Ronald Blum, MD
Internal Medicine Physician · New York, NY
Ronald Blum, MD is an internal medicine physician with a practice address in New York, New York, and NPI 1336122407, issued on Nov 22, 2005. Check the license (New York 139346, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ronald Blum
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 139346 NY
Self-reported in NPPES; status is on the state search - Practice location
- 10 Union SQ E, New York, NY 10003
- Phone
- (212) 844-8283
- Enumerated
- Nov 22, 2005
- Record last updated
- Nov 28, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 00423189 NY
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 10 Union SQ E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frida Abramov, PAPhysician Assistant1083833636
- Christine Akoh, MD, PHDDermatology Physician1487238184
- Akash Alexander, PHARM.D., BCPS, CDEAmbulatory Care Pharmacist1497921506
- Shavon Alexander, MS, RDN, CDNRegistered Dietitian1396681847
- Julia Alishayev, PA-CPhysician Assistant1710394358
- Richard Amerling, MDInternal Medicine Physician1437130317
Verify Ronald Blum 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 139346Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $9,150.00
3 payments; by number, the most common kind was consulting fee; the largest payer was Merck Sharp & Dohme LLC. 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.
Ronald Blum among 12,067 internal medicine physician records in New York
Ronald Blum, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2012 · 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).
2,434 internal medicine physician records list a practice address in New York
They are 2,434 of the 98,468 NPPES records with a practice address in New York, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in New York → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard Amerling, MDNew York, NY 100031437130317
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- Barbara Cheung, MDNew York, NY 100031023006020
- Alan Dubrow, MDNew York, NY 100031427031830
- Jane Falkenstein, MDNew York, NY 100031083604227
- Michael Felsen, MDNew York, NY 100031891784286
- Jonathan Field, MDNew York, NY 100031578547006
- Donna Finkelstein, MDNew York, NY 100031235129339
Common questions
What is Ronald Blum, MD's NPI number?
Ronald Blum, MD's National Provider Identifier (NPI) is 1336122407, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Blum, MD located?
The NPPES record lists a practice address at 10 Union SQ E, New York, NY, 10003. Phone: (212) 844-8283. Providers update this record themselves, so call before visiting.
How can I verify Ronald Blum, MD's license?
NPPES lists New York license number 139346, 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.
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.