Richard O. Nelson, MD
Internal Medicine Physician · Warren, NJ
Richard O. Nelson, MD is an internal medicine physician with a practice address in Warren, New Jersey, and NPI 1841287620, issued on Oct 5, 2005. Check the license (New Jersey MA48833, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Richard O. Nelson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MA48833 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 34 Mountain Blvd, Warren, NJ 07059
- Phone
- (908) 769-0100
- Enumerated
- Oct 5, 2005
- Record last updated
- Jul 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (908) 769-2512
- Medicare enrollment
- Enrolled (PECOS I20050623000845); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1985
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 34 Mountain Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Richard O. Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license MA48833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,691 Medicare Part D claims for 667 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 22 claims were for opioids.
Most prescribed
- Atorvastatin Calcium668 claims
- Amlodipine Besylate626 claims
- Losartan Potassium285 claims
- Metoprolol Succinate254 claims
- Rosuvastatin Calcium201 claims
- Levothyroxine Sodium186 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
- Summit Medical Group PABerkeley Heights, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Richard O. Nelson among 4,632 internal medicine physician records in New Jersey
Richard O. Nelson, MD is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% 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 · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1985 · median 2000 among the 3,132 with a school on file
- Record last updated2019 · 63% 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 Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 internal medicine physician records list a practice address in Warren
They are 27 of the 391 NPPES records with a practice address in Warren, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Warren → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vinod Abraham, MDWarren, NJ 070591992793418
- Poonam Alaigh, MDWarren, NJ 070591326142860
- Douglas Ashinsky, MDWarren, NJ 070591932175361
- Stephen Bobella, M.D.Warren, NJ 070591992807556
- Lisa Brodkin, M.D.Warren, NJ 070591972561926
- Maurice Ferrante, M.D.Warren, NJ 070591437154192
- Thomas Kloos, MDWarren, NJ 070591295833556
- Richard Lesko, MDWarren, NJ 070591609865955
Common questions
What is Richard O. Nelson, MD's NPI number?
Richard O. Nelson, MD's National Provider Identifier (NPI) is 1841287620, issued on Oct 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Richard O. Nelson, MD located?
The NPPES record lists a practice address at 34 Mountain Blvd, Warren, NJ, 07059. Phone: (908) 769-0100. Providers update this record themselves, so call before visiting.
How can I verify Richard O. Nelson, MD's license?
NPPES lists New Jersey license number MA48833, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Richard O. Nelson, MD prescribe under Medicare Part D?
In 2024, Richard O. Nelson, MD had 6,691 Medicare Part D claims for 667 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.