Physician Profile
Unclaimed ProfileAbout HOSAK
Mark John Hosak, M.D. practices emergency medicine in Bethlehem, PA. Medicare claims data shows Mark provided 309 services to 293 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (610) 954-4000
- Email not available
Practice Locations
801 OSTRUM ST
Bethlehem, PA 18015
Procedures Most Often Billed to Medicare
309 services · 293 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
160 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
97 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
52 |
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 emergency medicines at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 — 18 related providers in 3 groups
Other emergency medicines in Bethlehem 2
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2011 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Hosak specialize in?
Dr. Hosak is an emergency medicine in Bethlehem, PA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
Where is Dr. Hosak located?
Dr. Hosak is listed at 801 OSTRUM ST, Bethlehem, PA 18015. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Hosak's phone number?
The number on file is (610) 954-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Hosak?
Dr. Hosak's National Provider Identifier is 1871889949. 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 Dr. Hosak go to medical school?
Dr. Hosak attended Other, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Hosak have?
Dr. Hosak has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Hosak do most often?
According to Medicare billing data, Dr. Hosak 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
Is Dr. Hosak's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hosak. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.