Provider Profile
Mark Grzesiak, RPAC
Unclaimed ProfileAbout Mark Grzesiak
Mark Grzesiak, RPAC is a physician assistant practicing in Mineola, NY. According to Medicare claims data, Mark cared for 25 Medicare patients across 31 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1376717272.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (516) 663-8312
- Email not available
Practice Locations
259 1ST ST
Mineola, NY 11501
Procedures Most Often Billed to Medicare
31 services · 25 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
31 | Less often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other physician assistants at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 19 related providers in 3 groups
Other physician assistants in Mineola 3
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Mark Grzesiak specialize in?
Mark Grzesiak is a physician assistant in Mineola, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Mark Grzesiak located?
Mark Grzesiak is listed at 259 1St St, Mineola, NY 11501. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mark Grzesiak's phone number?
The number on file is (516) 663-8312. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark Grzesiak's NPI number?
Mark Grzesiak's National Provider Identifier is 1376717272. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Mark Grzesiak train?
Mark Grzesiak attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark Grzesiak been practicing?
Mark Grzesiak has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Mark Grzesiak do most often?
According to Medicare billing data, Mark Grzesiak the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark Grzesiak confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark Grzesiak. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.