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 317547Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average nephrology physician in 2024
154 Medicare Part D claims for 42 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Nifedipine Er17 claims
- Atorvastatin Calcium13 claims
- Amlodipine Besylate11 claims
- Furosemide11 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.
Bills Medicare through one group practice
- Icahn School OF Medicine AT Mount SinaiNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Douglas Rudolph Farrell among 1,049 nephrology physician records in New York
Douglas Rudolph Farrell is one of 1,049 nephrology physician records with a practice address in New York. 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 2019, is newer than 94% of them.
- NPI issued2019 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2019 · median 1999 among the 764 with a school on file
- Record last updated2025 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in New York
There are 1,049 nephrology physician records in New York.
All 1,049 in New York → Every provider in New York → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Veronica Delaney, MDNew York, NY 100291043210297
- Jonathan Himmelfarb, M.D.New York, NY 100291275533903
- Lewis Kaufman, MDNew York, NY 100291811915630
- Jeffrey Olin, D.O.New York, NY 100291144258609
- Rajeev Rohatgi, MDNew York, NY 100291932128949
- Michael Ross, MDNew York, NY 100291851321368
- Bernd Schroppel, MDNew York, NY 100291689692469
- Martin Sedlacek, M.D.New York, NY 100291063455277
Common questions
What is Douglas Rudolph Farrell's NPI number?
Douglas Rudolph Farrell's National Provider Identifier (NPI) is 1184186934, issued on Apr 2, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Rudolph Farrell located?
The NPPES record lists a practice address at 5 E 98TH St FL 12, New York, NY, 10029. Phone: (212) 659-8086. Providers update this record themselves, so call before visiting.
How can I verify Douglas Rudolph Farrell's license?
NPPES lists New York license number 317547, 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 Douglas Rudolph Farrell prescribe under Medicare Part D?
In 2024, Douglas Rudolph Farrell had 154 Medicare Part D claims for 42 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.