Mikhail Grzhibek, M.D.
Internal Medicine Physician · East Patchogue, NY
Mikhail Grzhibek, M.D. is an internal medicine physician with a practice address in East Patchogue, New York, and NPI 1629033709, issued on Apr 20, 2006. Check the license (New York 239339, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mikhail Grzhibek
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 239339 NY
Self-reported in NPPES; status is on the state search - Practice location
- 285 Sills RD, East Patchogue, NY 11772
- Phone
- (631) 654-1800
- Enumerated
- Apr 20, 2006
- Record last updated
- Apr 13, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (631) 240-9181
- Medicare enrollment
- Enrolled (PECOS I20060922000408); may accept Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 2003
- Entity
- Type 1 · individual
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Verify Mikhail Grzhibek 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 239339Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average internal medicine physician in 2024
5,484 Medicare Part D claims for 351 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 54 claims were for opioids.
Most prescribed
- Atorvastatin Calcium349 claims
- Amlodipine Besylate292 claims
- Levothyroxine Sodium256 claims
- Metoprolol Succinate230 claims
- Alprazolam156 claims
- Escitalopram Oxalate143 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.
Industry payments in 2024: $325.17
11 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Mikhail Grzhibek among 12,067 internal medicine physician records in New York
Mikhail Grzhibek, M.D. 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
- Graduated2003 · median 2002 among the 7,221 with a school on file
- Record last updated2015 · 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).
12 internal medicine physician records list a practice address in East Patchogue
They are 12 of the 451 NPPES records with a practice address in East Patchogue, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in East Patchogue → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Faruq Ahmed, MDE Patchogue, NY 117721225099369
- Nina Alexandrova, MDPatchogue, NY 117721962466250
- Pedro Baez, MDPatchogue, NY 117721841300191
- Rubina Boparai, MDPatchogue, NY 117721225116478
- Robert Chernaik, MDEast Patchogue, NY 117721336253616
- Julia Fahey, M.D.Patchogue, NY 117721730253378
- Fazal Faroqui, DOPatchogue, NY 117721154351823
- Jungyop Kim, MDE Patchogue, NY 117721427064153
Common questions
What is Mikhail Grzhibek, M.D.'s NPI number?
Mikhail Grzhibek, M.D.'s National Provider Identifier (NPI) is 1629033709, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mikhail Grzhibek, M.D. located?
The NPPES record lists a practice address at 285 Sills RD, East Patchogue, NY, 11772. Phone: (631) 654-1800. Providers update this record themselves, so call before visiting.
How can I verify Mikhail Grzhibek, M.D.'s license?
NPPES lists New York license number 239339, 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 Mikhail Grzhibek, M.D. prescribe under Medicare Part D?
In 2024, Mikhail Grzhibek, M.D. had 5,484 Medicare Part D claims for 351 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.