Mark Steven Shaffer, MD
Internal Medicine Physician · Bayside, NY
Mark Steven Shaffer, MD is an internal medicine physician with a practice address in Bayside, New York, and NPI 1295836674, issued on Sep 26, 2006. Check the license (New York 136330, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mark Steven Shaffer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 136330 NY
Self-reported in NPPES; status is on the state search - Practice location
- 69-36A 215 Street, Bayside, NY 11364
- Phone
- (718) 279-8787
- Enumerated
- Sep 26, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (718) 279-8993
- Medicaid ID
- 00528969 NY
- Medicare enrollment
- Enrolled (PECOS I20111013000406); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Verify Mark Steven Shaffer 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 136330Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
458 Medicare Part D claims for 44 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium55 claims
- Vitamin D223 claims
- Amlodipine Besylate20 claims
- Valsartan20 claims
- Januvia19 claims
- Allopurinol16 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.
Mark Steven Shaffer among 12,067 internal medicine physician records in New York
Mark Steven Shaffer, 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
- Graduated1976 · median 2002 among the 7,221 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 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).
32 internal medicine physician records list a practice address in Bayside
They are 32 of the 1,478 NPPES records with a practice address in Bayside, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Bayside → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Florentin Abrudescu, MDBayside, NY 113641144284712
- Shamsul Bhuiyan, MDOakland Gardens, NY 113641053645747
- Mark Gersten, MDBayside, NY 113641972589794
- Cristian Harghel, M.D.Bayside, NY 113641114978160
- Rajesh Raina, M.D.Oakland Gardens, NY 113641205934437
- Isabella Bangy, MDFlushing, NY 113651831103407
- Mehmet Cavusoglu, M.D.Douglaston, NY 113631427171248
- Jeffrey Freilich, MDFlushing, NY 113651902833189
Common questions
What is Mark Steven Shaffer, MD's NPI number?
Mark Steven Shaffer, MD's National Provider Identifier (NPI) is 1295836674, issued on Sep 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Steven Shaffer, MD located?
The NPPES record lists a practice address at 69-36A 215 Street, Bayside, NY, 11364. Phone: (718) 279-8787. Providers update this record themselves, so call before visiting.
How can I verify Mark Steven Shaffer, MD's license?
NPPES lists New York license number 136330, 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 Steven Shaffer, MD prescribe under Medicare Part D?
In 2024, Mark Steven Shaffer, MD had 458 Medicare Part D claims for 44 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.