John Carleton Nelson, M.D.
Hematology (Internal Medicine) Physician · Hawthorne, NY
John Carleton Nelson, M.D. is a hematology (internal medicine) physician with a practice address in Hawthorne, New York, and NPI 1790748192, issued on Apr 8, 2006. Check the license (New York 128109, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John Carleton Nelson
- Credential
- M.D.
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 128109 NY
Self-reported in NPPES; status is on the state search - Practice location
- 19 Bradhurst Ave, Hawthorne, NY 10532
- Phone
- (914) 493-8375
- Enumerated
- Apr 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (914) 347-1832
- Medicaid ID
- 00420677 NY
- Medicare enrollment
- Enrolled (PECOS I20040518000845); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1971
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 161 in New York → Look up another NPI →
Also registered at 19 Bradhurst Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gifty Adjei-Dugbatey, FNPPrimary Care Nurse Practitioner1003635095
- Arlene Adler, PHDPsychologist1386631745
- Stephen Adler, MDNephrology Physician1164421020
- Chhaya Aggarwal-Gupta, MDAdvanced Heart Failure and Transplant Cardiology Physician1518124684
- Ingrid Allard, MDPediatrics Physician1336136027
- Robin Altman, MDPediatrics Physician1295736833
Verify John Carleton Nelson 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 128109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
248 Medicare Part D claims for 67 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims. 17 claims were for opioids.
Most prescribed
- Eliquis62 claims
- Xarelto47 claims
- Hydroxyurea29 claims
- Imbruvica12 claims
- Prednisone11 claims
- Warfarin Sodium11 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
- Westchester Medical Center Advanced Physician Services PCValhalla, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Carleton Nelson among 161 hematology (internal medicine) physician records in New York
John Carleton Nelson, M.D. is one of 161 hematology (internal medicine) physician records with a practice address in New York. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 44% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1971 · median 2001 among the 92 with a school on file
- Record last updated2007 · 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 207RH0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in New York
There are 161 hematology (internal medicine) physician records in New York.
All 161 in New York → Every provider in Hawthorne → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Beverly Deren, MDMount Kisco, NY 105491467405613
- Thomas Lester, MDMount Kisco, NY 105491669554366
- Abraham Mittelman, MDPurchase, NY 105771013980903
- Thomas Muhlfelder, M.D.Bronx, NY 104681134224132
- Ellen Friedman, MDBronx, NY 104671215026539
- Shirley Levine, MDBronx, NY 104671891885620
- Ira Sussman, MDBronx, NY 104671205911088
- Joan Uehlinger, MDBronx, NY 104671295815793
Common questions
What is John Carleton Nelson, M.D.'s NPI number?
John Carleton Nelson, M.D.'s National Provider Identifier (NPI) is 1790748192, issued on Apr 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Carleton Nelson, M.D. located?
The NPPES record lists a practice address at 19 Bradhurst Ave, Hawthorne, NY, 10532. Phone: (914) 493-8375. Providers update this record themselves, so call before visiting.
How can I verify John Carleton Nelson, M.D.'s license?
NPPES lists New York license number 128109, 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 John Carleton Nelson, M.D. prescribe under Medicare Part D?
In 2024, John Carleton Nelson, M.D. had 248 Medicare Part D claims for 67 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.