Mark Gelfand, MD
Internal Medicine Physician · Brooklyn, NY
Mark Gelfand, MD is an internal medicine physician with a practice address in Brooklyn, New York, and NPI 1801849658, issued on May 19, 2006. Check the license (New York 211150, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mark Gelfand
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 211150 NY
Self-reported in NPPES; status is on the state search - Practice location
- 415 Oceanview Ave, Brooklyn, NY 11235
- Phone
- (718) 934-4842
- Enumerated
- May 19, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (718) 616-0165
- Medicaid ID
- 01892906 NY
- Medicare enrollment
- Enrolled (PECOS I20060428000117); 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 415 Oceanview Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Teplitsky, MDInternal Medicine Physician1588675268
Verify Mark Gelfand 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 211150Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.9 times the Medicare Part D claims of the average internal medicine physician in 2024
21,800 Medicare Part D claims for 646 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 37 claims were for opioids.
Most prescribed
- Amlodipine Besylate1,303 claims
- Atorvastatin Calcium1,085 claims
- Rosuvastatin Calcium989 claims
- Metoprolol Succinate839 claims
- Levothyroxine Sodium670 claims
- Losartan Potassium659 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.
The MIPS final score for 2023 (Medicare payment program): 27.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $619.56
30 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Mark Gelfand among 12,067 internal medicine physician records in New York
Mark Gelfand, 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 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
- Graduated1986 · median 2002 among the 7,221 with a school on file
- Record last updated2026 · 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).
1,497 internal medicine physician records list a practice address in Brooklyn
They are 1,497 of the 64,057 NPPES records with a practice address in Brooklyn, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Brooklyn → Internal Medicine Physician nationwide →
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Common questions
What is Mark Gelfand, MD's NPI number?
Mark Gelfand, MD's National Provider Identifier (NPI) is 1801849658, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Gelfand, MD located?
The NPPES record lists a practice address at 415 Oceanview Ave, Brooklyn, NY, 11235. Phone: (718) 934-4842. Providers update this record themselves, so call before visiting.
How can I verify Mark Gelfand, MD's license?
NPPES lists New York license number 211150, 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 Mark Gelfand, MD prescribe under Medicare Part D?
In 2024, Mark Gelfand, MD had 21,800 Medicare Part D claims for 646 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Gelfand, MD's MIPS final score?
The 2023 MIPS final score is 27.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.