Physician Profile
Unclaimed ProfileAbout KOSHAR
Mark Koshar, M.D. practises internal medicine in Easton, PA. Mark is a 1974 graduate of Rutgers New Jersey Medical School.
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
Common questions
What does Dr. Koshar specialise in?
Dr. Koshar is an internal medicine in Easton, PA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Koshar located?
Dr. Koshar is listed at 3735 NAZARETH RD SUITE 301, Easton, PA 18045. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Koshar's phone number?
The number on file is (610) 829-2200. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Koshar?
Dr. Koshar's National Provider Identifier is 1538161963. 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. Koshar go to medical school?
Dr. Koshar attended Rutgers New Jersey Medical School, graduating in 1974. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Koshar have?
Dr. Koshar has 52 years experience. Calculated from a graduation year of 1974, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Koshar do most often?
According to Medicare billing data, Dr. Koshar provides treatments such as influenza vaccine split virus, preservative free and sarscv2 vac 30mcg trs-suc im, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Koshar's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Koshar. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (610) 829-2200
- Email not available
Practice Locations
3735 NAZARETH RD SUITE 301
Easton, PA 18045
Procedures Most Often Billed to Medicare
5,846 services · 1,911 patients · 17 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
237 |
| Sarscv2 vac 30mcg trs-suc im | Treatment | 91320 |
130 |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
130 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
97 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
53 |
| Injection, denosumab, 1 mg | Drug given | J0897 |
3,540 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
592 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
351 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
311 |
| Administration of influenza virus vaccine | Billing code | G0008 |
237 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 6
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
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 — 31 related providers in 4 groups
Other internal medicines in Easton 7
Same specialty, same city.
Trained at Rutgers New Jersey Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1974 at Rutgers New Jersey Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine split virus, preservative free 8
Providers in PA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.